S
M
T
W
T
F
S
26
81°
58°
27
83°
63°
28
80°
72°
29
79°
68°
30
77°
66°
31
83°
64°
1
84°
71°
2
82°
73°
3
82°
71°
4
84°
70°
5
84°
73°
6
84°
71°
7
85°
72°
8
84°
70°
9
83°
69°
10
86°
68°
11
84°
69°
12
83°
67°
13
82°
67°
14
79°
66°
15
79°
63°
16
77°
62°
17
81°
67°
18
80°
63°
19
78°
68°
20
79°
65°
21
78°
62°
22
77°
67°
23
83°
69°
24
84°
69°
25
83°
68°
26
79°
67°
27
77°
67°
28
76°
68°
29
80°
68°
30
82°
67°
31
80°
67°
1
81°
63°
2
74°
60°
3
73°
61°
4
73°
59°
5
74°
59°
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 73° to 86°, with overnight lows between 59° and 73°. The average high for August is 80° with an average low of 67°. 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.
