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Town of Johnstown, COJohnstown, CO 7-Day Night Weather Forecast
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Johnstown, CO Weather Forecast
Johnstown, CO Weather Forecast Date: 605 PM MDT Tue Sep 08 2026
The area/counties/county of: Northeast Weld County, including: Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Eaton, Fort Lupton, Greeley, Roggen, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, and Leader.or toggle through each period.
Tonight... Partly cloudy. Slight chance of thunderstorms in the evening. Some thunderstorms May produce gusty winds in the evening. Lows in the mid to upper 50s. Chance of precipitation 20%.
Wednesday... Mostly sunny. Highs near 80. North winds 10 to 15 mph with gusts up to 35 mph, becoming northeast with gusts up to 20 mph in the afternoon.
Wednesday Night... Mostly clear. Lows 51 to 57.
Thursday... Sunny. Highs near 90.
Thursday Night... Mostly clear. Lows 55 to 61. South winds 10 to 15 mph with gusts up to 30 mph.
Friday... Partly cloudy. Highs near 90.
Friday Night... Partly cloudy with a 20% chance of showers. Lows in the 50s.
Saturday... Partly cloudy with a 10% chance of showers. Highs 76 to 82.
Saturday Night... Partly cloudy with a 20% chance of showers. Windy. Lows in the 50s.
Sunday... Partly cloudy with a chance of showers and slight chance of thunderstorms. Highs 82 to 88. Chance of rain 30%.
Sunday Night... Partly cloudy with a chance of showers and slight chance of thunderstorms. Lows in the lower to mid 50s. Chance of rain 40%.
Monday... Partly cloudy. Highs near 80.
Monday Night... Partly cloudy with a 20% chance of thunderstorms. Lows near 50.
POP = Probability of Precipitation
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