S
M
T
W
T
F
S
26
68°
26°
27
74°
28°
28
66°
29°
29
63°
30°
30
49°
42°
1
55°
29°
2
49°
27°
3
49°
27°
4
63°
24°
5
79°
31°
6
59°
43°
7
57°
28°
8
50°
26°
9
59°
23°
10
66°
33°
11
55°
27°
12
52°
24°
13
48°
27°
14
56°
41°
15
62°
49°
16
72°
52°
17
67°
36°
18
73°
50°
19
80°
62°
20
73°
38°
21
53°
33°
22
57°
37°
23
62°
43°
24
63°
45°
25
62°
47°
26
63°
43°
27
65°
48°
28
67°
45°
29
64°
42°
30
62°
47°
31
64°
46°
1
67°
46°
2
63°
45°
3
62°
46°
4
62°
48°
5
64°
48°
6
71°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Upper Dam
Upper Dam's May 2026 forecast shows daily high temperatures ranging from 53° to 80°, with overnight lows between 33° and 62°. The average high for May is 65° with an average low of 45°. 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 Upper Dam. See also: June | July | August.
