S
M
T
W
T
F
S
30
72°
45°
31
78°
39°
1
81°
44°
2
83°
47°
3
76°
47°
4
80°
47°
5
79°
45°
6
84°
52°
7
66°
45°
8
76°
41°
9
77°
50°
10
79°
53°
11
81°
54°
12
79°
51°
13
77°
50°
14
76°
51°
15
77°
49°
16
74°
47°
17
73°
43°
18
75°
42°
19
63°
37°
20
65°
44°
21
67°
44°
22
71°
46°
23
75°
43°
24
63°
35°
25
60°
34°
26
61°
35°
27
64°
38°
28
72°
42°
29
73°
42°
30
73°
43°
1
66°
40°
2
70°
42°
3
72°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Three Forks
Three Forks's September 2026 forecast shows daily high temperatures ranging from 60° to 84°, with overnight lows between 34° and 54°. The average high for September is 72° with an average low of 44°. 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 Three Forks. See also: October | November | December.
