S
M
T
W
T
F
S
30
84°
65°
31
90°
65°
1
89°
61°
2
85°
68°
3
85°
67°
4
88°
67°
5
85°
66°
6
80°
66°
7
78°
65°
8
83°
61°
9
81°
57°
10
74°
54°
11
75°
58°
12
72°
51°
13
70°
52°
14
70°
50°
15
76°
51°
16
77°
53°
17
74°
55°
18
74°
52°
19
74°
55°
20
75°
54°
21
75°
54°
22
74°
52°
23
72°
53°
24
74°
53°
25
72°
51°
26
65°
44°
27
61°
40°
28
60°
39°
29
62°
40°
30
60°
38°
1
59°
46°
2
60°
47°
3
61°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Eau Claire
Eau Claire's September 2026 forecast shows daily high temperatures ranging from 59° to 88°, with overnight lows between 38° and 68°. The average high for September is 73° with an average low of 53°. 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 Eau Claire. See also: October | November | December.
