S
M
T
W
T
F
S
30
83°
61°
31
82°
59°
1
83°
60°
2
81°
58°
3
80°
57°
4
80°
58°
5
81°
62°
6
80°
63°
7
84°
58°
8
81°
60°
9
82°
62°
10
82°
64°
11
83°
64°
12
85°
62°
13
85°
58°
14
78°
63°
15
84°
62°
16
84°
62°
17
83°
61°
18
84°
54°
19
79°
60°
20
80°
53°
21
84°
52°
22
75°
50°
23
76°
57°
24
78°
59°
25
Hist. Avg.
78°
54°
26
Hist. Avg.
77°
53°
27
Hist. Avg.
77°
53°
28
Hist. Avg.
77°
53°
29
Hist. Avg.
76°
52°
30
Hist. Avg.
76°
52°
1
Hist. Avg.
76°
52°
2
Hist. Avg.
75°
51°
3
Hist. Avg.
75°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Washington Park
Washington Park's September 2026 forecast shows daily high temperatures ranging from 75° to 85°, with overnight lows between 50° and 64°. The average high for September is 81° 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 Washington Park. See also: October | November | December.
