S
M
T
W
T
F
S
27
75°
34°
28
N/A
29
56°
39°
30
57°
37°
1
62°
34°
2
69°
37°
3
67°
34°
4
67°
35°
5
68°
36°
6
65°
35°
7
63°
34°
8
66°
34°
9
64°
33°
10
62°
31°
11
60°
32°
12
57°
24°
13
61°
30°
14
62°
31°
15
61°
30°
16
61°
31°
17
59°
30°
18
58°
30°
19
54°
29°
20
58°
29°
21
57°
28°
22
57°
28°
23
56°
27°
24
55°
28°
25
49°
26°
26
43°
26°
27
45°
23°
28
46°
26°
29
50°
25°
30
51°
23°
31
40°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Grand Lake
Grand Lake's October 2026 forecast shows daily high temperatures ranging from 40° to 69°, with overnight lows between 18° and 39°. The average high for October is 58° with an average low of 30°. 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 Grand Lake. See also: November | December | January.
