McKinney, Texas Weather Conditions

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Current Conditions

  • 72°
  • Overcast
  • Wind: South 14 mph
  • Humidity: 91%
  • Visibility: 10.0 miles
  • Dew Point: 69°
  • Pressure: 29.87 in. 0

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Next 12 Hours

5  am
8  am
11  am
2  pm
5  pm
Mostly Cloudy
Mostly Cloudy
Overcast
Overcast
Overcast
Overcast
Thunderstorm
T-storms
Thunderstorm
T-storms
70°
70°
74°
75°
75°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Chance of a Thunderstorm
  • High: 75 °
  • Low: 65 °
  • Chance of T-Storms
  • Tuesday
  • Partly Cloudy
  • High: 85 °
  • Low: 70 °
  • Partly Cloudy
  • Wednesday
  • Partly Cloudy
  • High: 86 °
  • Low: 69 °
  • Partly Cloudy
  • Thursday
  • Chance of a Thunderstorm
  • High: 85 °
  • Low: 69 °
  • Chance of T-Storms
  • Friday
  • Chance of a Thunderstorm
  • High: 81 °
  • Low: 68 °
  • Chance of T-Storms

Forecast for McKinney, Texas

Updated: 1:04 AM CDT on January 25, 2015

Flash Flood Watch in effect through this evening...
  • Monday

    Cloudy skies early then heavy thunderstorms developing in the afternoon. A few storms may be severe. High around 75F. Winds SSE at 10 to 20 mph. Chance of rain 80%. 1 to 2 inches of rain expected.

  • Monday Night

    Thunderstorms during the evening, then cloudy skies overnight. A few storms may be severe. Low around 65F. Winds S at 10 to 20 mph. Chance of rain 80%.

  • Tuesday

    Cloudy skies early, followed by partial clearing. A stray severe thunderstorm is possible. High around 85F. Winds S at 10 to 15 mph.

  • Tuesday Night

    Partly cloudy with isolated thunderstorms possible. Low near 70F. Winds SSE at 10 to 15 mph. Chance of rain 30%.

  • Wednesday

    Cloudy skies early, then partly cloudy in the afternoon. High 86F. Winds S at 10 to 15 mph.

  • Wednesday Night

    Clear skies early. Scattered showers and thunderstorms developing later during the night. Low 69F. Winds SSE at 10 to 15 mph. Chance of rain 40%.

  • Thursday

    Cloudy skies during the morning hours followed by scattered showers and thunderstorms in the afternoon. High around 85F. Winds S at 10 to 15 mph. Chance of rain 50%.

  • Thursday Night

    Partly cloudy with late night showers or thunderstorms. Low 69F. Winds SSE at 10 to 15 mph. Chance of rain 60%.

  • Friday

    Scattered thunderstorms. High 81F. Winds S at 10 to 15 mph. Chance of rain 60%.

  • Friday Night

    Variably cloudy with scattered thunderstorms. Low 68F. Winds SSE at 10 to 15 mph. Chance of rain 60%.

  • Saturday

    Variable clouds with scattered thunderstorms. High 81F. Winds S at 10 to 15 mph. Chance of rain 60%.

  • Saturday Night

    Scattered thunderstorms. Low 66F. Winds NW at 5 to 10 mph. Chance of rain 40%.

  • Sunday

    Intervals of clouds and sunshine. High around 80F. Winds N at 5 to 10 mph.

  • Sunday Night

    Mostly clear skies. Low 63F. Winds ENE at 5 to 10 mph.

  • Monday

    Intervals of clouds and sunshine. High 83F. Winds SSE at 5 to 10 mph.

  • Monday Night

    Clear to partly cloudy. Low 66F. Winds SSE at 5 to 10 mph.

  • Tuesday

    Partly cloudy skies. High 86F. Winds SSE at 10 to 15 mph.

  • Tuesday Night

    Clear skies. Low 69F. Winds S at 10 to 15 mph.

  • Wednesday

    Scattered thunderstorms in the morning, with lots of sunshine late. High 87F. Winds S at 10 to 20 mph. Chance of rain 40%.

  • Wednesday Night

    Clear skies during the evening followed by isolated thunderstorms overnight. Low near 70F. Winds SSE at 10 to 15 mph. Chance of rain 30%.

  • Thursday

    Isolated thunderstorms in the morning, then skies turning mostly sunny late. High 86F. Winds SSE at 10 to 15 mph. Chance of rain 30%.

  • Thursday Night

    Mostly clear skies. Low around 70F. Winds SSE at 5 to 10 mph.

Severe Weather Alert Descriptions

 Record Report  Statement as of 02:00 am CDT on May 25, 2015


... Record daily maximum rainfall set at Dallas Fort Worth...

a record rainfall of 3.3 inch(es) was set at Dallas Fort Worth yesterday.
This breaks the old record of 3.28 set in 1908.




Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Encore Wire Campus, McKinney, TX

Updated: 3:54 AM CDT

Temperature: 71.6 °F Dew Point: 70 °F Humidity: 94% Wind: SW at 10.0 mph Pressure: 29.83 in Hourly Precipitation: 0.02 in Heat Index: - Graphs

Location: North Tennessee Street, McKinney, TX

Updated: 4:05 AM CDT

Temperature: 70.9 °F Dew Point: 68 °F Humidity: 92% Wind: North at - Pressure: 29.92 in Hourly Precipitation: - Heat Index: - Graphs

Location: Max Drive, Melissa, TX

Updated: 4:05 AM CDT

Temperature: 70.9 °F Dew Point: 71 °F Humidity: 100% Wind: North at - Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Eldorado Ridge, McKinney, TX

Updated: 4:06 AM CDT

Temperature: 69.3 °F Dew Point: 69 °F Humidity: 98% Wind: SSW at 2.3 mph Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Finch Ave, McKinney, TX

Updated: 4:01 AM CDT

Temperature: 70.7 °F Dew Point: 69 °F Humidity: 94% Wind: South at 1.1 mph Pressure: 29.90 in Hourly Precipitation: - Heat Index: - Graphs

Location: Fairview Oakwood, Fairview, TX

Updated: 4:06 AM CDT

Temperature: 71.1 °F Dew Point: 69 °F Humidity: 94% Wind: Calm Pressure: 29.72 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Heritage Ranch, Fairview, TX

Updated: 4:01 AM CDT

Temperature: 70.8 °F Dew Point: 69 °F Humidity: 94% Wind: SE at 1.0 mph Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: K5BL LIVE WX - El Fenix, McKinney, TX

Updated: 4:06 AM CDT

Temperature: 70.1 °F Dew Point: 68 °F Humidity: 94% Wind: Calm Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Quest Addition, McKinney, TX

Updated: 4:05 AM CDT

Temperature: 70.8 °F Dew Point: 69 °F Humidity: 94% Wind: ESE at 4.0 mph Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Gwendola Drive - Northwood Park, McKinney, TX

Updated: 4:06 AM CDT

Temperature: 70.9 °F Dew Point: 69 °F Humidity: 94% Wind: Calm Pressure: 31.09 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Ranger Estates, Fairview, TX

Updated: 4:06 AM CDT

Temperature: 71.8 °F Dew Point: 70 °F Humidity: 93% Wind: SE at 3.6 mph Pressure: 29.75 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Pembroke Lane, McKinney, TX

Updated: 4:05 AM CDT

Temperature: 71.2 °F Dew Point: 69 °F Humidity: 92% Wind: North at - Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Sandy Glen, McKinney, TX

Updated: 4:04 AM CDT

Temperature: 70.3 °F Dew Point: 66 °F Humidity: 86% Wind: SE at 4.7 mph Pressure: 29.56 in Hourly Precipitation: - Heat Index: - Graphs

Location: Shady Glen - McKinney, McKinney, TX

Updated: 4:03 AM CDT

Temperature: 70.3 °F Dew Point: 68 °F Humidity: 94% Wind: SE at 3.7 mph Pressure: 29.76 in Hourly Precipitation: - Heat Index: - Graphs

Location: JLD Weather Center, McKinney, TX

Updated: 4:06 AM CDT

Temperature: 70.9 °F Dew Point: 69 °F Humidity: 94% Wind: South at 5.0 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Vista of Eldorado, McKinney, TX

Updated: 4:06 AM CDT

Temperature: 69.9 °F Dew Point: 68 °F Humidity: 95% Wind: South at 8.0 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Fawn Hollow, McKinney, TX

Updated: 4:06 AM CDT

Temperature: 70.0 °F Dew Point: 68 °F Humidity: 94% Wind: SSW at 1.9 mph Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Bridlegate, Fairview, TX

Updated: 4:06 AM CDT

Temperature: 70.6 °F Dew Point: 68 °F Humidity: 93% Wind: SSE at 1.0 mph Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Summer Hill Farms, Fairview, TX

Updated: 4:06 AM CDT

Temperature: 71.0 °F Dew Point: - Humidity: 100% Wind: North at - Pressure: - Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Stacy Ridge Estates 2, Allen, TX

Updated: 4:05 AM CDT

Temperature: 71.0 °F Dew Point: 70 °F Humidity: 95% Wind: North at 2.0 mph Pressure: 29.80 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Chanceller Creek, McKinney, TX

Updated: 4:06 AM CDT

Temperature: 70.3 °F Dew Point: 68 °F Humidity: 93% Wind: Calm Pressure: 29.76 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Butterfly Way, Fairview, TX

