S
M
T
W
T
F
S
30
90°
64°
31
90°
64°
1
94°
68°
2
98°
66°
3
91°
66°
4
96°
66°
5
82°
64°
6
78°
60°
7
80°
56°
8
85°
55°
9
90°
56°
10
88°
67°
11
76°
69°
12
81°
68°
13
N/A
14
78°
51°
15
76°
55°
16
83°
60°
17
85°
64°
18
81°
61°
19
79°
63°
20
78°
56°
21
68°
54°
22
67°
56°
23
71°
54°
24
71°
54°
25
74°
53°
26
73°
54°
27
78°
56°
28
77°
54°
29
76°
55°
30
76°
55°
1
72°
54°
2
76°
54°
3
76°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Harrisonburg
Harrisonburg's September 2026 forecast shows daily high temperatures ranging from 67° to 85°, with overnight lows between 51° and 64°. The average high for September is 76° with an average low of 56°. 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 Harrisonburg. See also: October | November | December.
