S
M
T
W
T
F
S
26
59°
32°
27
59°
28°
28
63°
27°
29
57°
38°
30
59°
39°
1
56°
44°
2
59°
40°
3
49°
33°
4
N/A
5
69°
52°
6
64°
51°
7
59°
41°
8
54°
41°
9
61°
41°
10
61°
45°
11
62°
44°
12
58°
39°
13
60°
38°
14
63°
42°
15
62°
45°
16
61°
42°
17
60°
40°
18
61°
44°
19
67°
44°
20
65°
43°
21
66°
45°
22
66°
46°
23
65°
46°
24
66°
45°
25
65°
45°
26
63°
46°
27
67°
46°
28
67°
45°
29
64°
46°
30
64°
46°
31
65°
47°
1
64°
47°
2
68°
46°
3
65°
48°
4
69°
48°
5
65°
46°
6
66°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Amherst
Amherst's May 2026 forecast shows daily high temperatures ranging from 54° to 69°, with overnight lows between 38° and 52°. The average high for May is 64° with an average low of 45°. 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 Amherst. See also: June | July | August.