S
M
T
W
T
F
S
26
82°
66°
27
83°
70°
28
86°
69°
29
86°
65°
30
85°
65°
31
80°
64°
1
81°
65°
2
82°
64°
3
80°
63°
4
81°
64°
5
82°
67°
6
82°
64°
7
81°
69°
8
84°
70°
9
80°
70°
10
81°
69°
11
80°
67°
12
85°
67°
13
86°
68°
14
85°
68°
15
85°
65°
16
84°
67°
17
81°
61°
18
79°
62°
19
80°
61°
20
79°
64°
21
80°
68°
22
83°
69°
23
85°
67°
24
83°
66°
25
83°
66°
26
84°
67°
27
Hist. Avg.
80°
64°
28
Hist. Avg.
80°
64°
29
Hist. Avg.
80°
64°
30
Hist. Avg.
79°
64°
31
Hist. Avg.
79°
64°
1
Hist. Avg.
79°
64°
2
Hist. Avg.
79°
63°
3
Hist. Avg.
79°
63°
4
Hist. Avg.
78°
63°
5
Hist. Avg.
78°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in St. James
St. James's August 2026 forecast shows daily high temperatures ranging from 79° to 86°, with overnight lows between 61° and 70°. The average high for August is 82° with an average low of 66°. 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.
