10-Day Weather Forecast - Johnstown, CO

Mostly cloudy in the morning then becoming partly cloudy. Highs in the mid to upper 50s. Northwest winds 10 to 15 mph with gusts up to 20 mph in the afternoon.

Mostly clear. Lows 23 to 31.

Mostly sunny. Highs in the lower 60s. Northwest winds 10 to 15 mph with gusts up to 35 mph.

Mostly clear. Lows in the lower to mid 20s. North winds 10 to 15 mph with gusts up to 35 mph.

Partly cloudy. Cooler. Highs in the mid to upper 40s.

Mostly cloudy. Lows 17 to 23.

Mostly clear. Highs in the lower 50s. Lows 21 to 27.

Mostly clear. Highs in the lower 50s. Lows 21 to 27.

Mostly clear. Highs in the upper 50s. Lows 18 to 24.

Mostly clear. Highs in the upper 50s. Lows 18 to 24.

Mostly clear. Highs in the lower 50s. Lows 18 to 26.

Mostly clear. Highs in the lower 50s. Lows 18 to 26.

Partly cloudy. Highs in the upper 50s.

Mostly clear. Low temperature around 28F. Dew point will be around 13F with an average humidity of 42%. Winds will be 3 mph from the W.

Partly cloudy. High temperature around 49F. Dew point will be around 17F with an average humidity of 34%. Winds will be 3 mph from the NE.

Partly cloudy. Low temperature around 25F. Dew point will be around 17F with an average humidity of 57%. Winds will be 3 mph from the N.

Partly cloudy. High temperature around 43F. Dew point will be around 22F with an average humidity of 52%. Winds will be 4 mph from the N.

Partly cloudy. Low temperature around 18F. Dew point will be around 17F with an average humidity of 72%. Winds will be 3 mph from the N.