Heat Advisory HEAT ADVISORY - Plano, Collin County, Texas
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Updated: @ 25-Jul-2026 6:50pm - next update at 6:55pm  
Summary / Temperature Wind Precipitation Outlook


Mostly cloudy, Dry
Mostly cloudy, Dry

96.7°F Colder 1.1°F than last hour.
Dangerously Hot
Currently 96.7, Max: 99.6, Min: 81.2 Feels like:
104°F

24-hr
difference
4.4°FWarmer 4.4°F than yesterday at this time.
TEMP HIGH LOW
Today 99.6°F
4:43pm
81.2°F
7:23am
Yesterday 94.9°F
4:49pm
78.5°F
7:00am
Record 109°F
1954
65°F
1915
Normal 97°F
77°F
 Wind from SSW SSW
4.3
Gust:
3.3
Light Breeze

60-Min Avg: 2.3 mph
120-Min Avg: 3.5 mph
Max Gust: 19.8 mph 10:22am
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: 0.01 in
Rain Season:1 22.53 in
Rain Days: 57 in 2026
6 days since last rain
Sunday

Sunday: Sunny
Sunny

Barometer Humidity/Dew Point Moon
Current: 29.924 inHg Falling 0.01 °F/hr
1-Hr Trend: Steady
3-Hr Trend: Falling
High: 30.059  |  Low: 29.921
Humidity: 42 %  
Humidex: 111.9°F
Dewpoint: 69.8°F Decreased 1.1°F since last hour.
Wetbulb: 78.3°F
Waxing Gibbous
Waxing Gibbous, Moon at 11 days in cycle
88%
Illuminated
Current UV Index Current Solar Energy
   0.0   None
High: 5.8 @ 1:17pm
Time to Burn: 720 Mins
Energy: 0 W/m2 (15%)
High: 816 at  1:27pm
Apparent Temp: 106.9°F
Heat Index Cooling Degree Days Sun
Current: 103.5°F
Today: 110.3°F  2:59pm
Yesterday: 107.6°F
Last Week: 126.0°F
Record: 127.2°F   26-Aug-2023
Today: 15.7
July: 533.8
2026 to Date: 1728.9
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
13:56 hrs:min
-00:01:18 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:35am
Sunset: 8:31pm
Moonrise: 6:03pm
Moonset: 2:47am
Full Moon: July 29 2026
New Moon: 17:37 UTC August 12 2026
Updated at Midnight
Current: 0.34 in   
7-Days Rain: 0.01 in   
7-Days ET: 1.91 in   
7-Day: -1.9 in 1.9 in water in deficit of what evaporated in last 7 days.
July: -4.82 in 4.82 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.13 kg/m3
Cloud Height: 6905 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:
34.7 at 6:50 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 80 °F
NWS forecast: Clear. Low around 80, with temperatures rising to around 82 overnight. Heat index values as high as 107. South southwest wind around 10 mph.
Sunday

Sunday: Sunny
Sunny

Hi 101 °F
NWS forecast: Sunny, with a high near 101. Heat index values as high as 109. South southwest wind around 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: Mostly Clear
Mostly Clear
Wednesday

Wednesday: Sunny
Sunny
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Hi 101 °F Lo 81 °F Hi 102 °F Lo 82 °F Hi 103 °F Lo 83 °F Hi 103 °F Lo 83 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.