S
M
T
W
T
F
S
30
74°
60°
31
73°
57°
1
74°
53°
2
73°
52°
3
71°
52°
4
72°
53°
5
74°
54°
6
74°
58°
7
77°
58°
8
71°
57°
9
74°
57°
10
77°
56°
11
76°
57°
12
76°
56°
13
75°
58°
14
77°
56°
15
76°
50°
16
75°
48°
17
67°
53°
18
66°
56°
19
76°
55°
20
73°
54°
21
74°
46°
22
73°
45°
23
71°
51°
24
71°
52°
25
Hist. Avg.
70°
50°
26
Hist. Avg.
69°
49°
27
Hist. Avg.
69°
49°
28
Hist. Avg.
68°
49°
29
Hist. Avg.
68°
48°
30
Hist. Avg.
68°
48°
1
Hist. Avg.
67°
48°
2
Hist. Avg.
67°
48°
3
Hist. Avg.
66°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Yale
Yale's September 2026 forecast shows daily high temperatures ranging from 66° to 77°, with overnight lows between 45° and 60°. The average high for September is 73° with an average low of 54°. 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 Yale. See also: October | November | December.