S
M
T
W
T
F
S
28
90°
74°
29
91°
72°
30
94°
73°
1
93°
74°
2
91°
73°
3
90°
71°
4
94°
73°
5
90°
71°
6
88°
70°
7
89°
69°
8
90°
71°
9
90°
72°
10
89°
70°
11
90°
71°
12
89°
69°
13
92°
72°
14
86°
66°
15
87°
66°
16
87°
68°
17
90°
70°
18
92°
72°
19
92°
73°
20
91°
72°
21
90°
73°
22
92°
74°
23
93°
74°
24
92°
73°
25
93°
72°
26
92°
73°
27
93°
73°
28
92°
72°
29
94°
73°
30
94°
74°
31
92°
73°
1
93°
74°
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 86° to 94°, with overnight lows between 66° and 74°. The average high for July is 91° with an average low of 72°. 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.