S
M
T
W
T
F
S
30
100°
72°
31
101°
74°
1
101°
74°
2
101°
74°
3
100°
80°
4
95°
78°
5
100°
73°
6
96°
77°
7
101°
73°
8
100°
76°
9
99°
76°
10
98°
76°
11
99°
76°
12
102°
77°
13
101°
75°
14
99°
75°
15
97°
76°
16
95°
73°
17
93°
72°
18
92°
71°
19
93°
70°
20
90°
69°
21
89°
68°
22
93°
70°
23
92°
70°
24
84°
69°
25
83°
69°
26
87°
68°
27
86°
69°
28
86°
69°
29
87°
68°
30
85°
64°
1
82°
59°
2
80°
58°
3
81°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Garfield
Garfield's September 2026 forecast shows daily high temperatures ranging from 80° to 102°, with overnight lows between 57° and 77°. The average high for September is 91° with an average low of 70°. 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 Garfield. See also: October | November | December.