Updated: 4:05 AM CDT

Temperature: 70.7 °F Dew Point: 71 °F Humidity: 100% Wind: North at - Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Thompson Springs, Fairview, TX

Updated: 4:06 AM CDT

Temperature: 70.6 °F Dew Point: 69 °F Humidity: 96% Wind: Calm Pressure: 29.68 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Lost Creek Ranch, Allen, TX

Updated: 4:06 AM CDT

Temperature: 71.8 °F Dew Point: 70 °F Humidity: 93% Wind: SE at 1.8 mph Pressure: 29.82 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Presidents Point, McKinney, TX

Updated: 4:06 AM CDT

Temperature: 71.2 °F Dew Point: 69 °F Humidity: 93% Wind: ESE at 3.4 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Surrey Lane, McKinney, TX

Updated: 4:05 AM CDT

Temperature: 70.9 °F Dew Point: 71 °F Humidity: 100% Wind: North at - Pressure: 29.73 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Knightsbridge, McKinney, TX

Updated: 4:06 AM CDT

Temperature: 70.2 °F Dew Point: 68 °F Humidity: 91% Wind: Calm Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: New Hope, McKinney, TX

Updated: 3:57 AM CDT

Temperature: 70.9 °F Dew Point: 68 °F Humidity: 89% Wind: SSE at 6.8 mph Pressure: 29.90 in Hourly Precipitation: - Heat Index: - Graphs

Location: Briar Ridge, McKinney, TX

Updated: 4:00 AM CDT

Temperature: 70.3 °F Dew Point: 69 °F Humidity: 96% Wind: East at 2.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Lucas Creek, Lucas, TX

Updated: 4:00 AM CDT

Temperature: 70.9 °F Dew Point: 69 °F Humidity: 95% Wind: SSE at 4.0 mph Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Skywatch McKinney, Mckinney, TX

Updated: 4:06 AM CDT

Temperature: 70.3 °F Dew Point: 68 °F Humidity: 94% Wind: South at 7.2 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Star Creek, Allen, TX

Updated: 3:54 AM CDT

Temperature: 70.5 °F Dew Point: 69 °F Humidity: 94% Wind: South at 2.0 mph Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Biltmoore Court, Allen, TX

Updated: 4:05 AM CDT

Temperature: 71.2 °F Dew Point: 69 °F Humidity: 92% Wind: North at - Pressure: 29.73 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Allen, TX

Updated: 4:05 AM CDT

Temperature: 71.1 °F Dew Point: 70 °F Humidity: 98% Wind: SW at 2.0 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Country Meadow, Allen, TX

Updated: 4:04 AM CDT

Temperature: 70.7 °F Dew Point: 67 °F Humidity: 87% Wind: North at 5.1 mph Pressure: 29.88 in Hourly Precipitation: - Heat Index: - Graphs

Location: Mckinney, TX

Updated: 3:58 AM CDT

Temperature: 70.3 °F Dew Point: 70 °F Humidity: 99% Wind: ESE at 1.1 mph Pressure: 29.70 in Hourly Precipitation: - Heat Index: - Graphs

Location: Morningside, Allen, TX

Updated: 4:06 AM CDT

Temperature: 70.5 °F Dew Point: 60 °F Humidity: 69% Wind: Calm Pressure: 29.80 in Hourly Precipitation: 0.00 in Heat Index: 74 °F Graphs

Location: Charles River Court, Allen, TX

Updated: 4:05 AM CDT

Temperature: 70.9 °F Dew Point: 71 °F Humidity: 99% Wind: North at - Pressure: 29.96 in Hourly Precipitation: - Heat Index: - Graphs

Location: country club/main - ke5fco, Allen, TX

Updated: 3:52 AM CDT

Temperature: 70.3 °F Dew Point: 70 °F Humidity: 98% Wind: South at 6.8 mph Pressure: 29.85 in Hourly Precipitation: - Heat Index: - Graphs

Location: N5SKE, Allen, TX

Updated: 3:53 AM CDT

Temperature: 70.3 °F Dew Point: 70 °F Humidity: 98% Wind: ESE at 8.9 mph Pressure: 29.76 in Hourly Precipitation: - Heat Index: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Fort Worth Texas 
326 am CDT Monday may 25 2015 


Discussion... 
a shortwave trough currently near El Paso is prognosticated to move east 
into central Texas during the day today...providing our next 
opportunity for convective weather following a short reprieve 
overnight. Strong ascent will spread east into the central part of 
the state over the next few hours...which should lead to shower 
and thunderstorm development west of our County Warning Area. Hi-res model data 
suggests that this activity will develop east into our western 
counties this afternoon. The time of day should ensure maximum 
instability as lift spreads overhead later today. SBCAPE in the 
range of 2000-4000 j/kg will be sufficient when combined with 
marginal bulk shear values to generate strong to severe storms 
this afternoon...with large hail...damaging winds and a few 
tornadoes all possible. 


