S
M
T
W
T
F
S
30
63°
50°
31
73°
43°
1
73°
46°
2
77°
41°
3
79°
43°
4
82°
37°
5
84°
41°
6
84°
45°
7
81°
46°
8
82°
41°
9
81°
36°
10
81°
32°
11
81°
32°
12
79°
39°
13
84°
37°
14
77°
52°
15
77°
46°
16
68°
46°
17
63°
52°
18
73°
45°
19
69°
45°
20
68°
40°
21
69°
45°
22
71°
47°
23
66°
45°
24
67°
49°
25
65°
48°
26
66°
47°
27
63°
44°
28
64°
43°
29
64°
43°
30
61°
44°
1
60°
43°
2
62°
34°
3
59°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Idaho Springs
Idaho Springs's September 2026 forecast shows daily high temperatures ranging from 59° to 71°, with overnight lows between 34° and 49°. The average high for September is 65° 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 September weather will actually feel in Idaho Springs. See also: October | November | December.
