S
M
T
W
T
F
S
30
66°
57°
31
64°
57°
1
66°
57°
2
70°
59°
3
66°
57°
4
63°
55°
5
66°
55°
6
72°
57°
7
64°
54°
8
61°
54°
9
N/A
10
65°
55°
11
65°
57°
12
67°
57°
13
68°
59°
14
70°
56°
15
64°
53°
16
63°
56°
17
64°
55°
18
66°
55°
19
66°
54°
20
65°
55°
21
63°
53°
22
65°
54°
23
64°
52°
24
62°
51°
25
60°
51°
26
61°
52°
27
63°
52°
28
62°
47°
29
58°
46°
30
58°
51°
1
60°
51°
2
59°
49°
3
58°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Newmarket on Fergus
Newmarket on Fergus's September 2026 forecast shows daily high temperatures ranging from 58° to 70°, with overnight lows between 46° and 59°. The average high for September is 63° 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 Newmarket on Fergus. See also: October | November | December.
