National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorm and Heavy Rainfall Threat Tonight; Heat Continues on Tuesday Across the Eastern U.S.

Severe weather and flash flooding threats continue across the Central Plains and Midwest into tonight. Very large hail, strong tornadoes and damaging winds are expected. An early season heat wave will continue to challenge temperature records across the eastern U.S. through Wednesday. Read More >

Current conditions at

Granby-Grand County Airport (KGNB)

Lat: 40.09°NLon: 105.92°WElev: 8207ft.

Light Snow

32°F

0°C

Humidity 96%
Wind Speed NW 3 mph
Barometer 30.20 in
Dewpoint 31°F (-1°C)
Visibility 2.50 mi
Last update 19 May 1:15 am MDT
Extended Forecast for

Granby CO

  • Overnight

    Overnight: A 30 percent chance of snow showers, mainly before 3am. Mostly cloudy, with a low around 25. Calm wind. Little or no snow accumulation expected.

    Low: 25 °F

    Chance Snow
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 51. Calm wind becoming west around 6 mph.

    High: 51 °F

    Partly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of rain showers before midnight, then a chance of rain and snow showers between midnight and 3am, then a slight chance of snow showers after 3am. Cloudy, then gradually becoming partly cloudy, with a low around 26. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 26 °F

    Chance
    Showers then
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 56. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 17 mph. Chance of precipitation is 40%.

    High: 56 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 24. Northwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 15 mph.

    Low: 24 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Rain showers likely before midnight, then a chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a low around 27. Chance of precipitation is 60%.

    Low: 27 °F

    Showers
    Likely then
    Chance
    Rain/Snow

  • Friday

    Friday: A slight chance of rain and snow showers before noon, then a chance of rain showers. Some thunder is also possible. Partly sunny, with a high near 61.

    High: 61 °F

    Slight Chance
    Rain/Snow
    then Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 28.

    Low: 28 °F

    Slight Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of snow showers, mainly before 3am. Mostly cloudy, with a low around 25. Calm wind. Little or no snow accumulation expected.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 51. Calm wind becoming west around 6 mph.
Tuesday Night
A chance of rain showers before midnight, then a chance of rain and snow showers between midnight and 3am, then a slight chance of snow showers after 3am. Cloudy, then gradually becoming partly cloudy, with a low around 26. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. Little or no snow accumulation expected.
Wednesday
A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 56. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 17 mph. Chance of precipitation is 40%.
Wednesday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 24. Northwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 15 mph.
Thursday
A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 60.
Thursday Night
Rain showers likely before midnight, then a chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a low around 27. Chance of precipitation is 60%.
Friday
A slight chance of rain and snow showers before noon, then a chance of rain showers. Some thunder is also possible. Partly sunny, with a high near 61.
Friday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 28.
Saturday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 66.
Saturday Night
Mostly clear, with a low around 30.
Sunday
Sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 32.
Memorial Day
Sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Granby CO
 40.09°N 105.95°W (Elev. 7999 ft)
Last Update:
12:46 am MDT May 19, 2026
Forecast Valid:
1am MDT May 19, 2026-6pm MDT May 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation