S
M
T
W
T
F
S
30
82°
69°
31
83°
70°
1
87°
64°
2
82°
64°
3
82°
65°
4
81°
63°
5
81°
63°
6
82°
65°
7
84°
64°
8
82°
68°
9
85°
68°
10
81°
67°
11
82°
67°
12
84°
66°
13
84°
67°
14
85°
67°
15
85°
66°
16
84°
63°
17
82°
64°
18
76°
66°
19
82°
65°
20
83°
65°
21
80°
63°
22
81°
57°
23
Hist. Avg.
77°
58°
24
Hist. Avg.
76°
57°
25
Hist. Avg.
76°
57°
26
Hist. Avg.
75°
56°
27
Hist. Avg.
75°
56°
28
Hist. Avg.
75°
56°
29
Hist. Avg.
74°
55°
30
Hist. Avg.
74°
55°
1
Hist. Avg.
73°
54°
2
Hist. Avg.
73°
54°
3
Hist. Avg.
72°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Logan
Logan's September 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 57° and 70°. The average high for September is 83° with an average low of 65°. 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 Logan. See also: October | November | December.