S
M
T
W
T
F
S
28
32°
21°
29
32°
24°
30
33°
26°
1
37°
25°
2
34°
25°
3
36°
27°
4
35°
26°
5
37°
25°
6
35°
28°
7
38°
28°
8
35°
27°
9
36°
27°
10
37°
26°
11
38°
27°
12
40°
26°
13
40°
26°
14
37°
27°
15
39°
28°
16
41°
27°
17
40°
29°
18
41°
28°
19
41°
28°
20
40°
26°
21
40°
27°
22
38°
26°
23
39°
27°
24
40°
28°
25
39°
27°
26
40°
27°
27
41°
28°
28
41°
29°
29
42°
28°
30
42°
28°
31
41°
27°
1
43°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Longyearbyen
Longyearbyen's July 2026 forecast shows daily high temperatures ranging from 32° to 43°, with overnight lows between 21° and 29°. The average high for July is 38° with an average low of 27°. 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 Longyearbyen. See also: August | September | October.