Heat Advisory HEAT ADVISORY - Plano, Collin County, Texas
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Updated: @ 23-Jul-2026 10:00pm - next update at 10:05pm  
Summary / Temperature Wind Precipitation Outlook


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

87.1°F Colder 1.3°F than last hour.
Warm
Currently 87.1, Max: 96.0, Min: 77.5 Feels like:
96°F

24-hr
difference
-4.1°FColder 4.1°F than yesterday at this time.
TEMP HIGH LOW
Today 96.0°F
4:01pm
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 SSE SSE
6.5
Gust:
4.4
Light Breeze

60-Min Avg: 5.8 mph
120-Min Avg: 6.9 mph
Max Gust: 23.1 mph 4:19pm
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
Friday

Friday: Mostly Sunny
Mostly Sunny

Barometer Humidity/Dew Point Moon
Current: 29.936 inHg Rising 0.02 °F/hr
1-Hr Trend: Rising slowly
3-Hr Trend: Rising
High: 29.971  |  Low: 29.874
Humidity: 65 % Increased 1% since last hour.
Humidex: 106.1°F
Dewpoint: 73.9°F Decreased 0.8°F since last hour.
Wetbulb: 77.9°F
Waxing Gibbous
Waxing Gibbous, Moon at 9 days in cycle
75%
Illuminated
UV Forecast Current Solar Energy
23-Jul-2026   Very High   10.5   
24-Jul-2026   Very High   10.4   
25-Jul-2026   Very High   10.9   
Energy: 0 W/m2 (0%)
High: 831 at  1:42pm
Apparent Temp: 91.3°F
Heat Index Cooling Degree Days Sun
Current: 95.5°F
Today: 111.1°F  2:50pm
Yesterday: 126.2°F
Last Week: 126.0°F
Record: 127.2°F   26-Aug-2023
Today: 17.2
July: 492.4
2026 to Date: 1687.5
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
13:57 hrs:min
-00:01:16 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:35am
Sunset: 8:32pm
Moonrise: 5:08pm
Moonset: 2:03am
Full Moon: July 29 2026
New Moon: 17:37 UTC August 12 2026
Updated at Midnight
Current: 0.29 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: -4.35 in 4.35 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.15 kg/m3
Cloud Height: 3776 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:
7.8 at 10:00 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 Friday'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 104. East southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Friday

Friday: Mostly Sunny
Mostly Sunny

Hi 97 °F
NWS forecast: Mostly sunny, with a high near 97. Heat index values as high as 105. South wind 10 to 15 mph, with gusts as high as 25 mph.
 NWS NWS Short Term Weather Forecast
Friday

Friday: Mostly Sunny
Mostly Sunny
Friday
Night
Friday Night: Partly Cloudy
Partly Cloudy
Saturday

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

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

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