S
M
T
W
T
F
S
30
47°
37°
31
48°
37°
1
40°
36°
2
45°
35°
3
43°
41°
4
45°
44°
5
48°
46°
6
49°
44°
7
47°
42°
8
49°
44°
9
46°
44°
10
48°
45°
11
47°
40°
12
44°
40°
13
45°
39°
14
47°
43°
15
44°
42°
16
43°
37°
17
47°
40°
18
48°
41°
19
47°
40°
20
46°
40°
21
45°
39°
22
44°
39°
23
45°
40°
24
45°
40°
25
44°
39°
26
45°
39°
27
44°
38°
28
44°
38°
29
43°
37°
30
41°
37°
1
42°
36°
2
40°
35°
3
40°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Diomede
Diomede's September 2026 forecast shows daily high temperatures ranging from 40° to 49°, with overnight lows between 35° and 46°. The average high for September is 45° 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 Diomede. See also: October | November | December.
