S
M
T
W
T
F
S
26
66°
42°
27
67°
44°
28
67°
43°
29
68°
45°
30
65°
44°
1
64°
42°
2
59°
43°
3
60°
41°
4
63°
45°
5
61°
43°
6
67°
43°
7
67°
45°
8
61°
41°
9
59°
39°
10
59°
39°
11
60°
40°
12
65°
44°
13
67°
45°
14
61°
41°
15
60°
40°
16
61°
42°
17
62°
41°
18
70°
47°
19
69°
46°
20
65°
49°
21
63°
49°
22
64°
48°
23
63°
47°
24
62°
45°
25
63°
43°
26
66°
43°
27
70°
46°
28
71°
49°
29
70°
48°
30
68°
45°
31
71°
47°
1
66°
46°
2
65°
48°
3
74°
50°
4
75°
48°
5
65°
47°
6
71°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Napavine
Napavine's May 2026 forecast shows daily high temperatures ranging from 59° to 75°, with overnight lows between 39° and 50°. The average high for May is 65° with an average low of 44°. 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 Napavine. See also: June | July | August.
