Heat Advisory HEAT ADVISORY - Plano, Collin County, Texas
Air Quality Alert AIR QUALITY ALERT - Plano, Collin County, Texas
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Updated: @ 20-Aug-2025 8:15am - next update at 8:20am  
Summary / Temperature Wind Precipitation Outlook


Sunny, Dry
Sunny, Dry

79.6°F Warmer 1.2°F than last hour.
Warm
Currently 79.6, Max: 88.3, Min: 78.2 Feels like:
83°F

24-hr
difference
-2.5°FColder 2.5°F than yesterday at this time.
TEMP HIGH LOW
Today 88.3°F
1:04am
78.2°F
7:05am
Yesterday 101.5°F
3:27pm
79.3°F
7:14am
Record 109°F
2023
58°F
1940
Normal 96°F
76°F
 Wind from N N
5.2
Gust:
2.2
Light Breeze

60-Min Avg: 2.3 mph
120-Min Avg: 3.5 mph
Max Gust: 18.7 mph 2:11am
Month: 40.7 mph Aug 12
Today: 0.00 in
Yesterday: 0.00 in
Last
Rain:
8/17/2025
4:51 PM
August: 2.36 in
Last 7 Days: 0.01 in
Rain Season:1 29.66 in
Rain Days: 62 in 2025
3 days since last rain
Tonight

Tonight: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am.  Partly cloudy, with a low around 76. Northeast wind 5 to 10 mph becoming west after midnight.  Chance of precipitation is 20%.
Slight Chance
T-storms then
Slight Chance
Showers

Barometer Humidity/Dew Point Moon
Current: 29.976 inHg Rising 0.04 °F/hr
1-Hr Trend: Rising
3-Hr Trend: Rising
High: 29.980  |  Low: 29.907
Humidity: 75 % Decreased 1% since last hour.
Humidex: 95.8°F
Dewpoint: 71.0°F Increased 0.8°F since last hour.
Wetbulb: 73.8°F
Waning Crescent
Waning Crescent, Moon at 26 days in cycle
8%
Illuminated
Current UV Index Current Solar Energy
   0.0   None
High: 0.0 @ 12:00am
Time to Burn: 720 Mins
Energy: 0 W/m2 (100%)
High: 158 at  8:11am
Apparent Temp: 90.0°F
Heat Index Cooling Degree Days Sun
Current: 82.8°F
Today: 94.9°F  1:06am
Yesterday: 115.4°F
Last Week: 114.4°F
Record: 127.2°F   26-Aug-2023
Today: 6.3
August: 402.2
2025 to Date: 2030.7
Heating Degree Days
2025 to Date: 1375.3
Sunlight Hours
Possible hours of Daylight
13:14 hrs:min
-00:01:50 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 6:53am
Sunset: 8:07pm
Moonrise: 3:53am
Moonset: 6:41pm
Full Moon: August 09 2025
New Moon: 06:07 UTC August 23 2025
Updated at Midnight
Current: 0.09 in   
7-Days Rain: 0.01 in   
7-Days ET: 1.61 in   
7-Day: -1.6 in 1.6 in water in deficit of what evaporated in last 7 days.
August: -2.05 in 2.05 in water in deficit of what evaporated this month.
Irrigation System: Standby
Other Conditions
Air Density: 1.17 kg/m3
Cloud Height: 2729 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:3 ISS:Ok CON:4.5 RCP:98%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
2.8 at 08:15 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  -   Today's and Tonight's Outlook
Today

Today: A chance of showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm.  Sunny, with a high near 97. Heat index values as high as 105. North wind 5 to 10 mph.  Chance of precipitation is 30%.
Chance
T-storms


Hi 97 °F
NWS forecast: A chance of showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny, with a high near 97. Heat index values as high as 105. North wind 5 to 10 mph. Chance of precipitation is 30%.
Tonight

Tonight: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am.  Partly cloudy, with a low around 76. Northeast wind 5 to 10 mph becoming west after midnight.  Chance of precipitation is 20%.
Slight Chance
T-storms then
Slight Chance
Showers

Lo 76 °F
NWS forecast: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 76. Northeast wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 20%.
 NWS NWS Short Term Weather Forecast
Tonight

Tonight: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am.  Partly cloudy, with a low around 76. Northeast wind 5 to 10 mph becoming west after midnight.  Chance of precipitation is 20%.
Slight Chance
T-storms then
Slight Chance
Showers
Thursday

Thursday: A 20 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 95. Heat index values as high as 103. East northeast wind 5 to 10 mph.
Sunny then
Slight Chance
T-storms
Thursday
Night
Thursday Night: Mostly clear, with a low around 76. Northeast wind 5 to 10 mph becoming light east  after midnight.
Mostly Clear

Friday

Friday: Sunny, with a high near 95. East northeast wind 5 to 10 mph.
Sunny

Friday
Night
Friday Night: Mostly clear, with a low around 75. East northeast wind 5 to 10 mph becoming light and variable  in the evening.
Mostly Clear

Saturday

Saturday: Sunny, with a high near 97. Calm wind becoming northeast around 5 mph in the afternoon.
Sunny

Saturday
Night
Saturday Night: Mostly clear, with a low around 76. East wind 5 to 10 mph.
Mostly Clear

Sunday

Sunday: Sunny, with a high near 97. North wind around 5 mph.
Sunny

Lo 76 °F Hi 95 °F Lo 76 °F Hi 95 °F Lo 75 °F Hi 97 °F Lo 76 °F Hi 97 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.