S
M
T
W
T
F
S
26
72°
55°
27
73°
54°
28
70°
46°
29
82°
55°
30
75°
57°
1
66°
55°
2
59°
46°
3
70°
45°
4
79°
43°
5
81°
46°
6
82°
59°
7
79°
57°
8
73°
50°
9
75°
57°
10
86°
57°
11
82°
55°
12
72°
46°
13
81°
48°
14
79°
52°
15
79°
48°
16
88°
50°
17
91°
59°
18
91°
63°
19
91°
61°
20
93°
61°
21
93°
63°
22
91°
68°
23
79°
68°
24
84°
64°
25
77°
70°
26
86°
70°
27
84°
70°
28
91°
70°
29
86°
70°
30
90°
63°
31
78°
64°
1
81°
65°
2
77°
55°
3
79°
58°
4
82°
60°
5
87°
62°
6
91°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hartsville
Hartsville's May 2026 forecast shows daily high temperatures ranging from 77° to 91°, with overnight lows between 55° and 67°. The average high for May is 83° with an average low of 62°. 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 Hartsville. See also: June | July | August.
