Heat Advisory HEAT ADVISORY - Plano, Collin County, Texas
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Updated: @ 16-Sep-2026 12:25pm - next update at 12:30pm  
Summary / Temperature Wind Precipitation Outlook


Mostly sunny, Dry
Mostly sunny, Dry

96.0°F Warmer 2.8°F than last hour.
Dangerously Hot
Currently 96.0, Max: 96.1, Min: 80.5 Feels like:
105°F

24-hr
difference
1°FWarmer 1°F than yesterday at this time.
TEMP HIGH LOW
Today 96.1°F
12:23pm
80.5°F
7:24am
Yesterday 101.0°F
3:16pm
80.0°F
7:25am
Record 102°F
1900
50°F
1903
Normal 89°F
69°F
 Wind from SSW SSW
5.9
Gust:
6.6
Light Breeze

60-Min Avg: 3.5 mph
120-Min Avg: 5.8 mph
Max Gust: 17.6 mph 12:06am
Month: 26.5 mph Sep 11
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
43 days since last rain
Tonight

Tonight: Mostly Clear
Mostly Clear

Barometer Humidity/Dew Point Moon
Current: 30.154 inHg Falling 0.01 °F/hr
1-Hr Trend: Steady
3-Hr Trend: Steady
High: 30.165  |  Low: 30.022
Humidity: 45 % Decreased 4% since last hour.
Humidex: 112.5°F
Dewpoint: 71.2°F Increased 0.2°F since last hour.
Wetbulb: 78.9°F
Waxing Crescent
Waxing Crescent, Moon at 5 days in cycle
30%
Illuminated
Current UV Index Current Solar Energy
   4.0    Medium 
High: 4.0 @ 12:24pm
Time to Burn: 28 Mins
Energy: 0 W/m2 (87%)
High: 716 at  12:24pm
Apparent Temp: 114.5°F
Heat Index Cooling Degree Days Sun
Current: 104.8°F
Today: 105.2°F  12:05pm
Yesterday: 111.0°F
Last Week: 116.5°F
Record: 127.2°F   26-Aug-2023
Today: 9.8
September: 363.5
2026 to Date: 3055.4
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
12:22 hrs:min
-00:02:00 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 7:11am
Sunset: 7:33pm
Moonrise: 12:44pm
Moonset: 9:52pm
Full Moon: September 26 2026
New Moon: 15:51 UTC October 10 2026
Updated at Midnight
Current: 0.21 in   
7-Days Rain: 0.00 in   
7-Days ET: 1.81 in   
7-Day: -1.81 in 1.81 in water in deficit of what evaporated in last 7 days.
September: -3.67 in 3.67 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.14 kg/m3
Cloud Height: 6424 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:98%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
29.4 at 12:25 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  -   Today's and Tonight's Outlook
Today

Today: Sunny
Sunny

Hi 100 °F
NWS forecast: Sunny. High near 100, with temperatures falling to around 98 in the afternoon. Heat index values as high as 103. South southeast wind 5 to 10 mph.
Tonight

Tonight: Mostly Clear
Mostly Clear

Lo 79 °F
NWS forecast: Mostly clear. Low around 79, with temperatures rising to around 81 overnight. Heat index values as high as 101. Southeast wind 5 to 10 mph.
 NWS NWS Short Term Weather Forecast
Tonight

Tonight: Mostly Clear
Mostly Clear
Thursday

Thursday: Mostly Sunny
Mostly Sunny
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
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
Lo 79 °F Hi 98 °F Lo 78 °F Hi 99 °F Lo 78 °F Hi 99 °F Lo 77 °F Hi 99 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.