Heat Advisory HEAT ADVISORY - Plano, Collin County, Texas
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Updated: @ 30-Jul-2026 3:35pm - next update at 3:40pm  
Summary / Temperature Wind Precipitation Outlook


Partly cloudy, Dry
Partly cloudy, Dry

98.3°F Warmer 0.4°F than last hour.
Dangerously Hot
Currently 98.3, Max: 99.0, Min: 81.4 Feels like:
109°F

24-hr
difference
0.4°FWarmer 0.4°F than yesterday at this time.
TEMP HIGH LOW
Today 99.0°F
3:07pm
81.4°F
6:49am
Yesterday 100.0°F
4:36pm
81.1°F
6:42am
Record 106°F
1986
63°F
1971
Normal 97°F
77°F
 Wind from S S
8.0
Gust:
11.0
Gentle Breeze

60-Min Avg: 5.8 mph
120-Min Avg: 8.1 mph
Max Gust: 16.5 mph 2:02pm
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: 0.00 in
Rain Season:1 22.53 in
Rain Days: 57 in 2026
11 days since last rain
Tonight

Tonight: Mostly Clear
Mostly Clear

Barometer Humidity/Dew Point Moon
Current: 29.855 inHg Falling 0.02 °F/hr
1-Hr Trend: Falling slowly
3-Hr Trend: Falling
High: 29.940  |  Low: 29.835
Humidity: 44 % Decreased 2% since last hour.
Humidex: 116.1°F
Dewpoint: 72.6°F Decreased 0.8°F since last hour.
Wetbulb: 80.3°F
Waning Gibbous
Waning Gibbous, Moon at 15 days in cycle
98%
Illuminated
Current UV Index Current Solar Energy
   3.5    Medium 
High: 5.6 @ 1:18pm
Time to Burn: 32 Mins
Energy: 0 W/m2 (69%)
High: 919 at  1:40pm
Apparent Temp: 116.5°F
Heat Index Cooling Degree Days Sun
Current: 109.5°F
Today: 112.0°F  1:22pm
Yesterday: 111.7°F
Last Week: 111.7°F
Record: 127.2°F   26-Aug-2023
Today: 13.3
July: 657.2
2026 to Date: 1852.7
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
13:49 hrs:min
-00:01:26 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:39am
Sunset: 8:28pm
Moonrise: 8:52pm
Moonset: 7:32am
Full Moon: July 29 2026
New Moon: 17:37 UTC August 12 2026
Updated at Midnight
Current: 0.27 in   
7-Days Rain: 0.00 in   
7-Days ET: 2.05 in   
7-Day: -2.05 in 2.05 in water in deficit of what evaporated in last 7 days.
July: -6.41 in 6.41 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.12 kg/m3
Cloud Height: 6628 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:99%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
31.4 at 3:35 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  -   This Afternoon's and Tonight's Outlook
This
Afternoon
This Afternoon: Sunny
Sunny

Hi 100 °F
NWS forecast: Sunny, with a high near 100. Heat index values as high as 108. South wind around 10 mph.
Tonight

Tonight: Mostly Clear
Mostly Clear

Lo 81 °F
NWS forecast: Mostly clear. Low around 81, with temperatures rising to around 84 overnight. Heat index values as high as 108. South wind 5 to 10 mph.
 NWS NWS Short Term Weather Forecast
Tonight

Tonight: Mostly Clear
Mostly Clear
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
Sunday
Night
Sunday Night: Clear
Clear
Monday

Monday: Sunny
Sunny
Lo 81 °F Hi 102 °F Lo 81 °F Hi 97 °F Lo 75 °F Hi 95 °F Lo 75 °F Hi 98 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.