S
M
T
W
T
F
S
26
55°
41°
27
67°
36°
28
56°
47°
29
56°
44°
30
45°
33°
1
47°
29°
2
43°
31°
3
57°
27°
4
69°
40°
5
71°
58°
6
58°
42°
7
57°
32°
8
57°
35°
9
61°
45°
10
61°
40°
11
60°
34°
12
64°
29°
13
65°
43°
14
44°
40°
15
64°
41°
16
72°
44°
17
80°
60°
18
85°
60°
19
81°
67°
20
70°
49°
21
63°
46°
22
64°
45°
23
49°
46°
24
71°
60°
25
74°
56°
26
78°
60°
27
76°
53°
28
77°
47°
29
73°
46°
30
70°
49°
31
71°
48°
1
78°
56°
2
77°
55°
3
76°
54°
4
78°
49°
5
78°
54°
6
77°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Big Run
Big Run's May 2026 forecast shows daily high temperatures ranging from 49° to 78°, with overnight lows between 45° and 60°. The average high for May is 73° with an average low of 52°. 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 Big Run. See also: June | July | August.
