Heat Advisory HEAT ADVISORY - Plano, Collin County, Texas
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Updated: @ 23-Jul-2026 8:20am - next update at 8:25am  
Summary / Temperature Wind Precipitation Outlook


Mostly sunny, Dry
Mostly sunny, Dry

79.4°F Warmer 1.7°F than last hour.
Warm
Currently 79.4, Max: 87.2, Min: 77.5 Feels like:
81°F

24-hr
difference
-9.8°FColder 9.8°F than yesterday at this time.
TEMP HIGH LOW
Today 87.2°F
12:00am
77.5°F
7:05am
Yesterday 104.6°F
2:42pm
84.0°F
5:38am
Record 105°F
1974
59°F
1970
Normal 97°F
76°F
 Wind from ESE ESE
8.4
Gust:
4.4
Gentle Breeze

60-Min Avg: 4.6 mph
120-Min Avg: 3.5 mph
Max Gust: 14.3 mph 8:18am
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: 0.67 in
Rain Season:1 22.53 in
Rain Days: 57 in 2026
4 days since last rain
Tonight

Tonight: Mostly Clear
Mostly Clear

Barometer Humidity/Dew Point Moon
Current: 29.954 inHg  
1-Hr Trend: Steady
3-Hr Trend: Rising
High: 29.954  |  Low: 29.892
Humidity: 64 % Decreased 5% since last hour.
Humidex: 91.6°F
Dewpoint: 66.2°F Decreased 0.6°F since last hour.
Wetbulb: 70.8°F
Waxing Gibbous
Waxing Gibbous, Moon at 9 days in cycle
70%
Illuminated
Current UV Index Current Solar Energy
   0.0   None
High: 0.0 @ 12:00am
Time to Burn: 720 Mins
Energy: 0 W/m2 (69%)
High: 147 at  8:19am
Apparent Temp: 86.4°F
Heat Index Cooling Degree Days Sun
Current: 81.4°F
Today: 92.7°F  12:00am
Yesterday: 126.2°F
Last Week: 126.0°F
Record: 127.2°F   26-Aug-2023
Today: 6.3
July: 481.5
2026 to Date: 1676.6
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
13:59 hrs:min
-00:01:14 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:34am
Sunset: 8:33pm
Moonrise: 4:10pm
Moonset: 1:24am
Full Moon: July 29 2026
New Moon: 17:37 UTC August 12 2026
Updated at Midnight
Current: 0.09 in   
7-Days Rain: 0.67 in   
7-Days ET: 1.87 in   
7-Day: -1.2 in 1.2 in water in deficit of what evaporated in last 7 days.
July: -4.36 in 4.36 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.17 kg/m3
Cloud Height: 3786 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:
7.9 at 08:20 AM
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 98 °F
NWS forecast: Sunny, with a high near 98. Heat index values as high as 105. East wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight

Tonight: Mostly Clear
Mostly Clear

Lo 80 °F
NWS forecast: Mostly clear. Low around 80, with temperatures rising to around 82 overnight. Heat index values as high as 104. East southeast wind 10 to 15 mph, with gusts as high as 25 mph.
 NWS NWS Short Term Weather Forecast
Tonight

Tonight: Mostly Clear
Mostly Clear
Friday

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

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

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

Monday: Sunny
Sunny
Lo 80 °F Hi 97 °F Lo 81 °F Hi 99 °F Lo 82 °F Hi 102 °F Lo 83 °F Hi 101 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.