S
M
T
W
T
F
S
27
46°
34°
28
37°
34°
29
37°
32°
30
34°
32°
1
39°
30°
2
52°
34°
3
46°
32°
4
50°
36°
5
52°
37°
6
52°
37°
7
48°
34°
8
46°
36°
9
48°
34°
10
43°
32°
11
50°
34°
12
46°
30°
13
39°
28°
14
30°
21°
15
23°
14°
16
32°
14°
17
37°
28°
18
39°
30°
19
37°
30°
20
34°
28°
21
41°
32°
22
37°
32°
23
41°
27°
24
31°
23°
25
36°
23°
26
30°
24°
27
33°
25°
28
33°
24°
29
41°
25°
30
41°
27°
31
38°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Rocky Mountain National Park
Rocky Mountain National Park's October 2026 forecast shows daily high temperatures ranging from 30° to 41°, with overnight lows between 23° and 27°. The average high for October is 35° with an average low of 24°. 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 Rocky Mountain National Park. See also: November | December | January.