Heat Advisory HEAT ADVISORY - Plano, Collin County, Texas
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Updated: @ 30-Jul-2026 11:20pm - next update at 11:25pm  
Summary / Temperature Wind Precipitation Outlook


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

89.7°F Colder 1.3°F than last hour.
Hot
Currently 89.7, Max: 99.5, Min: 81.4 Feels like:
96°F

24-hr
difference
1.8°FWarmer 1.8°F than yesterday at this time.
TEMP HIGH LOW
Today 99.5°F
4:02pm
81.4°F
6:49am
Yesterday 100.0°F
4:36pm
81.1°F
6:42am
Record 106°F
1986
63°F
1971
Normal 97°F
77°F
 Wind from SSE SSE
4.7
Gust:
4.4
Light Breeze

60-Min Avg: 9.2 mph
120-Min Avg: 6.9 mph
Max Gust: 16.5 mph 2:02pm
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: 0.00 in
Rain Season:1 22.53 in
Rain Days: 57 in 2026
11 days since last rain
Friday

Friday: Sunny
Sunny

Barometer Humidity/Dew Point Moon
Current: 29.871 inHg  
1-Hr Trend: Steady
3-Hr Trend: Rising
High: 29.940  |  Low: 29.826
Humidity: 56 %  
Humidex: 106.8°F
Dewpoint: 71.9°F Decreased 1.2°F since last hour.
Wetbulb: 77.5°F
Waning Gibbous
Waning Gibbous, Moon at 16 days in cycle
98%
Illuminated
UV Forecast Current Solar Energy
30-Jul-2026   Very High   9.9   
31-Jul-2026   Very High   10.2   
01-Aug-2026   Very High   10.8   
Energy: 0 W/m2 (0%)
High: 919 at  1:40pm
Apparent Temp: 94.3°F
Heat Index Cooling Degree Days Sun
Current: 96.4°F
Today: 112.0°F  1:22pm
Yesterday: 111.7°F
Last Week: 111.7°F
Record: 127.2°F   26-Aug-2023
Today: 21.2
July: 665.1
2026 to Date: 1860.6
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
13:48 hrs:min
-00:01:28 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:39am
Sunset: 8:27pm
Moonrise: 9:22pm
Moonset: 8:31am
Full Moon: July 29 2026
New Moon: 17:37 UTC August 12 2026
Updated at Midnight
Current: 0.27 in   
7-Days Rain: 0.00 in   
7-Days ET: 2.05 in   
7-Day: -2.05 in 2.05 in water in deficit of what evaporated in last 7 days.
July: -6.41 in 6.41 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.14 kg/m3
Cloud Height: 4826 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:99%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
14.9 at 11:20 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 Friday's Outlook
Tonight

Tonight: Mostly Clear
Mostly Clear

Lo 81 °F
NWS forecast: Mostly clear. Low around 81, with temperatures rising to around 84 overnight. Heat index values as high as 102. South wind 5 to 10 mph.
Friday

Friday: Sunny
Sunny

Hi 102 °F
NWS forecast: Sunny, with a high near 102. Heat index values as high as 109. Southwest wind around 10 mph.
 NWS NWS Short Term Weather Forecast
Friday

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

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

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

Monday: Sunny
Sunny
Monday
Night
Monday Night: Clear
Clear
Hi 102 °F Lo 81 °F Hi 97 °F Lo 75 °F Hi 95 °F Lo 75 °F Hi 98 °F Lo 78 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.