S
M
T
W
T
F
S
26
61°
37°
27
68°
34°
28
62°
38°
29
59°
45°
30
55°
40°
1
57°
33°
2
54°
38°
3
55°
32°
4
69°
31°
5
79°
46°
6
66°
45°
7
58°
40°
8
56°
36°
9
53°
42°
10
64°
46°
11
59°
39°
12
62°
33°
13
59°
44°
14
59°
45°
15
62°
45°
16
78°
40°
17
84°
56°
18
91°
58°
19
89°
63°
20
82°
55°
21
63°
48°
22
61°
42°
23
52°
44°
24
52°
45°
25
73°
51°
26
80°
48°
27
83°
55°
28
68°
50°
29
73°
46°
30
63°
38°
31
70°
46°
1
67°
44°
2
67°
45°
3
69°
46°
4
78°
52°
5
83°
59°
6
79°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mongaup Valley
Mongaup Valley's May 2026 forecast shows daily high temperatures ranging from 63° to 83°, with overnight lows between 38° and 59°. The average high for May is 72° with an average low of 48°. 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 Mongaup Valley. See also: June | July | August.