10-Day Weather Forecast - Portsmouth, IA

Mostly cloudy. A chance of sprinkles and flurries this afternoon. Not as cool with highs in the upper 30s. Southwest winds around 5 mph increasing to 15 to 20 mph with gusts up to 30 mph.

Partly cloudy in the evening then becoming mostly cloudy. A chance of sprinkles in the evening. A chance of flurries. Not as cool with lows in the upper 20s. Northwest winds 15 to 20 mph. Gusts up to 35 mph after midnight.

Partly sunny with a chance of flurries in the morning then mostly cloudy with a chance of snow in the afternoon. Windy with highs in the lower 30s. Temperature falling into the mid 20s in the afternoon. Northwest winds 20 to 30 mph with gusts up to 40 mph. Chance of snow 40 percent.

Mostly cloudy and blustery. Much colder with lows around 5 above. Northwest winds 15 to 25 mph. Gusts up to 40 mph in the evening. Wind chill values as low as 12 below after midnight.

Partly sunny. Much cooler with highs around 12. Northwest winds 15 to 20 mph with gusts up to 30 mph. Wind chill values as low as 13 below.

Partly cloudy. Cold with lows around zero. Wind chill values as low as 10 below.

Partly sunny. Not as cool with highs around 30. Wind chill values as low as 10 below in the morning.

Partly cloudy. Cold with lows zero to 5 above zero. Wind chill values as low as 10 below after midnight.

Mostly sunny. Cooler with highs around 20. Wind chill values as low as 15 below in the morning.

Partly cloudy in the evening then clearing. Cold with lows zero to 5 above zero.

Mostly sunny. Not as cool with highs in the upper 20s. Wind chill values as low as 5 below in the morning.

Partly cloudy in the evening then becoming mostly cloudy. Not as cool with lows 15 to 20.

Mostly sunny. Highs in the lower 30s.

Mostly clear. Low temperature around 20F. Dew point will be around 14F with an average humidity of 65%. Winds will be 1 mph from the SE.

Partly cloudy. High temperature around 29F. Dew point will be around 15F with an average humidity of 62%. Winds will be 1 mph from the N.

Mostly cloudy. Low temperature around 21F. Dew point will be around 16F with an average humidity of 70%. Winds will be 2 mph from the SE.

Cloudy. High temperature around 26F. Dew point will be around 16F with an average humidity of 68%. Winds will be 4 mph from the N.

Cloudy. Low temperature around 15F. Dew point will be around 12F with an average humidity of 73%. Winds will be 4 mph from the NE.