10-Day Weather Forecast - Decatur, IA

Mostly cloudy. A slight chance of rain and snow in the afternoon. Highs in the mid 30s. South winds 5 to 10 mph. Chance of precipitation 20 percent.

Mostly cloudy. Lows in the lower 20s. Southeast winds around 5 mph becoming north with gusts up to 20 mph after midnight.

Mostly cloudy. Highs in the upper 20s. Northwest winds 10 to 15 mph.

Mostly cloudy. Lows around 10 above.

Mostly cloudy with a 20 percent chance of snow. Highs around 20.

Mostly cloudy in the evening then becoming partly cloudy. Cold with lows around zero.

Sunny. Highs 15 to 20.

Mostly clear in the evening then becoming partly cloudy. Lows around 10 above. Temperature rising to around 20 after midnight.

Mostly sunny. Not as cool with highs in the upper 30s.

Partly cloudy. Lows in the lower 20s.

Partly sunny. Highs in the lower 40s.

Partly cloudy. Low temperature around 35F. Dew point will be around 32F with an average humidity of 88%. Winds will be 8 mph from the SW.

Partly cloudy. High temperature around 50F. Dew point will be around 35F with an average humidity of 69%. Winds will be 7 mph from the W.

Partly cloudy. Low temperature around 36F. Dew point will be around 31F with an average humidity of 73%. Winds will be 7 mph from the SW.

Partly cloudy. High temperature around 47F. Dew point will be around 28F with an average humidity of 56%. Winds will be 5 mph from the W.

Partly cloudy. Low temperature around 34F. Dew point will be around 27F with an average humidity of 68%. Winds will be 3 mph from the SE.

Partly cloudy. High temperature around 50F. Dew point will be around 31F with an average humidity of 58%. Winds will be 4 mph from the S.

Partly cloudy. Low temperature around 37F. Dew point will be around 31F with an average humidity of 70%. Winds will be 2 mph from the S.