Flood Watch FLOOD WATCH - Plano, Collin County, Texas
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Updated: @ 29-Sep-2026 9:35pm - next update at 9:40pm  
Summary / Temperature Wind Precipitation Outlook


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

85.6°F Colder 1.7°F than last hour.
Warm
Currently 85.6, Max: 95.2, Min: 73.4 Feels like:
88°F

24-hr
difference
3.9°FWarmer 3.9°F than yesterday at this time.
TEMP HIGH LOW
Today 95.2°F
3:41pm
73.4°F
7:31am
Yesterday 91.2°F
3:39pm
73.0°F
8:36am
Record 101°F
2011
46°F
1967
Normal 85°F
64°F
 Wind from SSE SSE
5.8
Gust:
9.9
Light Breeze

60-Min Avg: 2.3 mph
120-Min Avg: 6.9 mph
Max Gust: 23.1 mph 4:53pm
Month: 27.5 mph Sep 20
Today: 0.00 in
Yesterday: 0.02 in
Last
Rain:
9/28/2026
10:44 AM
September: 0.02 in
Last 7 Days: 0.02 in
Rain Season:1 22.56 in
Rain Days: 58 in 2026
1 rain day in September
Wednesday

Wednesday: Partly Sunny then Chance Showers And Thunderstorms
Partly Sunny then Chance Showers And T-Storms

Barometer Humidity/Dew Point Moon
Current: 29.778 inHg Rising 0.01 °F/hr
1-Hr Trend: Rising slowly
3-Hr Trend: Steady
High: 29.890  |  Low: 29.755
Humidity: 54 % Increased 8% since last hour.
Humidex: 98.5°F
Dewpoint: 67.0°F Increased 3°F since last hour.
Wetbulb: 73.4°F
Waning Gibbous
Waning Gibbous, Moon at 18 days in cycle
86%
Illuminated
UV Forecast Current Solar Energy
30-Sep-2026   High   7.5   
01-Oct-2026   High   7.2   
02-Oct-2026   High   7.2   
Energy: 0 W/m2 (0%)
High: 774 at  2:22pm
Apparent Temp: 88.0°F
Heat Index Cooling Degree Days Sun
Current: 88.2°F
Today: 100.3°F  2:31pm
Yesterday: 98.8°F
Last Week: 106.0°F
Record: 127.2°F   26-Aug-2023
Today: 13.9
September: 625.5
2026 to Date: 3318.2
Heating Degree Days
2026 to Date: 930.5
Sunlight Hours
Possible hours of Daylight
11:54 hrs:min
-00:02:01 Min
Almanac Irrigation Index5 Station All Time Records Fire Risk
Sunrise: 7:20am
Sunset: 7:14pm
Moonrise: 9:01pm
Moonset: 11:40am
Full Moon: September 26 2026
New Moon: 15:51 UTC October 10 2026
Updated at Midnight
Current: 0.27 in   
7-Days Rain: 0.02 in   
7-Days ET: 1.43 in   
7-Day: -1.41 in 1.41 in water in deficit of what evaporated in last 7 days.
September: -6.47 in 6.47 in water in deficit of what evaporated this month.
Irrigation System: Ready
Other Conditions
Air Density: 1.15 kg/m3
Cloud Height: 5001 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:97%
Chandler Burning Index
Chandler Burning Index: LOW
Currently:
16.4 at 9:35 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  -   Tonight's and Wednesday's Outlook
Tonight

Tonight: Partly Cloudy
Partly Cloudy

Lo 77 °F
NWS forecast: Partly cloudy, with a low around 77. South southeast wind 0 to 15 mph, with gusts as high as 25 mph.
Wednesday

Wednesday: Partly Sunny then Chance Showers And Thunderstorms
Partly Sunny then Chance Showers And T-Storms

Hi 95 °F
NWS forecast: A slight chance of rain showers between 1pm and 4pm, then a chance of showers and thunderstorms. Partly sunny. High near 95, with temperatures falling to around 93 in the afternoon. Heat index values as high as 101. South southeast wind 10 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
 NWS NWS Short Term Weather Forecast
Wednesday

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

Thursday: Showers And Thunderstorms
Showers And T-Storms
Thursday
Night
Thursday Night: Showers And Thunderstorms
Showers And T-Storms
Friday

Friday: Showers And Thunderstorms
Showers And T-Storms
Friday
Night
Friday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Saturday

Saturday: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Saturday
Night
Saturday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Hi 95 °F Lo 75 °F Hi 82 °F Lo 71 °F Hi 80 °F Lo 67 °F Hi 78 °F Lo 65 °F
US Radar & Infrared Satellite
US Radar National Infrared Satellite
Radar/Satellite images courtesy of Weather Underground.