The Weather Network
Weather
Maps
News
Video
|
Welcome
Monthly
⋮
Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Forest Grove, BC
Exceptional El Niño dominates this fall
Content continues below
September
Average Temperature
High
17°
Feels 17
Low
4°
Feels 2
Average Precipitation
10 Days
Rain amount
42.6mm
Snow amount
0.5cm
Content continues below
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
23°
19
22°
20
23°
21
23°
22
20°
23
17°
24
16°
25
16°
26
14°
27
15°
28
14°
29
14°
30
14°
Forecast
Friday, September 18, 2026
Day
23°
Feels 23
Wind
4 km/h E
Gust
6 km/h
Humidity
29%
P.O.P
10%
Night
8°
Feels 7
Wind
7 km/h E
Gust
11 km/h
Humidity
81%
P.O.P
20%
Historical Averages
Sep 18
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.