S
M
T
W
T
F
S
30
78°
43°
31
71°
44°
1
65°
40°
2
66°
41°
3
65°
44°
4
70°
45°
5
73°
48°
6
74°
42°
7
70°
37°
8
64°
38°
9
64°
37°
10
65°
38°
11
63°
35°
12
63°
36°
13
65°
39°
14
68°
43°
15
72°
39°
16
72°
36°
17
71°
39°
18
70°
41°
19
70°
35°
20
68°
41°
21
69°
43°
22
70°
46°
23
71°
46°
24
69°
43°
25
69°
34°
26
59°
37°
27
60°
38°
28
59°
31°
29
57°
29°
30
56°
30°
1
56°
33°
2
60°
34°
3
62°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Connemara
Connemara's September 2026 forecast shows daily high temperatures ranging from 56° to 78°, with overnight lows between 29° and 48°. The average high for September is 66° with an average low of 39°. 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 Connemara. See also: October | November | December.