10-Day Weather Forecast - Portsmouth, IA

Partly sunny. Highs in the lower 70s. East winds around 5 mph, becoming southeast around 5 mph in the afternoon.

Mostly cloudy. Lows in the upper 40s. East winds 5 to 10 mph.

Mostly cloudy with a 20 percent chance of showers. Highs in the upper 60s.

Mostly cloudy with a 40 percent chance of showers. Lows in the upper 40s.

Mostly cloudy in the morning, then becoming partly sunny. A 20 percent chance of showers. Highs in the lower 60s.

Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the upper 40s. Chance of rain 40 percent.

Mostly sunny. A chance of showers in the morning. Highs in the mid 60s. Chance of rain 40 percent.

Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s.

Mostly sunny. Highs in the lower 60s.

Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the lower 40s. Chance of rain 40 percent.

Partly sunny in the morning, then becoming mostly cloudy. A 50 percent chance of showers. Highs in the upper 50s.

Mostly cloudy. Low temperature around 60F. Dew point will be around 55F with an average humidity of 82%. Winds will be 14 mph from the S.

Cloudy. High temperature around 73F. Dew point will be around 59F with an average humidity of 69%. Winds will be 15 mph from the S.

Mostly cloudy. Low temperature around 61F. Dew point will be around 54F with an average humidity of 71%. Winds will be 15 mph from the S.

Cloudy with a 26% chance for rain and thunderstorms. High temperature around 70F. Dew point will be around 55F with an average humidity of 64%. Winds will be 18 mph from the S.

Mostly cloudy. Low temperature around 62F. Dew point will be around 55F with an average humidity of 81%. Winds will be 17 mph from the S.