S
M
T
W
T
F
S
30
94°
74°
31
95°
74°
1
92°
73°
2
93°
74°
3
90°
75°
4
91°
74°
5
90°
73°
6
90°
75°
7
92°
75°
8
92°
74°
9
91°
72°
10
94°
74°
11
94°
74°
12
93°
73°
13
93°
73°
14
92°
72°
15
88°
72°
16
89°
73°
17
88°
73°
18
87°
72°
19
88°
71°
20
87°
72°
21
89°
73°
22
87°
72°
23
86°
68°
24
91°
67°
25
86°
66°
26
86°
68°
27
89°
66°
28
Hist. Avg.
86°
66°
29
Hist. Avg.
86°
66°
30
Hist. Avg.
86°
66°
1
Hist. Avg.
86°
65°
2
Hist. Avg.
85°
65°
3
Hist. Avg.
85°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in University Place
University Place's September 2026 forecast shows daily high temperatures ranging from 86° to 95°, with overnight lows between 66° and 75°. The average high for September is 90° with an average low of 72°. 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 University Place. See also: October | November | December.