Moisture profiles are not as impressive as what we experienced 
during the Saturday night/Sunday event. However...respectable 
precipitable waters  of around 1.5 inches will still be plenty high for locally 
heavy rain...and the Flash Flood Watch will remain in effect 
through this evening. Fortunately...this system is pretty 
progressive and should accelerate off to the northeast during the 
evening hours...ending precipitation chances from west to east 
tonight. 


The latest model projections indicate that a subtle upper trough 
will linger overhead Tuesday following the exit of today/S fast 
moving shortwave. This pattern will set US up with the potential 
for more severe weather Tuesday afternoon and evening. Good 
surface heating is expected to occur area-wide as a dryline 
surges east near the western County Warning Area border. We have gone with highs 
around 90 across the west and the middle 80s elsewhere. Overall 
forcing associated with the trough will be fairly weak...so 
thunderstorm coverage may not become particularly high. 
However...good moisture and impressive instability values will 
ensure that just about any storm which develops will become 
severe. For now we will keep 30 probability of precipitation over the west and slight 
chance elsewhere. 


A shortwave ridge will develop overhead on Wednesday as the 
trough shifts east of the region...bringing a lull in 
precipitation chances midweek. Good moisture and strong lift will 
bring rain chances back to the region Thursday and Friday as yet 
another upper trough propagates east from the West Coast into 
West Texas. This trough will then slow down...broaden and linger 
across the Southern Plains...providing a good chance of showers 
and storms through the weekend...and possibly even into next 
Monday. Another break in the precipitation looks possible Tuesday 
and Wednesday of next week as the upper trough shifts east and an 
upper ridge develops overhead. 


30 


&& 


Aviation... 




For the 06z tafs...no significant changes made from the 00z 
tafs...so appended the previous discussion below. 


If stratus does not develop over the region as expected...it is 
possible for dense fog to develop early this morning. See a few 
stratus clouds developing on infrared satellite imagery...so 
clouds probably will develop...but will be watching this closely 
through the overnight hours. 


Cavanaugh 


../previous aviation discussion/... 
/issued 711 PM CDT sun may 24 2015/ 


For the 00z tafs...VFR conditions are expected to hold over north 
and central Texas for the remainder of the day today...under the 
influence of subsidence aloft. Low ceilings and thunderstorm chances 
tomorrow are the primary aviation weather concerns. 


Most guidance indicates that MVFR ceilings will build back over North 
Texas after midnight tonight. With upper 60s to lower 70s dew 
points already surging back north across the region...have no 
reason to doubt the consensus of guidance. Ceilings will likely fall 
to IFR levels in the early morning hours on Monday...before 
climbing back to MVFR levels after a few hours of heating Monday 
morning. 


There is a possibility for two rounds of thunderstorms to move 
across area taf sites on Monday. The first round is expected to 
develop over west central Texas and move east over the Interstate 
35 corridor early tomorrow afternoon. A second round of 
thunderstorms may develop along the dryline over northwest Texas 
late tomorrow afternoon...with storms moving east off the dryline 
towards the Interstate 35 corridor Monday evening. 


Either of these round of thunderstorms will have a chance to be 
well organized and capable of producing severe weather in the form 
of large hail and strong winds. However...it is possible that 
either round of thunderstorms will miss area taf sites. Until 
confidence increases in the coverage an intensity of thunderstorms 
tomorrow...simply went with thunderstorms in the vicinity and rain showers in those windows 
where storms are most likely to affect the dfw and Waco areas. 
Will refine the coverage and intensity for the forecast of these 
thunderstorms as confidence in these details increases moving 
forward. 


Cavanaugh 




&& 


Preliminary point temps/pops... 
Dallas-ft. Worth, Texas 81 66 87 70 85 / 70 40 20 30 20 
Waco, Texas 84 67 86 71 86 / 90 30 20 20 20 
Paris, Texas 77 65 82 68 85 / 70 60 20 20 20 
Denton, Texas 79 64 86 69 86 / 70 40 20 30 20 
McKinney, Texas 81 65 84 69 86 / 70 50 20 30 20 
Dallas, Texas 83 66 86 71 87 / 70 50 20 30 20 
Terrell, Texas 83 66 85 71 88 / 80 50 20 20 20 
Corsicana, Texas 81 67 85 72 86 / 90 50 20 20 20 
Temple, Texas 82 67 87 70 88 / 90 30 20 20 20 
Mineral Wells, Texas 77 64 88 69 86 / 70 20 30 30 20 


&& 


Forward watches/warnings/advisories... 
Flash Flood Watch through this evening for txz091>095-100>107- 
115>123-129>135-141>148-156>162-174-175. 




&& 


$$ 






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