S
M
T
W
T
F
S
27
69°
32°
28
72°
31°
29
77°
33°
30
79°
34°
1
81°
40°
2
82°
37°
3
84°
35°
4
84°
36°
5
84°
38°
6
85°
38°
7
86°
38°
8
85°
41°
9
82°
43°
10
56°
38°
11
56°
31°
12
60°
29°
13
67°
30°
14
67°
28°
15
66°
30°
16
69°
32°
17
66°
32°
18
67°
29°
19
67°
32°
20
69°
31°
21
63°
29°
22
67°
34°
23
66°
34°
24
65°
34°
25
65°
33°
26
64°
34°
27
64°
33°
28
63°
33°
29
63°
32°
30
62°
33°
31
52°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Merrill
Merrill's October 2026 forecast shows daily high temperatures ranging from 52° to 85°, with overnight lows between 28° and 43°. The average high for October is 65° with an average low of 33°. 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 Merrill. See also: November | December | January.