Lewisville, Texas Weather Conditions

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Current Conditions

  • 80°
  • Clear
  • Wind: South 8 mph
  • Humidity: 64%
  • Visibility: 10.0 miles
  • Dew Point: 67°
  • Pressure: 29.96 in. -
  • Heat Index: 82

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Next 12 Hours

7  am
10  am
1  pm
4  pm
7  pm
Clear
Clear
Clear
Clear
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
79°
88°
93°
100°
95°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Partly Cloudy
  • High: 100 °
  • Low: 79 °
  • Partly Cloudy
  • Sunday
  • Partly Cloudy
  • High: 100 °
  • Low: 79 °
  • Partly Cloudy
  • Monday
  • Partly Cloudy
  • High: 97 °
  • Low: 79 °
  • Partly Cloudy
  • Tuesday
  • Chance of a Thunderstorm
  • High: 100 °
  • Low: 77 °
  • Chance of T-Storms
  • Wednesday
  • Chance of a Thunderstorm
  • High: 95 °
  • Low: 77 °
  • Chance of T-Storms

Forecast for Lewisville, Texas

Updated: 4:00 AM CDT on August 23, 2014

  • Saturday

    Clear in the morning, then partly cloudy. High of 100F. Winds from the South at 10 to 15 mph.

  • Saturday Night

    Partly cloudy. Low of 79F. Winds from the South at 5 to 15 mph.

  • Sunday

    Partly cloudy. High of 100F. Winds from the South at 5 to 10 mph.

  • Sunday Night

    Partly cloudy. Low of 79F. Winds from the SSE at 5 to 15 mph.

  • Monday

    Partly cloudy. High of 97F. Winds from the South at 5 to 10 mph.

  • Monday Night

    Partly cloudy. Low of 79F. Winds from the SE at 5 to 10 mph.

  • Tuesday

    Partly cloudy with a chance of a thunderstorm and rain. High of 100F. Winds from the ESE at 5 to 10 mph. Chance of rain 40%.

  • Tuesday Night

    Partly cloudy with a chance of a thunderstorm and rain. Low of 77F. Winds from the SE at 5 to 10 mph. Chance of rain 40%.

  • Wednesday

    Mostly cloudy with a chance of a thunderstorm and rain. High of 95F with a heat index of 102F. Winds from the SSE at 5 to 10 mph. Chance of rain 40%.

  • Wednesday Night

    Partly cloudy with a chance of a thunderstorm. Low of 77F. Winds from the ESE at 5 to 10 mph. Chance of rain 40% with rainfall amounts near 0.3 in. possible.

  • Thursday

    Partly cloudy with a chance of a thunderstorm. High of 91F. Winds from the NW at 5 to 10 mph shifting to the NNE in the afternoon. Chance of rain 50%.

  • Thursday Night

    Mostly cloudy. Low of 70F. Winds from the NNE at 5 to 10 mph.

  • Friday

    Partly cloudy. High of 93F. Winds from the NNE at 5 to 10 mph.

  • Friday Night

    Partly cloudy. Low of 68F. Winds from the NE at 5 to 10 mph.

  • Saturday

    Partly cloudy. High of 90F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 68F. Winds less than 5 mph.

  • Sunday

    Partly cloudy. High of 91F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 73F. Winds from the SE at 5 to 10 mph.

  • Monday

    Clear. High of 97F. Winds from the SSE at 5 to 10 mph.

  • Monday Night

    Clear. Low of 77F. Winds from the SSE at 5 to 10 mph.

  • Tuesday

    Partly cloudy. High of 97F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Low of 77F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Peninsula at Twin Coves, Flower Mound, TX

Updated: 8:22 AM CDT

Temperature: 79.7 °F Dew Point: 69 °F Humidity: 69% Wind: SE at 3.1 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Villages of Northshore, Flower Mound, TX

Updated: 8:18 AM CDT

Temperature: 77.9 °F Dew Point: 68 °F Humidity: 72% Wind: SE at 2.7 mph Pressure: 29.94 in Hourly Precipitation: - Heat Index: 80 °F Graphs

Location: Quail Run, Flower Mound, TX

Updated: 8:14 AM CDT

Temperature: 81.1 °F Dew Point: 66 °F Humidity: 60% Wind: SSE at 2.7 mph Pressure: 29.65 in Hourly Precipitation: - Heat Index: 83 °F Graphs

Location: Churchill Crossing, Flower Mound, TX

Updated: 8:22 AM CDT

Temperature: 78.6 °F Dew Point: 68 °F Humidity: 71% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Creekwood Estates (Just SE of 2499 & 1171), Flower Mound, TX

Updated: 8:20 AM CDT

Temperature: 78.9 °F Dew Point: 68 °F Humidity: 70% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Lake Forest 75028, Flower Mound, TX

Updated: 8:22 AM CDT

Temperature: 79.5 °F Dew Point: 68 °F Humidity: 68% Wind: SE at 2.7 mph Pressure: 28.37 in Hourly Precipitation: - Heat Index: 82 °F Graphs

