S
M
T
W
T
F
S
30
82°
52°
31
83°
56°
1
84°
55°
2
84°
54°
3
87°
60°
4
84°
59°
5
79°
56°
6
80°
55°
7
83°
55°
8
83°
58°
9
80°
58°
10
79°
57°
11
87°
60°
12
87°
61°
13
91°
56°
14
89°
55°
15
87°
55°
16
86°
54°
17
81°
55°
18
85°
54°
19
86°
54°
20
82°
53°
21
85°
55°
22
85°
56°
23
83°
52°
24
82°
51°
25
82°
49°
26
77°
47°
27
75°
45°
28
70°
46°
29
78°
48°
30
81°
51°
1
75°
42°
2
68°
40°
3
73°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Spanish Fork
Spanish Fork's September 2026 forecast shows daily high temperatures ranging from 68° to 91°, with overnight lows between 40° and 61°. The average high for September is 82° with an average low of 53°. 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 Spanish Fork. See also: October | November | December.