S
M
T
W
T
F
S
30
65°
55°
31
69°
53°
1
67°
55°
2
70°
54°
3
66°
54°
4
67°
53°
5
65°
53°
6
64°
54°
7
66°
52°
8
64°
56°
9
64°
51°
10
65°
52°
11
64°
54°
12
63°
53°
13
63°
55°
14
65°
54°
15
67°
50°
16
67°
51°
17
67°
54°
18
Hist. Avg.
63°
51°
19
Hist. Avg.
63°
50°
20
Hist. Avg.
63°
50°
21
Hist. Avg.
63°
50°
22
Hist. Avg.
63°
50°
23
Hist. Avg.
62°
50°
24
Hist. Avg.
62°
50°
25
Hist. Avg.
62°
50°
26
Hist. Avg.
62°
50°
27
Hist. Avg.
62°
49°
28
Hist. Avg.
62°
49°
29
Hist. Avg.
62°
49°
30
Hist. Avg.
61°
49°
1
Hist. Avg.
61°
49°
2
Hist. Avg.
61°
49°
3
Hist. Avg.
61°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Northam
Northam's September 2026 forecast shows daily high temperatures ranging from 63° to 70°, with overnight lows between 50° and 56°. The average high for September is 66° with an average low of 53°. 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 Northam. See also: October | November | December.