S
M
T
W
T
F
S
30
80°
31°
31
79°
33°
1
81°
38°
2
86°
40°
3
86°
31°
4
77°
37°
5
78°
34°
6
82°
29°
7
78°
30°
8
76°
33°
9
81°
34°
10
83°
35°
11
83°
39°
12
84°
40°
13
85°
39°
14
85°
30°
15
80°
32°
16
77°
31°
17
74°
33°
18
74°
37°
19
80°
35°
20
81°
35°
21
81°
36°
22
77°
35°
23
70°
25°
24
69°
26°
25
68°
25°
26
66°
27°
27
67°
31°
28
69°
33°
29
74°
27°
30
70°
26°
1
Hist. Avg.
71°
30°
2
Hist. Avg.
71°
30°
3
Hist. Avg.
70°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Truckee
Truckee's September 2026 forecast shows daily high temperatures ranging from 66° to 86°, with overnight lows between 25° and 40°. The average high for September is 78° with an average low of 33°. 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 Truckee. See also: October | November | December.
