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
81°
64°
10
84°
61°
11
90°
69°
12
92°
67°
13
93°
67°
14
96°
66°
15
94°
71°
16
94°
71°
17
92°
67°
18
89°
66°
19
86°
64°
20
86°
62°
21
86°
65°
22
85°
63°
23
86°
63°
24
83°
62°
25
88°
69°
26
89°
68°
27
85°
65°
28
78°
62°
29
76°
65°
30
77°
63°
31
80°
66°
1
77°
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 76° to 96°, with overnight lows between 62° and 71°. The average high for July is 86° 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.