S
M
T
W
T
F
S
30
79°
57°
31
82°
62°
1
85°
57°
2
84°
54°
3
78°
55°
4
79°
56°
5
80°
61°
6
84°
61°
7
84°
60°
8
83°
60°
9
80°
61°
10
83°
60°
11
82°
59°
12
82°
60°
13
81°
58°
14
80°
54°
15
75°
55°
16
73°
56°
17
75°
53°
18
74°
52°
19
78°
56°
20
79°
57°
21
78°
55°
22
74°
52°
23
75°
54°
24
76°
56°
25
77°
49°
26
73°
53°
27
70°
50°
28
Hist. Avg.
72°
48°
29
Hist. Avg.
71°
47°
30
Hist. Avg.
71°
47°
1
Hist. Avg.
71°
46°
2
Hist. Avg.
70°
46°
3
Hist. Avg.
70°
46°
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 70° to 85°, with overnight lows between 49° and 62°. The average high for September is 79° 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.
