S
M
T
W
T
F
S
27
77°
51°
28
76°
43°
29
74°
43°
30
65°
48°
1
64°
45°
2
66°
49°
3
64°
44°
4
68°
45°
5
71°
51°
6
71°
51°
7
70°
50°
8
69°
48°
9
70°
44°
10
66°
39°
11
61°
46°
12
62°
38°
13
69°
37°
14
58°
38°
15
60°
45°
16
66°
43°
17
66°
39°
18
62°
43°
19
59°
36°
20
60°
37°
21
55°
36°
22
57°
37°
23
56°
36°
24
66°
43°
25
64°
41°
26
64°
44°
27
Hist. Avg.
62°
38°
28
Hist. Avg.
62°
38°
29
Hist. Avg.
61°
37°
30
Hist. Avg.
61°
37°
31
Hist. Avg.
61°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Mendham
Mendham's October 2026 forecast shows daily high temperatures ranging from 55° to 77°, with overnight lows between 36° and 51°. The average high for October is 65° 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 Mendham. See also: November | December | January.