S
M
T
W
T
F
S
28
84°
52°
29
81°
52°
30
84°
56°
1
91°
58°
2
91°
59°
3
92°
59°
4
93°
60°
5
93°
60°
6
88°
59°
7
93°
58°
8
92°
56°
9
93°
57°
10
88°
59°
11
89°
61°
12
91°
60°
13
94°
63°
14
96°
61°
15
96°
62°
16
97°
62°
17
97°
63°
18
96°
61°
19
97°
57°
20
95°
59°
21
97°
60°
22
97°
63°
23
95°
62°
24
97°
63°
25
97°
63°
26
96°
57°
27
95°
60°
28
95°
59°
29
90°
57°
30
89°
59°
31
91°
54°
1
88°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Thermopolis
Thermopolis's July 2026 forecast shows daily high temperatures ranging from 81° to 97°, with overnight lows between 52° and 63°. The average high for July is 93° with an average low of 59°. 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 Thermopolis. See also: August | September | October.