S
M
T
W
T
F
S
30
92°
65°
31
89°
66°
1
88°
66°
2
90°
69°
3
89°
69°
4
91°
68°
5
90°
69°
6
91°
70°
7
92°
68°
8
90°
64°
9
87°
63°
10
88°
64°
11
87°
64°
12
89°
63°
13
Hist. Avg.
85°
64°
14
Hist. Avg.
84°
63°
15
Hist. Avg.
84°
63°
16
Hist. Avg.
84°
63°
17
Hist. Avg.
84°
62°
18
Hist. Avg.
83°
62°
19
Hist. Avg.
83°
61°
20
Hist. Avg.
82°
61°
21
Hist. Avg.
82°
60°
22
Hist. Avg.
82°
60°
23
Hist. Avg.
81°
60°
24
Hist. Avg.
81°
59°
25
Hist. Avg.
81°
59°
26
Hist. Avg.
80°
58°
27
Hist. Avg.
80°
58°
28
Hist. Avg.
80°
57°
29
Hist. Avg.
79°
57°
30
Hist. Avg.
79°
56°
1
Hist. Avg.
79°
56°
2
Hist. Avg.
78°
55°
3
Hist. Avg.
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Collbran
Collbran's September 2026 forecast shows daily high temperatures ranging from 87° to 92°, with overnight lows between 63° and 70°. The average high for September is 90° with an average low of 66°. 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 Collbran. See also: October | November | December.