S
M
T
W
T
F
S
30
75°
44°
31
86°
45°
1
80°
55°
2
75°
50°
3
71°
50°
4
68°
50°
5
74°
53°
6
80°
52°
7
78°
52°
8
80°
50°
9
79°
50°
10
82°
52°
11
82°
51°
12
76°
50°
13
76°
49°
14
80°
50°
15
79°
47°
16
82°
50°
17
71°
47°
18
71°
45°
19
71°
44°
20
72°
51°
21
73°
47°
22
75°
50°
23
72°
43°
24
68°
39°
25
68°
39°
26
69°
44°
27
77°
47°
28
77°
48°
29
78°
47°
30
78°
48°
1
77°
47°
2
77°
47°
3
76°
46°
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 68° to 82°, with overnight lows between 39° and 53°. The average high for September is 75° with an average low of 48°. 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.
