S
M
T
W
T
F
S
30
81°
65°
31
83°
64°
1
83°
57°
2
80°
57°
3
82°
62°
4
81°
63°
5
78°
62°
6
76°
62°
7
76°
61°
8
78°
54°
9
75°
53°
10
74°
62°
11
75°
60°
12
79°
61°
13
79°
61°
14
80°
60°
15
79°
60°
16
73°
52°
17
72°
56°
18
Hist. Avg.
74°
52°
19
Hist. Avg.
73°
51°
20
Hist. Avg.
73°
51°
21
Hist. Avg.
72°
51°
22
Hist. Avg.
72°
50°
23
Hist. Avg.
72°
50°
24
Hist. Avg.
71°
50°
25
Hist. Avg.
71°
49°
26
Hist. Avg.
70°
49°
27
Hist. Avg.
70°
49°
28
Hist. Avg.
70°
48°
29
Hist. Avg.
69°
48°
30
Hist. Avg.
69°
48°
1
Hist. Avg.
68°
47°
2
Hist. Avg.
68°
47°
3
Hist. Avg.
68°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Eau Claire
Eau Claire's September 2026 forecast shows daily high temperatures ranging from 72° to 83°, with overnight lows between 52° and 65°. The average high for September is 78° with an average low of 60°. 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.
