S
M
T
W
T
F
S
30
79°
66°
31
88°
61°
1
82°
59°
2
82°
50°
3
83°
62°
4
81°
64°
5
88°
69°
6
81°
66°
7
79°
66°
8
78°
59°
9
74°
52°
10
76°
56°
11
75°
55°
12
72°
53°
13
74°
55°
14
78°
59°
15
78°
53°
16
70°
46°
17
74°
53°
18
76°
53°
19
74°
51°
20
65°
45°
21
71°
51°
22
68°
50°
23
71°
51°
24
73°
49°
25
65°
45°
26
59°
40°
27
60°
37°
28
58°
45°
29
69°
40°
30
56°
43°
1
62°
44°
2
55°
40°
3
61°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Crookston
Crookston's September 2026 forecast shows daily high temperatures ranging from 55° to 88°, with overnight lows between 37° and 69°. The average high for September is 71° with an average low of 51°. 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 Crookston. See also: October | November | December.
