S
M
T
W
T
F
S
27
62°
39°
28
58°
38°
29
68°
36°
30
63°
44°
1
67°
34°
2
74°
32°
3
80°
37°
4
68°
47°
5
54°
35°
6
67°
38°
7
72°
37°
8
79°
40°
9
82°
38°
10
88°
45°
11
70°
49°
12
80°
49°
13
53°
43°
14
53°
42°
15
56°
37°
16
59°
34°
17
68°
37°
18
53°
42°
19
59°
37°
20
60°
44°
21
65°
36°
22
74°
37°
23
73°
37°
24
76°
38°
25
80°
39°
26
83°
44°
27
81°
47°
28
83°
46°
29
87°
50°
30
82°
51°
31
89°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Firth
Firth's May 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Firth. See also: June | July | August.