S
M
T
W
T
F
S
26
66°
28°
27
68°
30°
28
68°
32°
29
51°
36°
30
55°
41°
1
51°
34°
2
54°
40°
3
44°
36°
4
56°
41°
5
71°
51°
6
57°
47°
7
56°
40°
8
50°
36°
9
53°
35°
10
54°
41°
11
56°
42°
12
58°
39°
13
58°
38°
14
61°
40°
15
60°
39°
16
67°
43°
17
66°
39°
18
60°
44°
19
68°
44°
20
67°
45°
21
63°
45°
22
67°
46°
23
64°
45°
24
66°
44°
25
62°
45°
26
61°
42°
27
62°
46°
28
63°
43°
29
62°
42°
30
63°
42°
31
66°
47°
1
64°
43°
2
65°
41°
3
66°
48°
4
69°
48°
5
65°
44°
6
69°
50°
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 44° to 71°, with overnight lows between 35° and 51°. The average high for May is 61° with an average low of 43°. 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.
