S
M
T
W
T
F
S
30
91°
66°
31
90°
64°
1
86°
64°
2
86°
66°
3
85°
64°
4
86°
64°
5
89°
66°
6
90°
67°
7
89°
62°
8
85°
63°
9
85°
61°
10
84°
62°
11
85°
62°
12
87°
64°
13
88°
64°
14
83°
61°
15
83°
60°
16
Hist. Avg.
84°
61°
17
Hist. Avg.
84°
61°
18
Hist. Avg.
84°
60°
19
Hist. Avg.
83°
60°
20
Hist. Avg.
83°
59°
21
Hist. Avg.
83°
59°
22
Hist. Avg.
82°
58°
23
Hist. Avg.
82°
58°
24
Hist. Avg.
82°
58°
25
Hist. Avg.
82°
57°
26
Hist. Avg.
81°
57°
27
Hist. Avg.
81°
56°
28
Hist. Avg.
81°
56°
29
Hist. Avg.
80°
55°
30
Hist. Avg.
80°
55°
1
Hist. Avg.
80°
54°
2
Hist. Avg.
79°
54°
3
Hist. Avg.
79°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Warrenton
Warrenton's September 2026 forecast shows daily high temperatures ranging from 83° to 91°, with overnight lows between 60° and 67°. The average high for September is 87° with an average low of 64°. 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 Warrenton. See also: October | November | December.
