S
M
T
W
T
F
S
30
80°
53°
31
77°
51°
1
76°
51°
2
75°
52°
3
75°
53°
4
76°
52°
5
76°
52°
6
73°
58°
7
78°
57°
8
78°
52°
9
74°
51°
10
74°
49°
11
73°
50°
12
74°
50°
13
73°
52°
14
72°
50°
15
73°
55°
16
73°
50°
17
75°
48°
18
76°
48°
19
72°
55°
20
77°
52°
21
70°
44°
22
69°
43°
23
Hist. Avg.
74°
47°
24
Hist. Avg.
74°
46°
25
Hist. Avg.
73°
46°
26
Hist. Avg.
73°
46°
27
Hist. Avg.
72°
45°
28
Hist. Avg.
72°
45°
29
Hist. Avg.
71°
44°
30
Hist. Avg.
71°
44°
1
Hist. Avg.
70°
44°
2
Hist. Avg.
70°
43°
3
Hist. Avg.
70°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Modoc
Modoc's September 2026 forecast shows daily high temperatures ranging from 69° to 80°, with overnight lows between 43° and 58°. The average high for September is 75° with an average low of 51°. 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 Modoc. See also: October | November | December.
