S
M
T
W
T
F
S
30
77°
47°
31
77°
51°
1
76°
51°
2
79°
49°
3
76°
51°
4
77°
51°
5
77°
49°
6
76°
47°
7
75°
46°
8
74°
48°
9
75°
48°
10
75°
47°
11
74°
47°
12
76°
49°
13
73°
49°
14
74°
46°
15
72°
48°
16
71°
48°
17
73°
47°
18
71°
43°
19
73°
42°
20
66°
40°
21
71°
41°
22
72°
47°
23
73°
47°
24
72°
48°
25
69°
47°
26
70°
46°
27
68°
45°
28
71°
37°
29
65°
41°
30
63°
44°
1
Hist. Avg.
64°
38°
2
Hist. Avg.
64°
38°
3
Hist. Avg.
64°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Weed
Weed's September 2026 forecast shows daily high temperatures ranging from 63° to 79°, with overnight lows between 37° and 51°. The average high for September is 73° with an average low of 46°. 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 Weed. See also: October | November | December.