S
M
T
W
T
F
S
30
77°
42°
31
84°
45°
1
85°
48°
2
85°
50°
3
84°
48°
4
84°
49°
5
82°
48°
6
83°
48°
7
83°
47°
8
82°
48°
9
83°
49°
10
84°
48°
11
82°
47°
12
73°
42°
13
81°
47°
14
81°
46°
15
76°
45°
16
82°
46°
17
82°
47°
18
81°
47°
19
81°
46°
20
80°
47°
21
79°
46°
22
80°
45°
23
73°
40°
24
66°
36°
25
66°
33°
26
67°
36°
27
72°
40°
28
75°
32°
29
71°
31°
30
65°
33°
1
68°
31°
2
69°
40°
3
72°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Moscow
Moscow's September 2026 forecast shows daily high temperatures ranging from 65° to 85°, with overnight lows between 31° and 50°. The average high for September is 78° with an average low of 43°. 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 Moscow. See also: October | November | December.