S
M
T
W
T
F
S
26
78°
58°
27
82°
61°
28
84°
64°
29
86°
60°
30
82°
56°
31
81°
55°
1
77°
56°
2
78°
56°
3
78°
55°
4
77°
56°
5
78°
59°
6
78°
61°
7
79°
64°
8
82°
60°
9
82°
58°
10
83°
60°
11
84°
65°
12
82°
58°
13
86°
53°
14
79°
63°
15
79°
63°
16
83°
59°
17
79°
55°
18
77°
55°
19
76°
56°
20
77°
55°
21
78°
53°
22
75°
54°
23
76°
56°
24
79°
53°
25
75°
62°
26
76°
61°
27
82°
62°
28
79°
52°
29
78°
58°
30
78°
53°
31
76°
52°
1
74°
57°
2
74°
51°
3
75°
51°
4
74°
59°
5
74°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in St. James
St. James's August 2026 forecast shows daily high temperatures ranging from 74° to 86°, with overnight lows between 51° and 65°. The average high for August is 79° with an average low of 58°. 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 St. James. See also: September | October | November.
