S
M
T
W
T
F
S
30
83°
49°
31
82°
47°
1
76°
41°
2
73°
45°
3
77°
44°
4
76°
44°
5
77°
47°
6
77°
46°
7
78°
45°
8
80°
47°
9
82°
43°
10
77°
48°
11
76°
45°
12
79°
47°
13
82°
47°
14
83°
46°
15
83°
47°
16
82°
46°
17
80°
44°
18
73°
41°
19
70°
37°
20
69°
36°
21
69°
35°
22
70°
35°
23
70°
40°
24
71°
38°
25
70°
35°
26
68°
34°
27
68°
34°
28
69°
38°
29
69°
39°
30
70°
36°
1
70°
38°
2
68°
35°
3
67°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Plumas
Plumas's September 2026 forecast shows daily high temperatures ranging from 67° to 83°, with overnight lows between 34° and 49°. The average high for September is 75° with an average low of 42°. 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 Plumas. See also: October | November | December.
