S
M
T
W
T
F
S
27
90°
70°
28
89°
70°
29
90°
69°
30
90°
69°
1
88°
70°
2
89°
64°
3
86°
65°
4
85°
64°
5
84°
63°
6
85°
65°
7
87°
67°
8
83°
67°
9
83°
66°
10
Hist. Avg.
85°
61°
11
Hist. Avg.
85°
61°
12
Hist. Avg.
84°
60°
13
Hist. Avg.
84°
60°
14
Hist. Avg.
84°
60°
15
Hist. Avg.
84°
59°
16
Hist. Avg.
84°
59°
17
Hist. Avg.
83°
59°
18
Hist. Avg.
83°
58°
19
Hist. Avg.
83°
58°
20
Hist. Avg.
82°
58°
21
Hist. Avg.
82°
57°
22
Hist. Avg.
82°
57°
23
Hist. Avg.
82°
57°
24
Hist. Avg.
82°
56°
25
Hist. Avg.
81°
56°
26
Hist. Avg.
81°
56°
27
Hist. Avg.
81°
55°
28
Hist. Avg.
81°
55°
29
Hist. Avg.
80°
55°
30
Hist. Avg.
80°
55°
31
Hist. Avg.
80°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Mercer
Mercer's October 2026 forecast shows daily high temperatures ranging from 83° to 90°, with overnight lows between 63° and 70°. The average high for October is 87° with an average low of 67°. 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.
