S
M
T
W
T
F
S
26
57°
31°
27
55°
30°
28
62°
45°
29
63°
38°
30
67°
40°
1
75°
45°
2
74°
46°
3
65°
51°
4
63°
46°
5
58°
42°
6
54°
38°
7
57°
42°
8
60°
44°
9
65°
48°
10
61°
46°
11
62°
45°
12
63°
48°
13
58°
45°
14
61°
45°
15
60°
46°
16
65°
49°
17
66°
48°
18
64°
45°
19
59°
44°
20
58°
44°
21
58°
43°
22
59°
43°
23
59°
44°
24
61°
48°
25
64°
48°
26
68°
51°
27
69°
50°
28
66°
49°
29
65°
45°
30
62°
44°
31
68°
51°
1
69°
48°
2
67°
48°
3
64°
45°
4
62°
49°
5
69°
52°
6
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Groningen
Groningen's May 2026 forecast shows daily high temperatures ranging from 54° to 70°, with overnight lows between 38° and 52°. The average high for May is 63° 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 Groningen. See also: June | July | August.