S
M
T
W
T
F
S
30
75°
55°
31
76°
57°
1
78°
55°
2
74°
54°
3
73°
59°
4
77°
62°
5
79°
61°
6
79°
55°
7
75°
57°
8
72°
54°
9
76°
60°
10
77°
58°
11
73°
59°
12
73°
59°
13
74°
54°
14
70°
51°
15
69°
51°
16
69°
50°
17
70°
56°
18
73°
56°
19
76°
58°
20
77°
57°
21
71°
50°
22
73°
55°
23
68°
54°
24
75°
48°
25
68°
47°
26
66°
53°
27
66°
48°
28
Hist. Avg.
68°
48°
29
Hist. Avg.
68°
48°
30
Hist. Avg.
68°
48°
1
Hist. Avg.
67°
47°
2
Hist. Avg.
67°
47°
3
Hist. Avg.
66°
47°
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 66° to 79°, with overnight lows between 47° and 62°. The average high for September is 73° with an average low of 55°. 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.