Monthly Historical AveragesUnion, WA
Average Temperature
High
8°
Feels 7
Low
2°
Feels 0
Average Precipitation
16 Days
184.9mm
4.3cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, January 11, 2026
Day
9°Feels 8
Wind
9 km/h S
Gust
14 km/h
Humidity
87%
P.O.P
90%
Rain
10-15 mm
Night
9°Feels 7
Wind
16 km/h SW
Gust
24 km/h
Humidity
93%
P.O.P
90%
Rain
~5 mm
Historical AveragesJan 11
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity