S
M
T
W
T
F
S
30
67°
53°
31
68°
51°
1
66°
51°
2
65°
50°
3
66°
51°
4
65°
49°
5
65°
47°
6
64°
46°
7
65°
47°
8
65°
50°
9
64°
49°
10
65°
50°
11
64°
50°
12
61°
49°
13
64°
50°
14
65°
50°
15
64°
49°
16
64°
50°
17
63°
49°
18
60°
49°
19
61°
50°
20
61°
48°
21
Hist. Avg.
58°
45°
22
Hist. Avg.
57°
45°
23
Hist. Avg.
57°
45°
24
Hist. Avg.
57°
45°
25
Hist. Avg.
57°
45°
26
Hist. Avg.
56°
45°
27
Hist. Avg.
56°
44°
28
Hist. Avg.
56°
44°
29
Hist. Avg.
56°
44°
30
Hist. Avg.
56°
44°
1
Hist. Avg.
55°
44°
2
Hist. Avg.
55°
44°
3
Hist. Avg.
55°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Keswick
Keswick's September 2026 forecast shows daily high temperatures ranging from 60° to 68°, with overnight lows between 46° and 53°. The average high for September is 64° with an average low of 49°. 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 Keswick. See also: October | November | December.
