Extreme Heat Warning EXTREME HEAT WARNING - Plano, Collin County, Texas
Heat Advisory HEAT ADVISORY - Plano, Collin County, Texas
Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 25-Aug-2026 5:40pm - next update at 5:45pm  
Summary / Temperature Wind Precipitation Outlook


Partly cloudy, Dry
Partly cloudy, Dry

99.1°F Colder 0.4°F than last hour.
Dangerously Hot
Currently 99.1, Max: 101.7, Min: 82.3 Feels like:
100°F

24-hr
difference
-7.1°FColder 7.1°F than yesterday at this time.
TEMP HIGH LOW
Today 101.7°F
4:23pm
82.3°F
9:06am
Yesterday 108.7°F
4:30pm
84.4°F
6:44am
Record 110°F
2023
61°F
1926
Normal 94°F
75°F
 Wind from SSE SSE
6.3
Gust:
1.1
Light Breeze

60-Min Avg: 6.9 mph
120-Min Avg: 6.9 mph
Max Gust: 19.8 mph 12:41am
Month: 30.8 mph Aug 9
Today: 0.00 in
Yesterday: 0.00 in
Last
Rain:
8/4/2026
6:09 PM
August: 0.01 in
Last 7 Days: 0.00 in
Rain Season:1 22.54 in
Rain Days: 58 in 2026
21 days since last rain
Tonight

Tonight: Mostly Clear
Mostly Clear

Barometer Humidity/Dew Point Moon
Current: 29.870 inHg  
1-Hr Trend: Steady
3-Hr Trend: Falling slowly
High: 30.005  |  Low: 29.841
Humidity: 29 %  
Humidex: 107.7°F
Dewpoint: 61.3°F Decreased 0.4°F since last hour.
Wetbulb: 74.7°F
Waxing Gibbous
Waxing Gibbous, Moon at 12 days in cycle
95%
Illuminated
Current UV Index Current Solar Energy
   0.5    Low 
High: 4.5 @ 1:38pm
Time to Burn: 224 Mins
Energy: 0 W/m2 (35%)
High: 806 at  2:03pm
Apparent Temp: 106.7°F
Heat Index Cooling Degree Days Sun
Current: 100.2°F
Today: 108.9°F  2:06pm
Yesterday: 115.6°F
Last Week: 116.0°F
Record: 127.2°F   26-Aug-2023
Today: 17.5
August: 636.9
2026 to Date: 2530.7
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
13:05 hrs:min
-00:01:52 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:56am
Sunset: 8:01pm
Moonrise: 6:52pm
Moonset: 4:21am
Full Moon: August 28 2026
New Moon: 03:28 UTC September 11 2026
Updated at Midnight
Current: 0.29 in   
7-Days Rain: 0.00 in   
7-Days ET: 2.02 in   
7-Day: -2.02 in 2.02 in water in deficit of what evaporated in last 7 days.
August: -7.32 in 7.32 in water in deficit of what evaporated this month.
Irrigation System: Ready
Other Conditions
Air Density: 1.13 kg/m3
Cloud Height: 9414 ft
HIGHS: LOWS:
111.0°F
Aug 18 2023
-2.0°F
Feb 16 2021
Daytime Records
108.1°F
Aug 19 2024
3.6°F
Feb 15 2021
Nitetime Records
95.2°F
Aug 11 2023
2.1°F
Feb 16 2021
ICN:0 ISS:Ok CON:4.6 RCP:99%
Chandler Burning Index
Chandler Burning Index: MODERATE
Currently:
67.9 at 5:40 PM
1 Rain season: Jan 1st to Dec 31st.    5 Estimated amount of water needed to replace the water used by plants and evaporation from the past week. (Negative numbers mean amount of water needed, positive numbers mean excess water is present.)
 NWS Weather Forecast  -   This Afternoon's and Tonight's Outlook
This
Afternoon
This Afternoon: Sunny
Sunny

Hi 104 °F
NWS forecast: Sunny, with a high near 104. Heat index values as high as 104. South southwest wind 10 to 15 mph.
Tonight

Tonight: Mostly Clear
Mostly Clear

Lo 84 °F
NWS forecast: Mostly clear, with a low around 84. Heat index values as high as 102. South southwest wind around 10 mph, with gusts as high as 20 mph.
 NWS NWS Short Term Weather Forecast
Tonight

Tonight: Mostly Clear
Mostly Clear
Wednesday

Wednesday: Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny then Slight Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Thursday

Thursday: Slight Chance Rain Showers
Slight Chance Rain Showers
Thursday
Night
Thursday Night: Mostly Clear
Mostly Clear
Friday

Friday: Sunny
Sunny
Friday
Night
Friday Night: Clear
Clear
Saturday

Saturday: Sunny
Sunny
Lo 84 °F Hi 101 °F Lo 79 °F Hi 99 °F Lo 77 °F Hi 99 °F Lo 77 °F Hi 100 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.