S
M
T
W
T
F
S
30
76°
45°
31
77°
48°
1
80°
51°
2
85°
54°
3
88°
55°
4
88°
50°
5
79°
49°
6
78°
52°
7
83°
49°
8
77°
45°
9
76°
50°
10
75°
47°
11
73°
46°
12
73°
44°
13
74°
43°
14
74°
44°
15
76°
50°
16
82°
47°
17
82°
45°
18
79°
48°
19
82°
50°
20
81°
51°
21
80°
47°
22
76°
45°
23
74°
46°
24
75°
43°
25
73°
46°
26
71°
41°
27
68°
47°
28
70°
46°
29
69°
41°
30
68°
42°
1
72°
47°
2
75°
45°
3
69°
43°
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 88°, with overnight lows between 41° and 55°. The average high for September is 77° 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.
