S
M
T
W
T
F
S
28
70°
57°
29
75°
57°
30
70°
54°
1
70°
55°
2
72°
54°
3
72°
54°
4
68°
54°
5
66°
52°
6
72°
45°
7
81°
58°
8
71°
49°
9
68°
50°
10
75°
50°
11
75°
53°
12
71°
51°
13
73°
51°
14
79°
57°
15
81°
58°
16
79°
57°
17
80°
56°
18
75°
56°
19
79°
53°
20
73°
54°
21
75°
58°
22
74°
57°
23
76°
59°
24
77°
59°
25
77°
60°
26
76°
59°
27
75°
58°
28
73°
59°
29
73°
57°
30
69°
56°
31
71°
58°
1
75°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Yellowstone
Yellowstone's July 2026 forecast shows daily high temperatures ranging from 68° to 81°, with overnight lows between 49° and 60°. The average high for July is 75° with an average low of 56°. 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 Yellowstone. See also: August | September | October.