S
M
T
W
T
F
S
26
85°
61°
27
86°
61°
28
76°
67°
29
81°
65°
30
73°
60°
1
65°
57°
2
70°
44°
3
73°
47°
4
78°
53°
5
79°
63°
6
80°
61°
7
70°
45°
8
72°
46°
9
77°
54°
10
78°
59°
11
78°
58°
12
80°
56°
13
81°
57°
14
80°
59°
15
83°
58°
16
78°
61°
17
79°
62°
18
78°
62°
19
80°
63°
20
78°
63°
21
79°
59°
22
79°
56°
23
77°
56°
24
78°
57°
25
79°
59°
26
79°
57°
27
78°
57°
28
79°
58°
29
81°
63°
30
81°
64°
31
82°
66°
1
81°
66°
2
82°
65°
3
82°
64°
4
83°
66°
5
83°
67°
6
84°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Demarest
Demarest's May 2026 forecast shows daily high temperatures ranging from 70° to 84°, with overnight lows between 44° and 67°. The average high for May is 79° with an average low of 59°. 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 Demarest. See also: June | July | August.