S
M
T
W
T
F
S
30
85°
59°
31
87°
61°
1
86°
63°
2
87°
62°
3
84°
59°
4
81°
58°
5
83°
58°
6
85°
63°
7
85°
62°
8
84°
59°
9
85°
62°
10
85°
62°
11
84°
61°
12
84°
62°
13
83°
61°
14
84°
59°
15
81°
56°
16
82°
59°
17
83°
58°
18
82°
55°
19
81°
59°
20
82°
60°
21
80°
58°
22
81°
57°
23
80°
56°
24
81°
58°
25
80°
54°
26
75°
52°
27
Hist. Avg.
81°
58°
28
Hist. Avg.
81°
58°
29
Hist. Avg.
80°
57°
30
Hist. Avg.
80°
57°
1
Hist. Avg.
80°
56°
2
Hist. Avg.
79°
56°
3
Hist. Avg.
79°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Mountain Rest
Mountain Rest's September 2026 forecast shows daily high temperatures ranging from 75° to 87°, with overnight lows between 52° and 63°. The average high for September is 83° with an average low of 59°. 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 Mountain Rest. See also: October | November | December.