Monthly Historical AveragesPortsmouth, IA
Average Temperature
High
27°
Feels 28
Low
16°
Feels 16
Average Precipitation
12 Days
144.8mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, June 10, 2026
Day
32°Feels 34
Wind
32 km/h S
Gust
48 km/h
Humidity
41%
P.O.P
60%
Rain
1-3 mm
Night
19°Feels 19
Wind
19 km/h E
Gust
29 km/h
Humidity
94%
P.O.P
90%
Rain
10-15 mm
Historical AveragesJun 10
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity