Extreme Heat Warning EXTREME HEAT WARNING - Plano, Collin County, Texas
Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 22-Aug-2026 10:20pm - next update at 10:25pm  
Summary / Temperature Wind Precipitation Outlook


Night time, Dry, Clear skies
Night time, Dry, Clear skies

92.0°F Colder 2°F than last hour.
Hot
Currently 92.0, Max: 103.0, Min: 80.3 Feels like:
96°F

24-hr
difference
1.8°FWarmer 1.8°F than yesterday at this time.
TEMP HIGH LOW
Today 103.0°F
12:47pm
80.3°F
6:45am
Yesterday 100.3°F
4:41pm
82.2°F
7:07am
Record 105°F
2010
61°F
1956
Normal 95°F
75°F
 Wind from ESE ESE
6.4
Gust:
4.4
Light Breeze

60-Min Avg: 3.5 mph
120-Min Avg: Calm
Max Gust: 14.3 mph 12:04pm
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
18 days since last rain
Sunday

Sunday: Slight Chance Rain Showers then Mostly Sunny
Slight Chance Rain Showers then Mostly Sunny

Barometer Humidity/Dew Point Moon
Current: 29.921 inHg Rising 0.03 °F/hr
1-Hr Trend: Rising
3-Hr Trend: Rising
High: 30.024  |  Low: 29.843
Humidity: 45 % Decreased 1% since last hour.
Humidex: 105.3°F
Dewpoint: 67.6°F Decreased 2.5°F since last hour.
Wetbulb: 75.7°F
Waxing Gibbous
Waxing Gibbous, Moon at 10 days in cycle
77%
Illuminated
UV Forecast Current Solar Energy
23-Aug-2026   Very High   10.1   
24-Aug-2026   Very High   9.1   
25-Aug-2026   Very High   9.4   
Energy: 0 W/m2 (0%)
High: 918 at  12:41pm
Apparent Temp: 94.5°F
Heat Index Cooling Degree Days Sun
Current: 95.6°F
Today: 116.1°F  12:43pm
Yesterday: 109.1°F
Last Week: 114.9°F
Record: 127.2°F   26-Aug-2023
Today: 21.4
August: 552.5
2026 to Date: 2446.2
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
13:09 hrs:min
-00:01:52 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:55am
Sunset: 8:04pm
Moonrise: 5:34pm
Moonset: 2:22am
Full Moon: August 28 2026
New Moon: 03:28 UTC September 11 2026
Updated at Midnight
Current: 0.23 in   
7-Days Rain: 0.00 in   
7-Days ET: 2.06 in   
7-Day: -2.06 in 2.06 in water in deficit of what evaporated in last 7 days.
August: -6.44 in 6.44 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.14 kg/m3
Cloud Height: 6336 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:1 ISS:Ok CON:4.6 RCP:98%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
28.8 at 10:20 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  -   Tonight's and Sunday's Outlook
Tonight

Tonight: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms

Lo 83 °F
NWS forecast: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 83. East southeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Sunday

Sunday: Slight Chance Rain Showers then Mostly Sunny
Slight Chance Rain Showers then Mostly Sunny

Hi 106 °F
NWS forecast: A slight chance of rain showers before 7am. Mostly sunny, with a high near 106. Heat index values as high as 108. South wind 5 to 10 mph.
 NWS NWS Short Term Weather Forecast
Sunday

Sunday: Slight Chance Rain Showers then Mostly Sunny
Slight Chance Rain Showers then Mostly Sunny
Sunday
Night
Sunday Night: Mostly Clear
Mostly Clear
Monday

Monday: Mostly Sunny
Mostly Sunny
Monday
Night
Monday Night: Mostly Clear
Mostly Clear
Tuesday

Tuesday: Sunny
Sunny
Tuesday
Night
Tuesday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Wednesday

Wednesday: Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Slight Chance Rain Showers then Slight Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Slight Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms
Hi 106 °F Lo 85 °F Hi 107 °F Lo 84 °F Hi 107 °F Lo 83 °F Hi 104 °F Lo 79 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.