S
M
T
W
T
F
S
30
80°
64°
31
81°
63°
1
83°
62°
2
75°
57°
3
75°
57°
4
76°
59°
5
78°
58°
6
82°
62°
7
82°
63°
8
83°
63°
9
82°
62°
10
82°
62°
11
81°
61°
12
82°
63°
13
83°
63°
14
80°
54°
15
70°
55°
16
72°
56°
17
75°
55°
18
70°
52°
19
71°
48°
20
70°
51°
21
78°
55°
22
78°
57°
23
77°
48°
24
70°
49°
25
71°
51°
26
75°
56°
27
75°
55°
28
76°
47°
29
67°
44°
30
66°
47°
1
66°
49°
2
73°
48°
3
75°
52°
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 66° to 83°, with overnight lows between 44° and 64°. The average high for September is 76° with an average low of 56°. 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.