S
M
T
W
T
F
S
27
65°
44°
28
66°
44°
29
64°
42°
30
64°
42°
1
68°
50°
2
68°
48°
3
65°
43°
4
63°
41°
5
62°
43°
6
60°
41°
7
61°
40°
8
60°
39°
9
60°
39°
10
61°
40°
11
61°
40°
12
63°
41°
13
64°
40°
14
65°
40°
15
66°
41°
16
67°
44°
17
67°
45°
18
64°
44°
19
63°
46°
20
64°
47°
21
57°
44°
22
56°
44°
23
58°
40°
24
56°
41°
25
58°
46°
26
61°
42°
27
55°
45°
28
56°
43°
29
56°
41°
30
57°
45°
31
61°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Gresham
Gresham's October 2026 forecast shows daily high temperatures ranging from 55° to 68°, with overnight lows between 37° and 50°. The average high for October is 62° with an average low of 43°. 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 Gresham. See also: November | December | January.