S
M
T
W
T
F
S
26
88°
76°
27
88°
75°
28
89°
76°
29
89°
76°
30
90°
75°
31
90°
76°
1
89°
75°
2
89°
76°
3
90°
74°
4
90°
74°
5
91°
75°
6
92°
76°
7
93°
73°
8
94°
76°
9
93°
73°
10
89°
75°
11
93°
74°
12
91°
73°
13
89°
74°
14
89°
75°
15
93°
75°
16
93°
74°
17
92°
75°
18
92°
75°
19
91°
74°
20
93°
75°
21
90°
75°
22
91°
74°
23
93°
74°
24
92°
72°
25
91°
73°
26
89°
72°
27
88°
71°
28
90°
72°
29
89°
72°
30
89°
74°
31
91°
73°
1
92°
72°
2
90°
72°
3
90°
71°
4
91°
72°
5
88°
73°
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 88° to 94°, with overnight lows between 71° and 76°. The average high for August is 91° with an average low of 74°. 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.
