S
M
T
W
T
F
S
26
71°
55°
27
71°
55°
28
70°
58°
29
72°
58°
30
73°
57°
31
74°
60°
1
75°
58°
2
73°
58°
3
71°
57°
4
71°
57°
5
69°
55°
6
69°
57°
7
67°
54°
8
65°
53°
9
66°
57°
10
69°
56°
11
67°
52°
12
69°
52°
13
66°
51°
14
66°
51°
15
67°
52°
16
68°
56°
17
68°
54°
18
71°
56°
19
70°
56°
20
70°
51°
21
69°
55°
22
69°
55°
23
70°
56°
24
69°
51°
25
66°
52°
26
65°
53°
27
65°
55°
28
67°
55°
29
70°
56°
30
70°
53°
31
69°
55°
1
68°
55°
2
68°
54°
3
67°
52°
4
67°
50°
5
63°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Gelligaer
Gelligaer's August 2026 forecast shows daily high temperatures ranging from 63° to 75°, with overnight lows between 50° and 60°. The average high for August is 69° with an average low of 55°. 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 Gelligaer. See also: September | October | November.