Heat Advisory HEAT ADVISORY - Plano, Collin County, Texas
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Updated: @ 06-Sep-2026 9:00pm - next update at 9:05pm  
Summary / Temperature Wind Precipitation Outlook


Night time, Dry, Scattered clouds
Night time, Dry, Scattered clouds

91.4°F Colder 1.8°F than last hour.
Hot
Currently 91.4, Max: 99.8, Min: 77.1 Feels like:
97°F

24-hr
difference
3.5°FWarmer 3.5°F than yesterday at this time.
TEMP HIGH LOW
Today 99.8°F
3:47pm
77.1°F
6:55am
Yesterday 99.4°F
4:23pm
78.2°F
7:06am
Record 105°F
2023
55°F
1974
Normal 91°F
72°F
 Wind from SSE SSE
3.2
Gust:
5.5
Light Breeze

60-Min Avg: 1.2 mph
120-Min Avg: 5.8 mph
Max Gust: 18.7 mph 1:31pm
Month: 23.1 mph Sep 3
Today: 0.00 in
Yesterday: 0.00 in
Last
Rain:
8/4/2026
6:09 PM
September: 0.00 in
Last 7 Days: 0.00 in
Rain Season:1 22.54 in
Rain Days: 58 in 2026
33 days since last rain
Labor
Day
Labor Day: Sunny
Sunny

Barometer Humidity/Dew Point Moon
Current: 29.825 inHg Rising 0.02 °F/hr
1-Hr Trend: Rising slowly
3-Hr Trend: Steady
High: 29.934  |  Low: 29.798
Humidity: 48 % Increased 2% since last hour.
Humidex: 105.8°F
Dewpoint: 69.0°F Decreased 0.4°F since last hour.
Wetbulb: 76.2°F
Waning Crescent
Waning Crescent, Moon at 25 days in cycle
20%
Illuminated
UV Forecast Current Solar Energy
06-Sep-2026   Very High   8.6   
07-Sep-2026   Very High   9.0   
08-Sep-2026   Very High   8.9   
Energy: 0 W/m2 (0%)
High: 869 at  1:52pm
Apparent Temp: 95.9°F
Heat Index Cooling Degree Days Sun
Current: 96.5°F
Today: 111.6°F  2:16pm
Yesterday: 109.5°F
Last Week: 111.6°F
Record: 127.2°F   26-Aug-2023
Today: 15.9
September: 128.1
2026 to Date: 2819.4
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
12:40 hrs:min
-00:01:58 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 7:05am
Sunset: 7:45pm
Moonrise: 3:02am
Moonset: 5:36pm
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: 1.43 in   
7-Day: -1.43 in 1.43 in water in deficit of what evaporated in last 7 days.
September: -1.14 in 1.14 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.14 kg/m3
Cloud Height: 5894 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:4 ISS:Ok CON:4.6 RCP:98%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
24.3 at 9:00 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 Labor Day's Outlook
Tonight

Tonight: Mostly Clear
Mostly Clear

Lo 80 °F
NWS forecast: Mostly clear, with a low around 80. Heat index values as high as 102. South wind 0 to 10 mph.
Labor
Day
Labor Day: Sunny
Sunny

Hi 100 °F
NWS forecast: Sunny, with a high near 100. Heat index values as high as 104. South southeast wind 0 to 10 mph.
 NWS NWS Short Term Weather Forecast
Labor
Day
Labor Day: 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
Thursday

Thursday: Sunny
Sunny
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
Hi 100 °F Lo 81 °F Hi 100 °F Lo 80 °F Hi 100 °F Lo 80 °F Hi 99 °F Lo 79 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.