S
M
T
W
T
F
S
27
67°
45°
28
66°
45°
29
69°
46°
30
69°
48°
1
68°
47°
2
67°
49°
3
61°
48°
4
58°
48°
5
67°
43°
6
58°
38°
7
58°
38°
8
60°
46°
9
65°
46°
10
63°
41°
11
64°
47°
12
60°
46°
13
64°
47°
14
65°
47°
15
65°
46°
16
64°
46°
17
64°
45°
18
63°
46°
19
61°
45°
20
59°
44°
21
55°
44°
22
61°
43°
23
58°
43°
24
57°
42°
25
53°
38°
26
51°
34°
27
56°
41°
28
56°
42°
29
58°
41°
30
58°
40°
31
55°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Monadnock State Park
Monadnock State Park's October 2026 forecast shows daily high temperatures ranging from 51° to 69°, with overnight lows between 34° and 49°. The average high for October is 61° with an average low of 44°. 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 Monadnock State Park. See also: November | December | January.