S
M
T
W
T
F
S
30
96°
69°
31
96°
70°
1
95°
72°
2
96°
73°
3
94°
72°
4
88°
71°
5
93°
71°
6
94°
70°
7
94°
71°
8
93°
71°
9
94°
70°
10
94°
71°
11
93°
71°
12
92°
69°
13
92°
65°
14
85°
66°
15
84°
63°
16
85°
63°
17
88°
67°
18
90°
67°
19
84°
65°
20
83°
66°
21
91°
67°
22
90°
68°
23
90°
60°
24
85°
59°
25
81°
58°
26
82°
58°
27
88°
65°
28
88°
65°
29
89°
65°
30
Hist. Avg.
84°
61°
1
Hist. Avg.
84°
60°
2
Hist. Avg.
84°
60°
3
Hist. Avg.
83°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Reno
Reno's September 2026 forecast shows daily high temperatures ranging from 81° to 96°, with overnight lows between 58° and 73°. The average high for September is 90° with an average low of 67°. 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 Reno. See also: October | November | December.