S
M
T
W
T
F
S
30
101°
64°
31
99°
65°
1
97°
61°
2
99°
63°
3
105°
67°
4
102°
65°
5
91°
67°
6
93°
69°
7
99°
70°
8
101°
68°
9
88°
63°
10
87°
64°
11
96°
63°
12
99°
63°
13
96°
60°
14
80°
53°
15
82°
57°
16
85°
59°
17
91°
59°
18
86°
55°
19
82°
57°
20
84°
52°
21
87°
59°
22
83°
58°
23
87°
57°
24
83°
57°
25
81°
56°
26
83°
56°
27
85°
55°
28
79°
56°
29
80°
43°
30
73°
42°
1
71°
43°
2
72°
41°
3
71°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Richfield
Richfield's September 2026 forecast shows daily high temperatures ranging from 71° to 101°, with overnight lows between 41° and 70°. The average high for September is 85° 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 Richfield. See also: October | November | December.
