S
M
T
W
T
F
S
30
84°
41°
31
90°
42°
1
85°
57°
2
75°
48°
3
79°
53°
4
72°
48°
5
78°
42°
6
79°
43°
7
75°
33°
8
84°
36°
9
90°
39°
10
88°
46°
11
90°
48°
12
88°
47°
13
73°
35°
14
77°
36°
15
81°
39°
16
84°
44°
17
87°
41°
18
89°
47°
19
86°
48°
20
84°
49°
21
82°
45°
22
81°
42°
23
77°
44°
24
86°
45°
25
70°
42°
26
72°
44°
27
74°
42°
28
70°
42°
29
72°
43°
30
74°
42°
1
80°
43°
2
80°
43°
3
79°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Winnemucca
Winnemucca's September 2026 forecast shows daily high temperatures ranging from 70° to 90°, with overnight lows between 35° and 49°. The average high for September is 80° with an average low of 43°. 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 Winnemucca. See also: October | November | December.