S
M
T
W
T
F
S
30
88°
63°
31
90°
63°
1
84°
67°
2
87°
67°
3
89°
66°
4
85°
66°
5
85°
62°
6
78°
62°
7
79°
61°
8
78°
59°
9
78°
55°
10
85°
64°
11
83°
62°
12
79°
61°
13
81°
62°
14
79°
59°
15
71°
54°
16
71°
59°
17
81°
59°
18
81°
61°
19
80°
61°
20
82°
60°
21
80°
59°
22
82°
56°
23
70°
51°
24
71°
56°
25
74°
56°
26
78°
58°
27
79°
57°
28
79°
58°
29
76°
57°
30
75°
56°
1
76°
55°
2
70°
55°
3
74°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Primghar
Primghar's September 2026 forecast shows daily high temperatures ranging from 70° to 90°, with overnight lows between 51° and 67°. The average high for September is 79° with an average low of 59°. 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 Primghar. See also: October | November | December.