S
M
T
W
T
F
S
26
81°
66°
27
81°
69°
28
81°
65°
29
80°
68°
30
81°
69°
31
81°
63°
1
81°
70°
2
83°
71°
3
82°
65°
4
83°
64°
5
81°
63°
6
82°
63°
7
83°
65°
8
80°
64°
9
79°
69°
10
84°
69°
11
81°
66°
12
84°
68°
13
85°
70°
14
81°
70°
15
81°
69°
16
85°
63°
17
84°
62°
18
78°
63°
19
78°
66°
20
77°
63°
21
79°
61°
22
79°
67°
23
78°
68°
24
81°
69°
25
85°
68°
26
84°
60°
27
81°
59°
28
75°
59°
29
76°
61°
30
76°
64°
31
78°
66°
1
81°
67°
2
82°
65°
3
81°
62°
4
81°
66°
5
80°
64°
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 75° to 85°, with overnight lows between 59° and 71°. The average high for August is 81° with an average low of 65°. 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.
