S
M
T
W
T
F
S
30
100°
78°
31
101°
77°
1
101°
76°
2
100°
76°
3
100°
77°
4
101°
74°
5
99°
73°
6
100°
75°
7
99°
73°
8
98°
75°
9
97°
74°
10
97°
73°
11
98°
72°
12
98°
72°
13
100°
73°
14
102°
70°
15
97°
70°
16
96°
71°
17
96°
71°
18
98°
70°
19
98°
72°
20
101°
74°
21
101°
74°
22
103°
77°
23
102°
76°
24
98°
74°
25
93°
71°
26
95°
69°
27
93°
70°
28
95°
71°
29
94°
70°
30
92°
70°
1
91°
68°
2
91°
65°
3
96°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Litchfield Park
Litchfield Park's September 2026 forecast shows daily high temperatures ranging from 91° to 103°, with overnight lows between 65° and 78°. The average high for September is 98° with an average low of 73°. 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 Litchfield Park. See also: October | November | December.