S
M
T
W
T
F
S
27
61°
41°
28
62°
32°
29
59°
33°
30
59°
35°
1
60°
40°
2
68°
43°
3
69°
42°
4
69°
42°
5
68°
41°
6
70°
42°
7
69°
42°
8
68°
43°
9
69°
41°
10
68°
42°
11
66°
38°
12
55°
30°
13
52°
29°
14
52°
30°
15
Hist. Avg.
58°
33°
16
Hist. Avg.
57°
33°
17
Hist. Avg.
57°
33°
18
Hist. Avg.
56°
33°
19
Hist. Avg.
56°
33°
20
Hist. Avg.
55°
32°
21
Hist. Avg.
55°
32°
22
Hist. Avg.
54°
32°
23
Hist. Avg.
54°
32°
24
Hist. Avg.
53°
32°
25
Hist. Avg.
52°
32°
26
Hist. Avg.
52°
32°
27
Hist. Avg.
51°
31°
28
Hist. Avg.
51°
31°
29
Hist. Avg.
50°
31°
30
Hist. Avg.
50°
31°
31
Hist. Avg.
49°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Sunnyside
Sunnyside's October 2026 forecast shows daily high temperatures ranging from 52° to 70°, with overnight lows between 29° and 43°. The average high for October is 64° with an average low of 38°. 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 Sunnyside. See also: November | December | January.