S
M
T
W
T
F
S
26
80°
54°
27
75°
54°
28
75°
55°
29
76°
54°
30
76°
55°
31
75°
54°
1
74°
54°
2
77°
55°
3
79°
58°
4
77°
58°
5
78°
60°
6
81°
60°
7
75°
59°
8
78°
57°
9
80°
59°
10
81°
60°
11
80°
58°
12
78°
56°
13
80°
55°
14
74°
55°
15
74°
53°
16
Hist. Avg.
79°
59°
17
Hist. Avg.
79°
59°
18
Hist. Avg.
78°
58°
19
Hist. Avg.
78°
58°
20
Hist. Avg.
78°
58°
21
Hist. Avg.
78°
58°
22
Hist. Avg.
78°
58°
23
Hist. Avg.
78°
57°
24
Hist. Avg.
77°
57°
25
Hist. Avg.
77°
57°
26
Hist. Avg.
77°
56°
27
Hist. Avg.
77°
56°
28
Hist. Avg.
76°
56°
29
Hist. Avg.
76°
56°
30
Hist. Avg.
76°
55°
31
Hist. Avg.
76°
55°
1
Hist. Avg.
76°
55°
2
Hist. Avg.
75°
54°
3
Hist. Avg.
75°
54°
4
Hist. Avg.
75°
54°
5
Hist. Avg.
75°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Bethlehem
Bethlehem's August 2026 forecast shows daily high temperatures ranging from 74° to 81°, with overnight lows between 53° and 60°. The average high for August is 77° with an average low of 56°. 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 Bethlehem. See also: September | October | November.