S
M
T
W
T
F
S
26
84°
70°
27
89°
74°
28
84°
71°
29
71°
61°
30
64°
57°
1
59°
51°
2
74°
48°
3
82°
49°
4
80°
56°
5
84°
68°
6
75°
54°
7
71°
51°
8
80°
55°
9
84°
61°
10
80°
64°
11
77°
62°
12
81°
53°
13
86°
54°
14
89°
62°
15
90°
71°
16
88°
72°
17
89°
75°
18
89°
73°
19
87°
70°
20
80°
69°
21
84°
68°
22
81°
69°
23
85°
70°
24
87°
71°
25
87°
71°
26
88°
72°
27
90°
72°
28
89°
67°
29
89°
71°
30
85°
71°
31
86°
70°
1
85°
71°
2
87°
72°
3
90°
72°
4
91°
71°
5
91°
73°
6
85°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Longview Northwest
Longview Northwest's May 2026 forecast shows daily high temperatures ranging from 80° to 91°, with overnight lows between 67° and 75°. The average high for May is 87° with an average low of 71°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Longview Northwest. See also: June | July | August.