S
M
T
W
T
F
S
28
81°
68°
29
90°
75°
30
88°
68°
1
84°
68°
2
81°
68°
3
82°
66°
4
82°
64°
5
84°
63°
6
86°
63°
7
86°
64°
8
81°
68°
9
82°
61°
10
86°
64°
11
89°
64°
12
89°
66°
13
93°
67°
14
91°
66°
15
92°
67°
16
91°
68°
17
92°
67°
18
90°
67°
19
93°
66°
20
88°
67°
21
85°
65°
22
83°
62°
23
85°
65°
24
89°
69°
25
88°
69°
26
89°
68°
27
87°
67°
28
87°
66°
29
83°
65°
30
84°
66°
31
84°
65°
1
85°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in St. James
St. James's July 2026 forecast shows daily high temperatures ranging from 82° to 93°, with overnight lows between 61° and 69°. The average high for July is 88° 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 July weather will actually feel in St. James. See also: August | September | October.