S
M
T
W
T
F
S
30
75°
44°
31
86°
45°
1
80°
55°
2
77°
54°
3
71°
52°
4
70°
48°
5
74°
45°
6
69°
45°
7
77°
53°
8
78°
49°
9
83°
46°
10
82°
55°
11
77°
56°
12
77°
55°
13
62°
47°
14
72°
45°
15
75°
47°
16
79°
46°
17
82°
50°
18
81°
51°
19
80°
50°
20
79°
49°
21
79°
50°
22
78°
51°
23
78°
48°
24
75°
44°
25
68°
48°
26
67°
49°
27
68°
43°
28
65°
40°
29
65°
40°
30
66°
38°
1
66°
47°
2
70°
46°
3
72°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Moses Lake
Moses Lake's September 2026 forecast shows daily high temperatures ranging from 62° to 82°, with overnight lows between 38° and 56°. The average high for September is 73° with an average low of 47°. 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 Moses Lake. See also: October | November | December.
