S
M
T
W
T
F
S
26
83°
70°
27
94°
73°
28
84°
69°
29
72°
59°
30
63°
59°
1
64°
48°
2
76°
42°
3
81°
51°
4
82°
59°
5
92°
63°
6
63°
52°
7
72°
49°
8
74°
54°
9
90°
63°
10
82°
63°
11
78°
57°
12
85°
53°
13
91°
55°
14
91°
66°
15
88°
68°
16
87°
67°
17
86°
74°
18
90°
76°
19
80°
66°
20
80°
68°
21
78°
66°
22
85°
67°
23
81°
64°
24
84°
65°
25
85°
67°
26
86°
66°
27
84°
68°
28
86°
67°
29
85°
66°
30
88°
68°
31
89°
67°
1
87°
71°
2
86°
70°
3
85°
66°
4
84°
64°
5
85°
66°
6
86°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lincolnshire
Lincolnshire's May 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 64° and 76°. The average high for May is 85° with an average low of 67°. 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 Lincolnshire. See also: June | July | August.