Location: Westchester, Flower Mound, TX

Updated: 8:22 AM CDT

Temperature: 84.4 °F Dew Point: 73 °F Humidity: 68% Wind: SE at 6.0 mph Pressure: 29.85 in Hourly Precipitation: 0.00 in Heat Index: 91 °F Graphs

Location: 114th RC Aero Squadron, Southlake, TX

Updated: 8:14 AM CDT

Temperature: 82.0 °F Dew Point: 68 °F Humidity: 63% Wind: SE at 3.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Stone Creek, Flower Mound, TX

Updated: 8:18 AM CDT

Temperature: 83.1 °F Dew Point: 69 °F Humidity: 63% Wind: SSW at 3.1 mph Pressure: 29.79 in Hourly Precipitation: - Heat Index: 87 °F Graphs

Location: Wildwood Estates, Flower Mound, TX

Updated: 8:19 AM CDT

Temperature: 77.6 °F Dew Point: 68 °F Humidity: 73% Wind: Calm Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Lost Creek Estates, Flower Mound, TX

Updated: 8:22 AM CDT

Temperature: 77.0 °F Dew Point: 68 °F Humidity: 73% Wind: South at 2.3 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Oakwood Estates, Flower Mound, TX

Updated: 8:22 AM CDT

Temperature: 80.1 °F Dew Point: 67 °F Humidity: 64% Wind: Calm Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: One Place Lane, Flower Mound, TX

Updated: 8:22 AM CDT

Temperature: 80.1 °F Dew Point: 70 °F Humidity: 72% Wind: North at 1.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Timberview Estates West, Flower Mound, TX

Updated: 8:22 AM CDT

Temperature: 80.5 °F Dew Point: 68 °F Humidity: 66% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Woodview at Morriss, Flower Mound, TX

Updated: 8:22 AM CDT

Temperature: 80.7 °F Dew Point: 68 °F Humidity: 66% Wind: SW at 1.0 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Loch Meadow Estates, Southlake, TX

Updated: 8:22 AM CDT

Temperature: 79.9 °F Dew Point: 67 °F Humidity: 65% Wind: ESE at 2.0 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: W5CGC / KE7A, Southlake, TX

Updated: 8:15 AM CDT

Temperature: 79.7 °F Dew Point: 69 °F Humidity: 69% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Corporate at Cindy Ln., Lewisville, TX

Updated: 8:08 AM CDT

Temperature: 83.1 °F Dew Point: 69 °F Humidity: 62% Wind: Calm Pressure: 29.70 in Hourly Precipitation: - Heat Index: 87 °F Graphs

Location: Chimney Rock, Flower Mound, TX

Updated: 8:22 AM CDT

Temperature: 78.4 °F Dew Point: 69 °F Humidity: 72% Wind: Calm Pressure: 29.45 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Double Oak Fire Dept, Double Oak, TX

Updated: 8:18 AM CDT

Temperature: 79.8 °F Dew Point: 67 °F Humidity: 64% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Timber Creek, Flower Mound, TX

Updated: 8:22 AM CDT

Temperature: 80.8 °F Dew Point: 69 °F Humidity: 68% Wind: SE at 1.6 mph Pressure: 30.17 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Lakemont, Flower Mound, TX

Updated: 8:21 AM CDT

Temperature: 81.2 °F Dew Point: 68 °F Humidity: 65% Wind: SSW at 4.0 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: FM3040 at Old Orchard, Lewisville, TX

Updated: 8:22 AM CDT

Temperature: 80.3 °F Dew Point: 69 °F Humidity: 69% Wind: Calm Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Lewisville, Lewisville, TX

Updated: 8:16 AM CDT

Temperature: 82.8 °F Dew Point: 68 °F Humidity: 62% Wind: South at 5.3 mph Pressure: 29.95 in Hourly Precipitation: - Heat Index: 86 °F Graphs

Location: Indian Oaks, Lewisville, TX

Updated: 8:22 AM CDT

Temperature: 80.1 °F Dew Point: 66 °F Humidity: 61% Wind: SE at 1.1 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Liberty Park, Southlake, TX

Updated: 8:22 AM CDT

Temperature: 80.6 °F Dew Point: 67 °F Humidity: 63% Wind: SW at 6.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Canyon Oaks, Argyle, TX

Updated: 8:22 AM CDT

Temperature: 79.2 °F Dew Point: 67 °F Humidity: 67% Wind: Calm Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: Woodlake Apartments, Grapevine, TX

Updated: 8:20 AM CDT

Temperature: 81.1 °F Dew Point: 69 °F Humidity: 67% Wind: South at 3.0 mph Pressure: 29.79 in Hourly Precipitation: - Heat Index: 84 °F Graphs

Location: HV 2, Highland Village, TX

Updated: 8:22 AM CDT

Temperature: 79.5 °F Dew Point: 67 °F Humidity: 66% Wind: South at 2.2 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Trophy Club, TX, Trophy Club, TX

Updated: 8:19 AM CDT

Temperature: 80.2 °F Dew Point: 68 °F Humidity: 66% Wind: ENE at 2.0 mph Pressure: 30.15 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Highland Shores, Highland Village, TX

