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

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

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

Overcast

62°F

17°C

Humidity 96%
Wind Speed Calm
Barometer 30.37 in (1023.0 mb)
Dewpoint 61°F (16°C)
Visibility 8.00 mi
Last update 16 Aug 4:56 am MDT
Extended Forecast for

Johnstown CO

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Some of the storms could be severe. Patchy fog before 9am. Otherwise, partly sunny, with a high near 83. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 83 °F

    Patchy Fog
    then Severe
    Thunderstorms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 56. East wind 5 to 7 mph becoming light and variable in the evening. Winds could gust as high as 15 mph.

    Low: 56 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 89. Calm wind becoming east around 6 mph in the afternoon.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57. Southeast wind around 6 mph becoming light and variable.

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91. Light and variable wind becoming northeast 5 to 10 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 91 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.

    Low: 58 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 86. Chance of precipitation is 30%.

    High: 86 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Some of the storms could be severe. Patchy fog before 9am. Otherwise, partly sunny, with a high near 83. Calm wind becoming east southeast around 6 mph in the afternoon.
Tonight
A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 56. East wind 5 to 7 mph becoming light and variable in the evening. Winds could gust as high as 15 mph.
Monday
Sunny, with a high near 89. Calm wind becoming east around 6 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 57. Southeast wind around 6 mph becoming light and variable.
Tuesday
Mostly sunny, with a high near 91. Light and variable wind becoming northeast 5 to 10 mph in the afternoon. Winds could gust as high as 22 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 86. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 56.
Thursday
Sunny, with a high near 89.
Thursday Night
Mostly clear, with a low around 58.
Friday
Sunny, with a high near 91.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 59.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90.
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ABOUT THIS FORECAST

 
Point Forecast:
Johnstown CO
 40.33°N 104.93°W (Elev. 4846 ft)
Last Update:
12:46 am MDT Aug 16, 2026
Forecast Valid:
5am MDT Aug 16, 2026-6pm MDT Aug 22, 2026
 
Forecast Discussion
 
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Additional Resources

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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