Monthly Historical AveragesPortland, TN
Average Temperature
High
25°
Feels 26
Low
14°
Feels 13
Average Precipitation
12 Days
141.6mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, May 20, 2026
Day
25°Feels 26
Wind
11 km/h S
Gust
16 km/h
Humidity
76%
P.O.P
90%
Rain
~5 mm
Night
16°Feels 15
Wind
16 km/h NE
Gust
24 km/h
Humidity
99%
P.O.P
80%
Rain
~1 mm
Historical AveragesMay 20
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity