S
M
T
W
T
F
S
26
64°
44°
27
64°
44°
28
60°
43°
29
61°
43°
30
64°
42°
1
67°
46°
2
60°
43°
3
62°
42°
4
59°
43°
5
54°
40°
6
55°
42°
7
56°
43°
8
56°
41°
9
57°
40°
10
56°
46°
11
57°
47°
12
59°
46°
13
61°
44°
14
58°
41°
15
62°
45°
16
63°
44°
17
63°
48°
18
64°
48°
19
64°
47°
20
59°
47°
21
58°
43°
22
60°
49°
23
59°
48°
24
61°
48°
25
61°
49°
26
62°
49°
27
60°
46°
28
62°
50°
29
64°
50°
30
62°
48°
31
64°
50°
1
66°
50°
2
62°
48°
3
61°
46°
4
63°
48°
5
64°
47°
6
62°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Northampton
Northampton's May 2026 forecast shows daily high temperatures ranging from 54° to 67°, with overnight lows between 40° and 51°. The average high for May is 61° with an average low of 46°. 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 Northampton. See also: June | July | August.
