S
M
T
W
T
F
S
30
81°
60°
31
81°
50°
1
75°
49°
2
72°
52°
3
73°
58°
4
78°
53°
5
81°
48°
6
74°
48°
7
72°
49°
8
72°
56°
9
73°
55°
10
73°
51°
11
70°
50°
12
70°
48°
13
71°
45°
14
67°
46°
15
68°
50°
16
68°
55°
17
69°
54°
18
75°
54°
19
76°
51°
20
74°
50°
21
73°
46°
22
67°
44°
23
64°
42°
24
63°
41°
25
65°
43°
26
65°
44°
27
Hist. Avg.
68°
44°
28
Hist. Avg.
67°
44°
29
Hist. Avg.
67°
44°
30
Hist. Avg.
66°
43°
1
Hist. Avg.
66°
43°
2
Hist. Avg.
65°
42°
3
Hist. Avg.
65°
42°
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 63° to 81°, with overnight lows between 41° and 60°. The average high for September is 72° with an average low of 50°. 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.
