S
M
T
W
T
F
S
26
83°
51°
27
81°
50°
28
81°
51°
29
84°
51°
30
85°
52°
31
85°
52°
1
84°
51°
2
85°
52°
3
85°
52°
4
84°
51°
5
84°
51°
6
83°
50°
7
84°
51°
8
84°
51°
9
83°
50°
10
82°
51°
11
79°
50°
12
81°
51°
13
80°
49°
14
83°
47°
15
77°
49°
16
83°
44°
17
77°
46°
18
81°
47°
19
76°
45°
20
77°
45°
21
81°
48°
22
83°
47°
23
79°
46°
24
77°
46°
25
77°
43°
26
79°
42°
27
80°
45°
28
80°
45°
29
81°
46°
30
82°
44°
31
80°
45°
1
81°
43°
2
82°
42°
3
81°
45°
4
82°
42°
5
80°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Alamosa
Alamosa's August 2026 forecast shows daily high temperatures ranging from 76° to 85°, with overnight lows between 42° and 52°. The average high for August is 81° with an average low of 48°. 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 Alamosa. See also: September | October | November.
