S
M
T
W
T
F
S
26
88°
62°
27
90°
62°
28
88°
65°
29
85°
53°
30
89°
56°
31
81°
53°
1
81°
49°
2
77°
50°
3
77°
51°
4
80°
53°
5
87°
55°
6
88°
58°
7
89°
59°
8
88°
60°
9
88°
59°
10
87°
60°
11
87°
55°
12
85°
56°
13
79°
58°
14
78°
58°
15
Hist. Avg.
83°
53°
16
Hist. Avg.
83°
53°
17
Hist. Avg.
83°
53°
18
Hist. Avg.
82°
53°
19
Hist. Avg.
82°
52°
20
Hist. Avg.
82°
52°
21
Hist. Avg.
81°
52°
22
Hist. Avg.
81°
51°
23
Hist. Avg.
80°
51°
24
Hist. Avg.
80°
51°
25
Hist. Avg.
80°
50°
26
Hist. Avg.
79°
50°
27
Hist. Avg.
79°
50°
28
Hist. Avg.
78°
49°
29
Hist. Avg.
78°
49°
30
Hist. Avg.
78°
49°
31
Hist. Avg.
77°
48°
1
Hist. Avg.
77°
48°
2
Hist. Avg.
76°
48°
3
Hist. Avg.
76°
47°
4
Hist. Avg.
75°
47°
5
Hist. Avg.
75°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Elgin
Elgin's August 2026 forecast shows daily high temperatures ranging from 77° to 90°, with overnight lows between 49° and 65°. The average high for August is 85° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Elgin. See also: September | October | November.