S
M
T
W
T
F
S
30
85°
66°
31
82°
66°
1
81°
68°
2
81°
67°
3
82°
67°
4
84°
68°
5
87°
68°
6
88°
69°
7
88°
68°
8
87°
67°
9
86°
67°
10
86°
68°
11
87°
68°
12
87°
67°
13
86°
66°
14
85°
66°
15
84°
65°
16
83°
65°
17
83°
64°
18
84°
65°
19
83°
65°
20
84°
63°
21
80°
63°
22
83°
61°
23
84°
61°
24
83°
62°
25
76°
58°
26
77°
61°
27
82°
59°
28
83°
60°
29
84°
60°
30
83°
59°
1
82°
59°
2
79°
58°
3
81°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Halifax
Halifax's September 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 58° and 69°. The average high for September is 83° with an average low of 64°. 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 Halifax. See also: October | November | December.