Updated: 8:22 AM CDT

Temperature: 81.6 °F Dew Point: 68 °F Humidity: 63% Wind: SW at 5.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Highland Shores 2, Highland Village, TX

Updated: 8:22 AM CDT

Temperature: 80.6 °F Dew Point: 67 °F Humidity: 63% Wind: SSW at 2.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Highland Shores 1, Highland Village, TX

Updated: 8:22 AM CDT

Temperature: 80.3 °F Dew Point: 67 °F Humidity: 64% Wind: South at 2.0 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Highland Village, Highland Village, TX

Updated: 8:22 AM CDT

Temperature: 81.7 °F Dew Point: 69 °F Humidity: 65% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Lakeslide Estates, Lewisville, TX

Updated: 8:22 AM CDT

Temperature: 80.1 °F Dew Point: 68 °F Humidity: 67% Wind: WSW at 2.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Shadow Ridge, Coppell, TX

Updated: 8:22 AM CDT

Temperature: 78.8 °F Dew Point: 68 °F Humidity: 70% Wind: SE at 2.0 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion...updated 
National Weather Service Fort Worth Texas 
622 am CDT Sat Aug 23 2014 


Aviation... 
/12z tafs/ 


VFR conditions expected through the period with southerly winds 
around 10kts. Some thin high clouds may try to spread into the 
region but otherwise skies will remain clear. No significant 
aviation concerns expected through the period. 


Dunn 


&& 


Previous discussion... /issued 346 am CDT Sat Aug 23 2014/ 
the main upper level features of interest this weekend across the 
Continental U.S. Are a subtropical upper level high centered over East Texas 
and an unseasonably strong upper level cyclone that is swinging 
through the northern rockies. The upper high will ensure dry and 
seasonably hot conditions over North Texas today...while the upper 
cyclone to our northwest will result in moderate southerly 
breezes. Persistence is likely the best guidance for the temperature 
forecast in the short term. But as southerly winds diminish a 
bit Sunday and Monday...this may result in high temperatures creeping up 
a degree or two...while low temperatures cool slightly in non-urban areas. 


The upper level high will begin to shift northward by Tuesday 
which will allow a TUTT...or tropical upper tropospheric trough to 
move into the region from the east. This feature can be seen now 
on the water vapor satellite near Cuba...west of the tropical 
disturbance near Hispaniola. Model guidance is in good agreement 
that the TUTT axis will be immediately followed by a tropical 
wave. The tropical wave is identifiable as an inverted trough 
axis in the low level wind/height fields. As the TUTT and tropical 
wave move into the region from the east on Tuesday and 
Wednesday...precipitable water values are forecast to surge from 
below 1.5 inches to above 2 inches. Have brought in a slight 
chance of afternoon and evening showers/storms to the eastern half 
of the area Tuesday...and have spread 20 probability of precipitation over the entire County Warning Area 
by Wednesday afternoon. Due to the increased moisture and more 
easterly fetch...high temperatures will begin to cool slightly midweek. 
If successive model runs continue to show this scenario...probability of precipitation 
may need to be increased further. 


By middle to late week we will also be watching the evolution of the 
longwave trough over the western U.S. As it will influence the 
strength and timing of a cold front. The GFS remains the fastest 
with moving this trough east and as a result has the cold front 
in before all other guidance. The UKMET and Canadian look very 
similar to the European model (ecmwf) and therefore have followed their solutions 
of a slower front...likely arriving Thursday night. Since plenty 
of tropical moisture would be in place ahead of the front...this 
is certainly good for rain chances. However due to the timing 
uncertainties of the front it is difficult to pinpoint which 12 
hour window will be the best for this rain chance. For now have 
highlighted Thursday night as the best chance with 30 probability of precipitation...with 
20 probability of precipitation Wednesday night...Thursday...and Friday. Again...probability of precipitation on 
at least one of these time periods will likely be raised when 
better confidence of frontal timing is attained. Temperatures will 
cool a few more degrees by Thursday and Friday due to the rain 
chances and cold front...but will stay pretty close to normal. 


Tr.92 


&& 


Preliminary point temps/pops... 
Dallas-ft. Worth, Texas 101 78 101 78 101 / 0 0 0 0 0 
Waco, Texas 101 75 101 74 101 / 0 0 0 0 0 
Paris, Texas 98 73 99 73 98 / 0 0 0 0 5 
Denton, Texas 101 75 101 74 100 / 0 0 0 0 0 
McKinney, Texas 99 75 100 74 100 / 0 0 0 0 0 
Dallas, Texas 100 78 101 78 101 / 0 0 0 0 0 
Terrell, Texas 100 76 101 75 101 / 0 0 0 0 5 
Corsicana, Texas 101 76 101 75 101 / 0 0 0 0 5 
Temple, Texas 100 74 100 73 100 / 0 0 0 0 0 
Mineral Wells, Texas 101 73 101 73 101 / 0 0 0 0 0 


&& 


Forward watches/warnings/advisories... 
none. 


&& 


$$ 



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