S
M
T
W
T
F
S
30
71°
50°
31
75°
56°
1
67°
54°
2
68°
57°
3
67°
54°
4
69°
53°
5
71°
52°
6
73°
52°
7
71°
58°
8
74°
53°
9
80°
53°
10
69°
54°
11
67°
53°
12
64°
53°
13
61°
54°
14
67°
56°
15
67°
53°
16
72°
54°
17
76°
52°
18
67°
55°
19
63°
50°
20
69°
49°
21
65°
49°
22
69°
54°
23
66°
53°
24
61°
53°
25
61°
51°
26
63°
45°
27
64°
49°
28
69°
57°
29
66°
48°
30
65°
49°
1
70°
52°
2
70°
51°
3
66°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in University Place
University Place's September 2026 forecast shows daily high temperatures ranging from 65° to 70°, with overnight lows between 48° and 57°. The average high for September is 68° with an average low of 51°. 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.