Heat Advisory HEAT ADVISORY - Plano, Collin County, Texas
spacer
Updated: @ 15-Aug-2026 7:25pm - next update at 7:30pm  
Summary / Temperature Wind Precipitation Outlook


Mostly cloudy, Dry
Mostly cloudy, Dry

97.1°F Colder 1.6°F than last hour.
Dangerously Hot
Currently 97.1, Max: 101.4, Min: 80.7 Feels like:
102°F

24-hr
difference
1.1°FWarmer 1.1°F than yesterday at this time.
TEMP HIGH LOW
Today 101.4°F
4:12pm
80.7°F
7:16am
Yesterday 102.4°F
4:07pm
79.3°F
7:06am
Record 107°F
1951
64°F
1955
Normal 96°F
76°F
 Wind from SSW SSW
7.3
Gust:
6.6
Gentle Breeze

60-Min Avg: 8.1 mph
120-Min Avg: 10.4 mph
Max Gust: 20.9 mph 1:37pm
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
11 days since last rain
Sunday

Sunday: Sunny
Sunny

Barometer Humidity/Dew Point Moon
Current: 29.970 inHg Falling 0.01 °F/hr
1-Hr Trend: Steady
3-Hr Trend: Falling
High: 30.106  |  Low: 29.969
Humidity: 38 % Decreased 1% since last hour.
Humidex: 110.1°F
Dewpoint: 67.3°F Decreased 2.2°F since last hour.
Wetbulb: 77.0°F
Waxing Crescent
Waxing Crescent, Moon at 3 days in cycle
13%
Illuminated
Current UV Index Current Solar Energy
   0.0   None
High: 5.4 @ 1:20pm
Time to Burn: 720 Mins
Energy: 0 W/m2 (34%)
High: 821 at  2:28pm
Apparent Temp: 104.7°F
Heat Index Cooling Degree Days Sun
Current: 101.8°F
Today: 113.8°F  3:52pm
Yesterday: 111.3°F
Last Week: 114.7°F
Record: 127.2°F   26-Aug-2023
Today: 17.0
August: 353.9
2026 to Date: 2247.2
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
13:22 hrs:min
-00:01:46 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:50am
Sunset: 8:12pm
Moonrise: 10:55am
Moonset: 9:50pm
Full Moon: August 28 2026
New Moon: 03:28 UTC September 11 2026
Updated at Midnight
Current: 0.37 in   
7-Days Rain: 0.00 in   
7-Days ET: 2.34 in   
7-Day: -2.34 in 2.34 in water in deficit of what evaporated in last 7 days.
August: -4.39 in 4.39 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.13 kg/m3
Cloud Height: 7583 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:9 ISS:Ok CON:4.6 RCP:98%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
42.9 at 7:25 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: Clear
Clear

Lo 81 °F
NWS forecast: Clear. Low around 81, with temperatures rising to around 84 overnight. Heat index values as high as 101. South wind around 10 mph, with gusts as high as 20 mph.
Sunday

Sunday: Sunny
Sunny

Hi 102 °F
NWS forecast: Sunny, with a high near 102. Heat index values as high as 102. South southwest wind 5 to 10 mph.
 NWS NWS Short Term Weather Forecast
Sunday

Sunday: Sunny
Sunny
Sunday
Night
Sunday Night: Clear
Clear
Monday

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

Tuesday: Sunny
Sunny
Tuesday
Night
Tuesday Night: Clear
Clear
Wednesday

Wednesday: Sunny
Sunny
Wednesday
Night
Wednesday Night: Clear
Clear
Hi 102 °F Lo 80 °F Hi 103 °F Lo 81 °F Hi 103 °F Lo 82 °F Hi 103 °F Lo 82 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.