S
M
T
W
T
F
S
26
78°
56°
27
65°
54°
28
76°
51°
29
69°
57°
30
75°
54°
1
79°
59°
2
76°
62°
3
71°
59°
4
62°
54°
5
60°
54°
6
64°
50°
7
54°
42°
8
59°
52°
9
60°
52°
10
58°
51°
11
61°
46°
12
68°
48°
13
65°
48°
14
69°
47°
15
70°
53°
16
70°
57°
17
64°
57°
18
59°
56°
19
58°
51°
20
58°
51°
21
57°
49°
22
63°
43°
23
62°
46°
24
61°
51°
25
N/A
26
66°
56°
27
62°
48°
28
60°
52°
29
60°
50°
30
62°
48°
31
59°
45°
1
57°
50°
2
60°
49°
3
59°
50°
4
59°
47°
5
58°
48°
6
58°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Reservoir
Reservoir's May 2026 forecast shows daily high temperatures ranging from 57° to 66°, with overnight lows between 45° and 56°. The average high for May is 60° with an average low of 49°. 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 Reservoir. See also: June | July | August.
