S
M
T
W
T
F
S
30
85°
65°
31
84°
69°
1
92°
67°
2
89°
70°
3
78°
65°
4
79°
68°
5
79°
63°
6
79°
51°
7
79°
51°
8
80°
53°
9
82°
69°
10
78°
50°
11
77°
45°
12
86°
52°
13
74°
46°
14
70°
40°
15
74°
56°
16
73°
60°
17
66°
49°
18
71°
52°
19
58°
52°
20
69°
51°
21
62°
47°
22
65°
47°
23
63°
49°
24
68°
48°
25
70°
47°
26
68°
45°
27
69°
49°
28
70°
48°
29
68°
46°
30
66°
42°
1
70°
48°
2
61°
46°
3
60°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Clare
Clare's September 2026 forecast shows daily high temperatures ranging from 58° to 71°, with overnight lows between 42° and 52°. The average high for September is 66° with an average low of 48°. 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 Clare. See also: October | November | December.