S
M
T
W
T
F
S
26
85°
73°
27
84°
74°
28
84°
74°
29
85°
72°
30
85°
71°
1
83°
76°
2
79°
73°
3
83°
72°
4
82°
67°
5
83°
69°
6
84°
72°
7
83°
70°
8
83°
71°
9
84°
71°
10
82°
74°
11
83°
72°
12
79°
71°
13
82°
74°
14
82°
72°
15
81°
71°
16
82°
72°
17
82°
72°
18
82°
73°
19
83°
73°
20
82°
72°
21
81°
71°
22
81°
66°
23
80°
72°
24
80°
71°
25
81°
68°
26
82°
69°
27
82°
67°
28
76°
65°
29
78°
64°
30
76°
62°
31
78°
62°
1
78°
64°
2
79°
69°
3
76°
68°
4
76°
65°
5
75°
66°
6
76°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Black River
Black River's May 2026 forecast shows daily high temperatures ranging from 75° to 79°, with overnight lows between 62° and 69°. The average high for May is 77° with an average low of 65°. 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 Black River. See also: June | July | August.
