S
M
T
W
T
F
S
30
88°
68°
31
87°
65°
1
87°
65°
2
81°
62°
3
82°
62°
4
85°
66°
5
86°
64°
6
85°
63°
7
80°
61°
8
81°
64°
9
82°
61°
10
81°
61°
11
81°
62°
12
82°
61°
13
81°
60°
14
79°
59°
15
80°
60°
16
80°
59°
17
83°
63°
18
82°
62°
19
79°
63°
20
81°
62°
21
82°
62°
22
Hist. Avg.
79°
58°
23
Hist. Avg.
79°
58°
24
Hist. Avg.
79°
57°
25
Hist. Avg.
78°
57°
26
Hist. Avg.
78°
56°
27
Hist. Avg.
78°
56°
28
Hist. Avg.
78°
56°
29
Hist. Avg.
77°
55°
30
Hist. Avg.
77°
55°
1
Hist. Avg.
77°
54°
2
Hist. Avg.
76°
54°
3
Hist. Avg.
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Richfield
Richfield's September 2026 forecast shows daily high temperatures ranging from 79° to 88°, with overnight lows between 59° and 68°. The average high for September is 82° with an average low of 62°. 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 Richfield. See also: October | November | December.