S
M
T
W
T
F
S
30
70°
50°
31
69°
52°
1
68°
52°
2
73°
51°
3
71°
53°
4
72°
52°
5
67°
50°
6
67°
49°
7
68°
47°
8
67°
51°
9
68°
51°
10
70°
47°
11
66°
51°
12
67°
50°
13
66°
50°
14
65°
51°
15
68°
50°
16
68°
46°
17
71°
50°
18
69°
50°
19
Hist. Avg.
64°
48°
20
Hist. Avg.
64°
48°
21
Hist. Avg.
64°
48°
22
Hist. Avg.
63°
48°
23
Hist. Avg.
63°
48°
24
Hist. Avg.
63°
48°
25
Hist. Avg.
63°
48°
26
Hist. Avg.
62°
48°
27
Hist. Avg.
62°
47°
28
Hist. Avg.
62°
47°
29
Hist. Avg.
62°
47°
30
Hist. Avg.
61°
47°
1
Hist. Avg.
61°
47°
2
Hist. Avg.
61°
47°
3
Hist. Avg.
61°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in March
March's September 2026 forecast shows daily high temperatures ranging from 65° to 73°, with overnight lows between 46° and 53°. The average high for September is 69° with an average low of 50°. 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 March. See also: October | November | December.