Extreme Heat Warning EXTREME HEAT WARNING - Plano, Collin County, Texas
spacer
Updated: @ 25-Aug-2026 3:50am - next update at 3:55am  
Summary / Temperature Wind Precipitation Outlook


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

88.3°F Colder 1.2°F than last hour.
Warm
Currently 88.3, Max: 93.7, Min: 88.3 Feels like:
90°F

24-hr
difference
-0.5°FColder 0.5°F than yesterday at this time.
TEMP HIGH LOW
Today 93.7°F
12:00am
88.3°F
3:47am
Yesterday 108.7°F
4:30pm
84.4°F
6:44am
Record 110°F
2023
61°F
1926
Normal 94°F
75°F
 Wind from SW SW
3.9
Gust:
2.2
Light Breeze

60-Min Avg: 5.8 mph
120-Min Avg: 5.8 mph
Max Gust: 19.8 mph 12:41am
Month: 30.8 mph Aug 9
Today: 0.00 in
Yesterday: 0.00 in
Last
Rain:
8/4/2026
6:09 PM
August: 0.01 in
Last 7 Days: 0.00 in
Rain Season:1 22.54 in
Rain Days: 58 in 2026
21 days since last rain
Tuesday

Tuesday: Chance Rain Showers then Mostly Sunny
Chance Rain Showers then Mostly Sunny

Barometer Humidity/Dew Point Moon
Current: 29.863 inHg  
1-Hr Trend: Steady
3-Hr Trend: Steady
High: 29.865  |  Low: 29.841
Humidity: 46 % Increased 2% since last hour.
Humidex: 99.5°F
Dewpoint: 64.9°F Increased 0.2°F since last hour.
Wetbulb: 73.1°F
Waxing Gibbous
Waxing Gibbous, Moon at 12 days in cycle
92%
Illuminated
UV Forecast Current Solar Energy
25-Aug-2026   Very High   9.6   
26-Aug-2026   Very High   9.7   
27-Aug-2026   Very High   9.4   
Energy: 0 W/m2 (0%)
High: 0 at  12:00am
Apparent Temp: 91.2°F
Heat Index Cooling Degree Days Sun
Current: 90.2°F
Today: 94.4°F  12:00am
Yesterday: 115.6°F
Last Week: 116.0°F
Record: 127.2°F   26-Aug-2023
Today: 3.9
August: 623.2
2026 to Date: 2517.1
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
13:05 hrs:min
-00:01:52 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:56am
Sunset: 8:01pm
Moonrise: 6:52pm
Moonset: 4:21am
Full Moon: August 28 2026
New Moon: 03:28 UTC September 11 2026
Updated at Midnight
Current: 0.18 in   
7-Days Rain: 0.00 in   
7-Days ET: 2.02 in   
7-Day: -2.02 in 2.02 in water in deficit of what evaporated in last 7 days.
August: -7.32 in 7.32 in water in deficit of what evaporated this month.
Irrigation System: Ready
Other Conditions
Air Density: 1.15 kg/m3
Cloud Height: 6111 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:98%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
26.7 at 03:50 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  -   Overnight's and Tuesday's Outlook
Overnight

Overnight: Chance Rain Showers
Chance Rain Showers

Lo 84 °F
NWS forecast: A chance of rain showers after 4am. Partly cloudy. Low around 84, with temperatures rising to around 86 overnight. South southwest wind around 10 mph, with gusts as high as 25 mph.
Tuesday

Tuesday: Chance Rain Showers then Mostly Sunny
Chance Rain Showers then Mostly Sunny

Hi 104 °F
NWS forecast: A chance of rain showers before 7am. Mostly sunny, with a high near 104. Heat index values as high as 104. South southwest wind 5 to 10 mph, with gusts as high as 25 mph.
 NWS NWS Short Term Weather Forecast
Tuesday

Tuesday: Chance Rain Showers then Mostly Sunny
Chance Rain Showers then Mostly Sunny
Tuesday
Night
Tuesday Night: Mostly Clear
Mostly Clear
Wednesday

Wednesday: Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny then Slight Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Thursday

Thursday: Sunny
Sunny
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
Friday

Friday: Sunny
Sunny
Friday
Night
Friday Night: Mostly Clear
Mostly Clear
Hi 104 °F Lo 83 °F Hi 102 °F Lo 80 °F Hi 99 °F Lo 78 °F Hi 98 °F Lo 78 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.