S
M
T
W
T
F
S
30
65°
48°
31
64°
49°
1
64°
52°
2
63°
51°
3
62°
51°
4
61°
50°
5
63°
49°
6
62°
51°
7
63°
47°
8
61°
50°
9
63°
51°
10
64°
51°
11
63°
49°
12
62°
50°
13
60°
50°
14
58°
46°
15
57°
45°
16
57°
45°
17
58°
43°
18
57°
44°
19
56°
46°
20
57°
45°
21
57°
45°
22
58°
48°
23
59°
45°
24
56°
46°
25
57°
46°
26
59°
47°
27
60°
48°
28
59°
48°
29
Hist. Avg.
56°
45°
30
Hist. Avg.
56°
44°
1
Hist. Avg.
56°
44°
2
Hist. Avg.
56°
44°
3
Hist. Avg.
55°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Fort Augustus
Fort Augustus's September 2026 forecast shows daily high temperatures ranging from 56° to 65°, with overnight lows between 43° and 52°. The average high for September is 60° with an average low of 48°. 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 Fort Augustus. See also: October | November | December.
