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: @ 22-Jul-2026 11:25am - next update at 11:30am  
Summary / Temperature Wind Precipitation Outlook


Mostly sunny, Dry
Mostly sunny, Dry

99.7°F Warmer 2.3°F than last hour.
Dangerously Hot
Currently 99.7, Max: 99.9, Min: 84.0 Feels like:
114°F

24-hr
difference
3.6°FWarmer 3.6°F than yesterday at this time.
TEMP HIGH LOW
Today 99.9°F
11:06am
84.0°F
5:38am
Yesterday 104.3°F
2:53pm
78.7°F
6:47am
Record 109°F
2018
63°F
1970
Normal 96°F
76°F
 Wind from ENE ENE
2.6
Gust:
4.4
Light Air

60-Min Avg: 2.3 mph
120-Min Avg: 2.3 mph
Max Gust: 9.2 mph 9:05am
Month: 42.9 mph Jul 15
Today: 0.00 in
Yesterday: 0.00 in
Last
Rain:
7/19/2026
7:45 PM
July: 1.48 in
Last 7 Days: 0.67 in
Rain Season:1 22.53 in
Rain Days: 57 in 2026
3 days since last rain
Tonight

Tonight: Clear
Clear

Barometer Humidity/Dew Point Moon
Current: 29.873 inHg  
1-Hr Trend: Steady
3-Hr Trend: Steady
High: 29.886  |  Low: 29.815
Humidity: 47 % Decreased 2% since last hour.
Humidex: 120.7°F
Dewpoint: 75.9°F Increased 1°F since last hour.
Wetbulb: 82.6°F
Waxing Gibbous
Waxing Gibbous, Moon at 8 days in cycle
62%
Illuminated
Current UV Index Current Solar Energy
   4.2    Medium 
High: 4.2 @ 11:23am
Time to Burn: 27 Mins
Energy: 0 W/m2 (68%)
High: 695 at  11:22am
Apparent Temp: 121.8°F
Heat Index Cooling Degree Days Sun
Current: 114.3°F
Today: 116.5°F  11:03am
Yesterday: 115.8°F
Last Week: 115.8°F
Record: 127.2°F   26-Aug-2023
Today: 9.9
July: 456.5
2026 to Date: 1651.5
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
14:00 hrs:min
-00:01:14 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:33am
Sunset: 8:33pm
Moonrise: 3:11pm
Moonset: 12:50am
Full Moon: July 29 2026
New Moon: 17:37 UTC August 12 2026
Updated at Midnight
Current: 0.18 in   
7-Days Rain: 0.67 in   
7-Days ET: 1.77 in   
7-Day: -1.1 in 1.1 in water in deficit of what evaporated in last 7 days.
July: -4.04 in 4.04 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.12 kg/m3
Cloud Height: 6208 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: LOW
Currently:
26.8 at 11:25 AM
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  -   Today's and Tonight's Outlook
Today

Today: Sunny
Sunny

Hi 103 °F
NWS forecast: Sunny, with a high near 103. Heat index values as high as 114. North northeast wind 5 to 10 mph.
Tonight

Tonight: Clear
Clear

Lo 79 °F
NWS forecast: Clear, with a low around 79. Heat index values as high as 109. East northeast wind around 10 mph.
 NWS NWS Short Term Weather Forecast
Tonight

Tonight: Clear
Clear
Thursday

Thursday: Sunny
Sunny
Thursday
Night
Thursday Night: Mostly Clear
Mostly Clear
Friday

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

Saturday: Mostly Sunny
Mostly Sunny
Saturday
Night
Saturday Night: Mostly Clear
Mostly Clear
Sunday

Sunday: Sunny
Sunny
Lo 79 °F Hi 98 °F Lo 79 °F Hi 100 °F Lo 82 °F Hi 101 °F Lo 83 °F Hi 102 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.