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Green Mountain, CO

75°F
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Green Mountain, CO Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Today Hourly 10-Day Radar MinuteCast®

Monthly

Air Quality Health & Activities
2
Heat Advisory

October

January February March April May June July August September October November December

2026

2025 2026 2027

10-Day

S
M
T
W
T
F
S
27
Times of clouds and sun
77°
45°
28
Partly sunny, showers around
71°
38°
29
Overcast with showery rains
65°
37°
30
Cloudy with occasional rain
63°
38°
1
A couple of afternoon showers
65°
41°
2
Mostly sunny
70°
45°
3
Sunshine and a few clouds
74°
46°
4
A couple of morning showers
73°
44°
5
Sunshine and some clouds
72°
39°
6
A little afternoon rain
69°
44°
7
Mostly cloudy
63°
48°
8
Partly sunny and warmer
74°
46°
9
Clouds and sunshine
72°
36°
10
A few showers in the morning
63°
34°
11
Partly sunny
61°
33°
12
Plenty of sunshine
64°
34°
13
Plenty of sun
61°
43°
14
Partly sunny
66°
41°
15
Mostly sunny
70°
32°
16
Cooler with a touch of rain
61°
36°
17
Times of clouds and sun
58°
38°
18
Showers around in the p.m.
63°
34°
19
A few afternoon showers
63°
38°
20
Plenty of sunshine
62°
43°
21
Mostly cloudy, afternoon rain
67°
31°
22
Rather cloudy, showers around
58°
27°
23
Rain and sleet in the morning
55°
27°
24
Snow, then rain in the a.m.
52°
28°
25
Partly sunny
53°
25°
26
A couple of afternoon showers
53°
29°
27
Sunny to partly cloudy
54°
33°
28
Sunny spells
55°
27°
29
Sunny spells, showers around
54°
26°
30
Mostly sunny
53°
29°
31
Plenty of sunshine
54°
32°

Temperature Graph

°F
80° 68° 56° 44° 32° Oct
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo

October Weather in Green Mountain

Green Mountain's October 2026 forecast shows daily high temperatures ranging from 52° to 77°, with overnight lows between 25° and 48°. The average high for October is 63° with an average low of 36°. 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 Green Mountain. See also: November | December | January.

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Weather Near Green Mountain:

  • Boulder, CO
  • Denver, CO
  • Fort Collins, CO
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