S
M
T
W
T
F
S
30
75°
43°
31
76°
47°
1
74°
46°
2
72°
43°
3
73°
44°
4
71°
39°
5
72°
51°
6
76°
50°
7
80°
47°
8
80°
49°
9
Hist. Avg.
69°
44°
10
Hist. Avg.
69°
44°
11
Hist. Avg.
68°
44°
12
Hist. Avg.
68°
44°
13
Hist. Avg.
67°
43°
14
Hist. Avg.
67°
43°
15
Hist. Avg.
67°
43°
16
Hist. Avg.
66°
42°
17
Hist. Avg.
66°
42°
18
Hist. Avg.
65°
42°
19
Hist. Avg.
65°
42°
20
Hist. Avg.
64°
41°
21
Hist. Avg.
64°
41°
22
Hist. Avg.
64°
41°
23
Hist. Avg.
63°
41°
24
Hist. Avg.
63°
40°
25
Hist. Avg.
62°
40°
26
Hist. Avg.
62°
40°
27
Hist. Avg.
61°
40°
28
Hist. Avg.
61°
39°
29
Hist. Avg.
60°
39°
30
Hist. Avg.
60°
39°
1
Hist. Avg.
60°
39°
2
Hist. Avg.
59°
38°
3
Hist. Avg.
59°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Coldstream
Coldstream's September 2026 forecast shows daily high temperatures ranging from 71° to 80°, with overnight lows between 39° and 51°. The average high for September is 75° with an average low of 46°. 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 Coldstream. See also: October | November | December.