Heat Advisory HEAT ADVISORY - Plano, Collin County, Texas
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Updated: @ 28-Jul-2026 3:40pm - next update at 3:45pm  
Summary / Temperature Wind Precipitation Outlook


Mostly sunny, Dry
Mostly sunny, Dry

101.0°F Warmer 1.9°F than last hour.
Dangerously Hot
Currently 101.0, Max: 101.1, Min: 80.0 Feels like:
111°F

24-hr
difference
1.6°FWarmer 1.6°F than yesterday at this time.
TEMP HIGH LOW
Today 101.1°F
3:38pm
80.0°F
6:53am
Yesterday 100.8°F
3:49pm
81.1°F
6:41am
Record 105°F
2008
66°F
1994
Normal 97°F
77°F
 Wind from SSE SSE
7.0
Gust:
5.5
Light Breeze

60-Min Avg: 3.5 mph
120-Min Avg: 2.3 mph
Max Gust: 17.6 mph 2:22am
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
9 days since last rain
Tonight

Tonight: Mostly Clear
Mostly Clear

Barometer Humidity/Dew Point Moon
Current: 29.790 inHg Falling 0.02 °F/hr
1-Hr Trend: Falling slowly
3-Hr Trend: Falling
High: 29.872  |  Low: 29.790
Humidity: 38 % Decreased 4% since last hour.
Humidex: 117.0°F
Dewpoint: 70.7°F Decreased 1°F since last hour.
Wetbulb: 80.0°F
Full Moon
Full Moon, Moon at 14 days in cycle
99%
Illuminated
Current UV Index Current Solar Energy
   4.2    Medium 
High: 6.0 @ 1:46pm
Time to Burn: 27 Mins
Energy: 0 W/m2 (72%)
High: 897 at  1:51pm
Apparent Temp: 119.4°F
Heat Index Cooling Degree Days Sun
Current: 111.3°F
Today: 111.5°F  3:38pm
Yesterday: 112.1°F
Last Week: 126.0°F
Record: 127.2°F   26-Aug-2023
Today: 12.9
July: 606.4
2026 to Date: 1801.7
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
13:52 hrs:min
-00:01:23 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:37am
Sunset: 8:29pm
Moonrise: 7:40pm
Moonset: 5:32am
Full Moon: July 29 2026
New Moon: 17:37 UTC August 12 2026
Updated at Midnight
Current: 0.34 in   
7-Days Rain: 0.00 in   
7-Days ET: 2.04 in   
7-Day: -2.04 in 2.04 in water in deficit of what evaporated in last 7 days.
July: -5.79 in 5.79 in water in deficit of what evaporated this month.
Irrigation System: Ready
Other Conditions
Air Density: 1.12 kg/m3
Cloud Height: 7686 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:99%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
43.6 at 3:40 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 102 °F
NWS forecast: Sunny, with a high near 102. Heat index values as high as 110. South wind 5 to 10 mph.
Tonight

Tonight: Mostly Clear
Mostly Clear

Lo 81 °F
NWS forecast: Mostly clear. Low around 81, with temperatures rising to around 83 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
Wednesday

Wednesday: Mostly Sunny
Mostly Sunny
Wednesday
Night
Wednesday Night: Partly Cloudy
Partly Cloudy
Thursday

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

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

Saturday: Sunny
Sunny
Lo 81 °F Hi 101 °F Lo 82 °F Hi 102 °F Lo 82 °F Hi 103 °F Lo 82 °F Hi 99 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.