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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 >

Hazardous Weather Conditions

Current conditions at

Fort Collins/Loveland - Northern Colorado Regional Airport (KFNL)

Lat: 40.45°NLon: 105.02°WElev: 5016ft.

Overcast

40°F

4°C

Humidity 79%
Wind Speed NE 12 mph
Barometer 30.19 in (1021.5 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 18 May 11:56 pm MDT
Extended Forecast for

Horsetooth Mountain CO

Frost Advisory until May 19, 08:00am
Click here for hazard details and duration
Frost Advisory
  •  
    Frost Advisory until May 19, 08:00am

    NOW until 8:00am Tue

    Frost Advisory

  • Overnight

    Low: 34 °F

    Slight Chance
    Snow Showers

  • Tuesday

    Tuesday: A slight chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 50. South southeast wind 3 to 8 mph. Chance of precipitation is 30%.

    High: 50 °F

    Partly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely, mainly before 9pm. Mostly cloudy, with a low around 37. South wind 3 to 7 mph. Chance of precipitation is 60%.

    Low: 37 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 59. South wind 5 to 8 mph becoming east in the afternoon. Chance of precipitation is 60%.

    High: 59 °F

    Mostly Cloudy
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 40. East southeast wind 5 to 8 mph becoming light and variable. Chance of precipitation is 30%.

    Low: 40 °F

    Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 65. Chance of precipitation is 70%.

    High: 65 °F

    Mostly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 42. Chance of precipitation is 70%.

    Low: 42 °F

    Showers
    Likely

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 66.

    High: 66 °F

    Slight Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Overnight
A 20 percent chance of snow showers before 3am. Mostly cloudy, with a steady temperature around 34. North northeast wind 3 to 5 mph.
Tuesday
A slight chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 50. South southeast wind 3 to 8 mph. Chance of precipitation is 30%.
Tuesday Night
Showers likely, mainly before 9pm. Mostly cloudy, with a low around 37. South wind 3 to 7 mph. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 59. South wind 5 to 8 mph becoming east in the afternoon. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 40. East southeast wind 5 to 8 mph becoming light and variable. Chance of precipitation is 30%.
Thursday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 65. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 42. Chance of precipitation is 70%.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 66.
Friday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 43.
Saturday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 51.
Memorial Day
Sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Horsetooth Mountain CO
 40.54°N 105.15°W (Elev. 5469 ft)
Last Update:
12:46 pm MDT May 18, 2026
Forecast Valid:
12am 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