S
M
T
W
T
F
S
30
90°
63°
31
91°
56°
1
90°
58°
2
79°
61°
3
88°
62°
4
87°
60°
5
88°
52°
6
80°
59°
7
83°
60°
8
88°
59°
9
88°
55°
10
78°
57°
11
76°
53°
12
77°
49°
13
75°
49°
14
75°
50°
15
76°
56°
16
81°
57°
17
84°
57°
18
84°
54°
19
82°
49°
20
74°
53°
21
81°
55°
22
80°
46°
23
84°
44°
24
72°
45°
25
71°
45°
26
71°
41°
27
Hist. Avg.
75°
44°
28
Hist. Avg.
75°
44°
29
Hist. Avg.
74°
43°
30
Hist. Avg.
74°
43°
1
Hist. Avg.
74°
42°
2
Hist. Avg.
73°
42°
3
Hist. Avg.
73°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Grainfield
Grainfield's September 2026 forecast shows daily high temperatures ranging from 71° to 91°, with overnight lows between 41° and 63°. The average high for September is 81° with an average low of 54°. 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 Grainfield. See also: October | November | December.
