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 around 50.

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

Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the lower 50s. Chance of rain 40 percent.

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

Mostly clear in the evening, then becoming partly cloudy. A 20 percent chance of showers. Lows in the mid 40s.

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

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

Partly sunny with a 50 percent chance of showers. Highs in the mid 60s.

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.