Monthly Historical AveragesDuncan, WA
Average Temperature
High
2°
Feels 0
Low
-4°
Feels -8
Average Precipitation
10 Days
21.5mm
12.5cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, January 11, 2026
Day
6°Feels 4
Wind
13 km/h SE
Gust
20 km/h
Humidity
61%
P.O.P
30%
Night
2°Feels -2
Wind
15 km/h SE
Gust
23 km/h
Humidity
80%
P.O.P
30%
Historical AveragesJan 11
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity