S
M
T
W
T
F
S
26
80°
58°
27
87°
59°
28
90°
57°
29
89°
52°
30
83°
55°
31
84°
52°
1
81°
52°
2
81°
53°
3
83°
52°
4
82°
53°
5
83°
54°
6
84°
56°
7
85°
58°
8
89°
58°
9
88°
56°
10
90°
59°
11
90°
50°
12
86°
47°
13
77°
45°
14
76°
46°
15
77°
48°
16
78°
55°
17
80°
56°
18
88°
59°
19
89°
59°
20
89°
58°
21
88°
56°
22
88°
55°
23
87°
52°
24
80°
55°
25
78°
54°
26
79°
52°
27
81°
53°
28
76°
45°
29
73°
45°
30
73°
44°
31
74°
49°
1
77°
49°
2
76°
47°
3
75°
52°
4
81°
53°
5
82°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Geyser
Geyser's August 2026 forecast shows daily high temperatures ranging from 73° to 90°, with overnight lows between 44° and 59°. The average high for August is 82° with an average low of 53°. 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 Geyser. See also: September | October | November.