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

Hazardous Weather Conditions

Current conditions at

Granby-Grand County Airport (KGNB)

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

Light Snow

33°F

1°C

Humidity 97%
Wind Speed S 6 mph
Barometer 29.90 in
Dewpoint 32°F (0°C)
Visibility 0.75 mi
Wind Chill27°F (-3°C)
Last update 18 May 1:15 pm MDT
Extended Forecast for

2 Miles ENE LONG'S PEAK CO

Winter Storm Warning May 18, 01:31pm until May 18, 09:00pm
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning May 18, 01:31pm until May 18, 09:00pm

    NOW until 9:00pm Mon

    Winter Storm Warning

  • This Afternoon

    High: 27 °F

    Heavy Snow

  • Tonight

    Tonight: Snow showers, mainly before midnight. Patchy fog before midnight. Low around 22. East northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 22 °F

    Snow Showers
    and Patchy
    Fog then
    Chance Snow
    Showers

  • Tuesday

    Tuesday: Snow showers, mainly after 3pm. Some thunder is also possible. High near 32. Light and variable wind becoming east southeast 5 to 8 mph in the morning. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 32 °F

    Slight Chance
    Snow Showers
    then Snow
    Showers

  • Tuesday Night

    Tuesday Night: Snow showers, mainly before 9pm. Low around 26. East southeast wind around 5 mph becoming calm. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 26 °F

    Snow Showers
    then Chance
    Snow Showers

  • Wednesday

    Wednesday: Snow showers before 3pm, then snow showers, possibly mixed with rain. Some thunder is also possible. High near 43. South southwest wind 5 to 7 mph becoming light and variable in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 80%.

    High: 43 °F

    Slight Chance
    Snow Showers
    then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: A slight chance of rain and snow showers before 9pm, then a slight chance of snow showers between 9pm and midnight. Some thunder is also possible. Partly cloudy, with a low around 28. Chance of precipitation is 20%.

    Low: 28 °F

    Slight Chance
    Rain/Snow
    then Partly
    Cloudy

  • Thursday

    Thursday: Rain and snow showers likely after noon. Some thunder is also possible. Partly sunny, with a high near 48. Chance of precipitation is 70%.

    High: 48 °F

    Mostly Sunny
    then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Rain showers likely before 9pm, then rain and snow showers likely between 9pm and 3am, then a chance of snow showers after 3am. Some thunder is also possible. Mostly cloudy, with a low around 30.

    Low: 30 °F

    Rain/Snow
    Likely

Detailed Forecast

This Afternoon
Snow showers. The snow could be heavy at times. Some thunder is also possible. Steady temperature around 27. East northeast wind 6 to 8 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 8 to 12 inches possible.
Tonight
Snow showers, mainly before midnight. Patchy fog before midnight. Low around 22. East northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Tuesday
Snow showers, mainly after 3pm. Some thunder is also possible. High near 32. Light and variable wind becoming east southeast 5 to 8 mph in the morning. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Tuesday Night
Snow showers, mainly before 9pm. Low around 26. East southeast wind around 5 mph becoming calm. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Wednesday
Snow showers before 3pm, then snow showers, possibly mixed with rain. Some thunder is also possible. High near 43. South southwest wind 5 to 7 mph becoming light and variable in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 80%.
Wednesday Night
A slight chance of rain and snow showers before 9pm, then a slight chance of snow showers between 9pm and midnight. Some thunder is also possible. Partly cloudy, with a low around 28. Chance of precipitation is 20%.
Thursday
Rain and snow showers likely after noon. Some thunder is also possible. Partly sunny, with a high near 48. Chance of precipitation is 70%.
Thursday Night
Rain showers likely before 9pm, then rain and snow showers likely between 9pm and 3am, then a chance of snow showers after 3am. Some thunder is also possible. Mostly cloudy, with a low around 30.
Friday
A slight chance of snow showers before noon, then a chance of rain and snow showers between noon and 3pm, then a chance of rain showers after 3pm. Some thunder is also possible. Partly sunny, with a high near 49.
Friday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 32.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 56.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE LONG'S PEAK CO
 40.27°N 105.56°W (Elev. 9711 ft)
Last Update:
12:46 pm MDT May 18, 2026
Forecast Valid:
1pm MDT May 18, 2026-6pm MDT May 24, 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