S
M
T
W
T
F
S
30
84°
42°
31
82°
44°
1
67°
47°
2
53°
48°
3
56°
39°
4
64°
33°
5
69°
47°
6
66°
40°
7
75°
42°
8
81°
47°
9
85°
55°
10
83°
50°
11
78°
48°
12
75°
45°
13
77°
46°
14
74°
46°
15
74°
47°
16
76°
46°
17
80°
48°
18
79°
43°
19
72°
40°
20
74°
45°
21
73°
45°
22
72°
42°
23
73°
45°
24
76°
46°
25
75°
44°
26
71°
45°
27
71°
42°
28
72°
41°
29
69°
38°
30
69°
40°
1
76°
44°
2
78°
45°
3
78°
45°
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 66° to 85°, with overnight lows between 38° and 55°. The average high for September is 75° with an average low of 45°. 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.