S
M
T
W
T
F
S
30
99°
66°
31
99°
70°
1
99°
70°
2
98°
70°
3
96°
70°
4
98°
71°
5
102°
72°
6
103°
71°
7
102°
72°
8
100°
72°
9
98°
71°
10
98°
71°
11
93°
74°
12
100°
71°
13
98°
69°
14
99°
71°
15
99°
70°
16
97°
72°
17
100°
72°
18
99°
63°
19
98°
66°
20
94°
68°
21
90°
69°
22
87°
63°
23
86°
63°
24
86°
63°
25
82°
60°
26
81°
62°
27
83°
63°
28
84°
61°
29
87°
61°
30
88°
63°
1
82°
57°
2
80°
63°
3
84°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pullman
Pullman's September 2026 forecast shows daily high temperatures ranging from 80° to 99°, with overnight lows between 57° and 69°. The average high for September is 87° with an average low of 63°. 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 Pullman. See also: October | November | December.
