S
M
T
W
T
F
S
30
82°
64°
31
75°
61°
1
77°
55°
2
79°
52°
3
81°
52°
4
N/A
5
78°
51°
6
81°
57°
7
88°
63°
8
79°
59°
9
69°
51°
10
69°
52°
11
67°
54°
12
64°
53°
13
67°
53°
14
68°
53°
15
65°
51°
16
67°
53°
17
67°
48°
18
73°
52°
19
72°
54°
20
72°
53°
21
68°
49°
22
71°
50°
23
72°
53°
24
72°
52°
25
73°
53°
26
72°
53°
27
70°
50°
28
68°
52°
29
67°
50°
30
69°
46°
1
62°
45°
2
59°
44°
3
60°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Greffern
Greffern's September 2026 forecast shows daily high temperatures ranging from 59° to 88°, with overnight lows between 44° and 63°. The average high for September is 70° with an average low of 52°. 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 Greffern. See also: October | November | December.
