S
M
T
W
T
F
S
30
74°
44°
31
72°
42°
1
71°
45°
2
68°
45°
3
74°
46°
4
74°
42°
5
66°
41°
6
67°
44°
7
70°
42°
8
65°
42°
9
66°
39°
10
65°
42°
11
67°
34°
12
65°
38°
13
65°
36°
14
66°
40°
15
66°
40°
16
67°
37°
17
63°
33°
18
62°
36°
19
66°
37°
20
64°
36°
21
65°
34°
22
66°
38°
23
62°
39°
24
Hist. Avg.
68°
31°
25
Hist. Avg.
67°
31°
26
Hist. Avg.
67°
30°
27
Hist. Avg.
66°
30°
28
Hist. Avg.
66°
30°
29
Hist. Avg.
66°
29°
30
Hist. Avg.
65°
29°
1
Hist. Avg.
65°
28°
2
Hist. Avg.
65°
28°
3
Hist. Avg.
64°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Idaho Springs
Idaho Springs's September 2026 forecast shows daily high temperatures ranging from 62° to 74°, with overnight lows between 33° and 46°. The average high for September is 67° with an average low of 40°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Idaho Springs. See also: October | November | December.
