Heat Advisory HEAT ADVISORY - Plano, Collin County, Texas
spacer
Updated: @ 20-Jul-2026 6:25pm - next update at 6:30pm  
Summary / Temperature Wind Precipitation Outlook


Mostly cloudy, Dry
Mostly cloudy, Dry

97.0°F Colder 2.2°F than last hour.
Dangerously Hot
Currently 97.0, Max: 100.5, Min: 80.5 Feels like:
106°F

24-hr
difference
2.5°FWarmer 2.5°F than yesterday at this time.
TEMP HIGH LOW
Today 100.5°F
4:21pm
80.5°F
6:40am
Yesterday 98.7°F
4:44pm
79.3°F
6:46am
Record 109°F
2022
65°F
2014
Normal 96°F
76°F
 Wind from E E
6.9
Gust:
4.4
Light Breeze

60-Min Avg: 5.8 mph
120-Min Avg: 1.2 mph
Max Gust: 13.2 mph 12:03am
Month: 42.9 mph Jul 15
Today: 0.00 in
Yesterday: 0.01 in
Last
Rain:
7/19/2026
7:45 PM
July: 1.48 in
Last 7 Days: 1.47 in
Rain Season:1 22.53 in
Rain Days: 57 in 2026
5 rain days in July
Tuesday

Tuesday: Sunny
Sunny

Barometer Humidity/Dew Point Moon
Current: 29.820 inHg  
1-Hr Trend: Steady
3-Hr Trend: Falling
High: 29.935  |  Low: 29.820
Humidity: 44 % Increased 5% since last hour.
Humidex: 113.7°F
Dewpoint: 71.5°F Increased 1.5°F since last hour.
Wetbulb: 79.3°F
Waxing Crescent
Waxing Crescent, Moon at 6 days in cycle
45%
Illuminated
Current UV Index Current Solar Energy
   0.5    Low 
High: 5.8 @ 1:14pm
Time to Burn: 224 Mins
Energy: 0 W/m2 (18%)
High: 852 at  1:35pm
Apparent Temp: 106.7°F
Heat Index Cooling Degree Days Sun
Current: 106.4°F
Today: 112.6°F  2:23pm
Yesterday: 110.5°F
Last Week: 111.6°F
Record: 127.2°F   26-Aug-2023
Today: 15.6
July: 409.3
2026 to Date: 1604.2
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
14:02 hrs:min
-00:01:10 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:32am
Sunset: 8:34pm
Moonrise: 1:11pm
Moonset: 11:52pm
Full Moon: July 29 2026
New Moon: 17:37 UTC August 12 2026
Updated at Midnight
Current: 0.32 in   
7-Days Rain: 1.47 in   
7-Days ET: 1.54 in   
7-Day: -0.07 in 0.07 in water in deficit of what evaporated in last 7 days.
July: -3.45 in 3.45 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.13 kg/m3
Cloud Height: 6598 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:19 ISS:Ok CON:4.6 RCP:98%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
31.2 at 6:25 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 Tuesday's Outlook
Tonight

Tonight: Clear
Clear

Lo 81 °F
NWS forecast: Clear. Low around 81, with temperatures rising to around 83 overnight. Heat index values as high as 104. South wind around 5 mph.
Tuesday

Tuesday: Sunny
Sunny

Hi 103 °F
NWS forecast: Sunny, with a high near 103. Heat index values as high as 108. West wind 0 to 5 mph.
 NWS NWS Short Term Weather Forecast
Tuesday

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

Wednesday: Sunny
Sunny
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday

Thursday: Sunny
Sunny
Thursday
Night
Thursday Night: Clear
Clear
Friday

Friday: Sunny
Sunny
Friday
Night
Friday Night: Mostly Clear
Mostly Clear
Hi 103 °F Lo 84 °F Hi 103 °F Lo 82 °F Hi 100 °F Lo 81 °F Hi 101 °F Lo 83 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.