S
M
T
W
T
F
S
26
86°
66°
27
85°
65°
28
85°
66°
29
84°
66°
30
85°
67°
31
84°
66°
1
84°
66°
2
86°
67°
3
86°
66°
4
85°
68°
5
88°
71°
6
89°
71°
7
84°
70°
8
84°
69°
9
88°
70°
10
89°
71°
11
88°
70°
12
88°
69°
13
89°
66°
14
83°
66°
15
84°
65°
16
Hist. Avg.
86°
68°
17
Hist. Avg.
86°
68°
18
Hist. Avg.
86°
68°
19
Hist. Avg.
86°
68°
20
Hist. Avg.
86°
68°
21
Hist. Avg.
85°
67°
22
Hist. Avg.
85°
67°
23
Hist. Avg.
85°
67°
24
Hist. Avg.
85°
67°
25
Hist. Avg.
85°
67°
26
Hist. Avg.
85°
66°
27
Hist. Avg.
84°
66°
28
Hist. Avg.
84°
66°
29
Hist. Avg.
84°
66°
30
Hist. Avg.
84°
66°
31
Hist. Avg.
84°
66°
1
Hist. Avg.
84°
65°
2
Hist. Avg.
83°
65°
3
Hist. Avg.
83°
65°
4
Hist. Avg.
83°
65°
5
Hist. Avg.
82°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Swarthmore
Swarthmore's August 2026 forecast shows daily high temperatures ranging from 83° to 89°, with overnight lows between 65° and 71°. The average high for August is 86° with an average low of 68°. 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 Swarthmore. See also: September | October | November.