S
M
T
W
T
F
S
27
65°
33°
28
58°
36°
29
61°
41°
30
64°
43°
1
59°
39°
2
56°
45°
3
60°
45°
4
63°
44°
5
63°
45°
6
64°
42°
7
63°
33°
8
62°
30°
9
49°
31°
10
50°
35°
11
52°
36°
12
55°
39°
13
58°
42°
14
60°
36°
15
62°
37°
16
58°
34°
17
57°
28°
18
46°
26°
19
49°
25°
20
44°
32°
21
45°
35°
22
45°
33°
23
54°
27°
24
45°
22°
25
43°
25°
26
42°
26°
27
41°
24°
28
42°
22°
29
40°
22°
30
37°
27°
31
45°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mercer
Mercer's October 2026 forecast shows daily high temperatures ranging from 37° to 65°, with overnight lows between 22° and 45°. The average high for October is 53° 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 Mercer. See also: November | December | January.
