S
M
T
W
T
F
S
28
77°
69°
29
90°
69°
30
92°
68°
1
96°
75°
2
101°
77°
3
100°
76°
4
94°
75°
5
95°
69°
6
90°
68°
7
88°
66°
8
82°
63°
9
84°
65°
10
87°
66°
11
88°
67°
12
90°
67°
13
90°
68°
14
88°
65°
15
80°
62°
16
81°
62°
17
83°
63°
18
85°
66°
19
88°
69°
20
86°
69°
21
82°
68°
22
85°
68°
23
88°
69°
24
88°
69°
25
87°
68°
26
89°
69°
27
89°
69°
28
88°
68°
29
89°
69°
30
90°
70°
31
90°
70°
1
86°
69°
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 80° to 101°, with overnight lows between 62° and 77°. The average high for July is 88° with an average low of 68°. 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.