Heat Advisory HEAT ADVISORY - Plano, Collin County, Texas
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Updated: @ 17-Aug-2025 1:55pm - next update at 2:00pm  
Summary / Temperature Wind Precipitation Outlook


Mostly sunny, Dry
Mostly sunny, Dry

94.1°F Warmer 2.9°F than last hour.
Hot
Currently 94.1, Max: 94.1, Min: 78.8 Feels like:
105°F

24-hr
difference
1.3°FWarmer 1.3°F than yesterday at this time.
TEMP HIGH LOW
Today 94.1°F
1:54pm
78.8°F
6:59am
Yesterday 96.8°F
4:13pm
78.7°F
7:18am
Record 109°F
2023
63°F
1992
Normal 96°F
76°F
 Wind from S S
3.6
Gust:
1.1
Light Breeze

60-Min Avg: 3.5 mph
120-Min Avg: 4.6 mph
Max Gust: 16.5 mph 2:10am
Month: 40.7 mph Aug 12
Today: 0.00 in
Yesterday: 0.00 in
Last
Rain:
8/12/2025
4:34 PM
August: 2.35 in
Last 7 Days: 1.66 in
Rain Season:1 29.65 in
Rain Days: 61 in 2025
4 days since last rain
Tonight

Tonight: Partly cloudy, with a low around 79. South southeast wind around 5 mph.
Partly Cloudy


Barometer Humidity/Dew Point Moon
Current: 29.976 inHg Falling 0.02 °F/hr
1-Hr Trend: Falling slowly
3-Hr Trend: Falling
High: 30.015  |  Low: 29.964
Humidity: 51 % Decreased 4% since last hour.
Humidex: 112.4°F
Dewpoint: 73.2°F Increased 1°F since last hour.
Wetbulb: 79.5°F
Waning Crescent
Waning Crescent, Moon at 23 days in cycle
32%
Illuminated
Current UV Index Current Solar Energy
   5.2    Medium 
High: 6.0 @ 12:54pm
Time to Burn: 22 Mins
Energy: 0 W/m2 (72%)
High: 1002 at  12:55pm
Apparent Temp: 115.2°F
Heat Index Cooling Degree Days Sun
Current: 104.9°F
Today: 105.2°F  1:54pm
Yesterday: 107.1°F
Last Week: 111.1°F
Record: 127.2°F   26-Aug-2023
Today: 10.4
August: 333.5
2025 to Date: 1961.9
Heating Degree Days
2025 to Date: 1375.3
Sunlight Hours
Possible hours of Daylight
13:19 hrs:min
-00:01:47 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:51am
Sunset: 8:10pm
Moonrise: 12:51am
Moonset: 3:54pm
Full Moon: August 09 2025
New Moon: 06:07 UTC August 23 2025
Updated at Midnight
Current: 0.22 in   
7-Days Rain: 1.66 in   
7-Days ET: 1.72 in   
7-Day: -0.06 in 0.06 in water in deficit of what evaporated in last 7 days.
August: -1.46 in 1.46 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.14 kg/m3
Cloud Height: 5537 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:4.5 RCP:98%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
20.7 at 1:55 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: A 20 percent chance of showers and thunderstorms.  Partly sunny, with a high near 97. Heat index values as high as 106. South wind 5 to 10 mph.
Slight Chance
T-storms


Hi 97 °F
NWS forecast: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 97. Heat index values as high as 106. South wind 5 to 10 mph.
Tonight

Tonight: Partly cloudy, with a low around 79. South southeast wind around 5 mph.
Partly Cloudy


Lo 79 °F
NWS forecast: Partly cloudy, with a low around 79. South southeast wind around 5 mph.
 NWS NWS Short Term Weather Forecast
Tonight

Tonight: Partly cloudy, with a low around 79. South southeast wind around 5 mph.
Partly Cloudy

Monday

Monday: A slight chance of showers, with thunderstorms also possible after 1pm.  Sunny and hot, with a high near 99. Heat index values as high as 108. South southwest wind around 5 mph.  Chance of precipitation is 20%.
Slight Chance
Showers then
Slight Chance
T-storms
Monday
Night
Monday Night: Mostly clear, with a low around 80. East southeast wind around 5 mph becoming calm  in the evening.
Mostly Clear

Tuesday

Tuesday: Sunny and hot, with a high near 100. Calm wind becoming east northeast around 5 mph in the afternoon.
Hot

Tuesday
Night
Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 79. East wind around 5 mph becoming calm  in the evening.
Partly Cloudy
then Slight
Chance
T-storms
Wednesday

Wednesday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 97. Calm wind becoming north around 5 mph in the afternoon.  Chance of precipitation is 40%.
Chance
T-storms

Wednesday
Night
Wednesday Night: A 30 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 74. North northeast wind around 5 mph.
Chance
T-storms

Thursday

Thursday: A chance of showers, with thunderstorms also possible after 1pm.  Mostly sunny, with a high near 95. North northeast wind around 5 mph.  Chance of precipitation is 40%.
Chance
Showers then
Chance
T-storms
Lo 79 °F Hi 99 °F Lo 80 °F Hi 100 °F Lo 79 °F Hi 97 °F Lo 74 °F Hi 95 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.