S
M
T
W
T
F
S
27
N/A
28
71°
41°
29
70°
52°
30
73°
55°
1
80°
49°
2
78°
51°
3
81°
53°
4
82°
50°
5
80°
52°
6
79°
53°
7
80°
46°
8
81°
50°
9
66°
41°
10
61°
41°
11
67°
40°
12
69°
38°
13
67°
47°
14
68°
43°
15
70°
44°
16
71°
46°
17
67°
44°
18
66°
43°
19
68°
44°
20
64°
43°
21
61°
40°
22
63°
38°
23
64°
39°
24
62°
40°
25
62°
39°
26
61°
38°
27
62°
40°
28
61°
41°
29
60°
38°
30
59°
42°
31
52°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Forest Grove
Forest Grove's October 2026 forecast shows daily high temperatures ranging from 52° to 81°, with overnight lows between 38° and 50°. The average high for October is 65° with an average low of 42°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Forest Grove. See also: November | December | January.