S
M
T
W
T
F
S
26
64°
37°
27
70°
43°
28
61°
46°
29
64°
45°
30
68°
46°
1
75°
48°
2
72°
52°
3
64°
52°
4
61°
51°
5
64°
41°
6
55°
41°
7
59°
45°
8
66°
41°
9
70°
43°
10
57°
37°
11
55°
34°
12
63°
34°
13
57°
43°
14
55°
39°
15
57°
41°
16
61°
39°
17
64°
48°
18
61°
45°
19
66°
50°
20
70°
54°
21
75°
52°
22
82°
55°
23
78°
61°
24
84°
54°
25
90°
59°
26
91°
59°
27
75°
55°
28
84°
61°
29
78°
52°
30
81°
56°
31
70°
54°
1
70°
59°
2
68°
52°
3
65°
52°
4
66°
51°
5
66°
51°
6
67°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Newmarket
Newmarket's May 2026 forecast shows daily high temperatures ranging from 65° to 84°, with overnight lows between 50° and 61°. The average high for May is 72° with an average low of 54°. 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 Newmarket. See also: June | July | August.