S
M
T
W
T
F
S
26
61°
44°
27
58°
41°
28
67°
33°
29
71°
37°
30
73°
37°
1
75°
48°
2
80°
46°
3
80°
44°
4
67°
46°
5
68°
42°
6
77°
47°
7
84°
49°
8
79°
47°
9
78°
48°
10
85°
52°
11
78°
47°
12
83°
52°
13
86°
55°
14
87°
48°
15
68°
38°
16
69°
39°
17
69°
40°
18
70°
40°
19
69°
39°
20
70°
40°
21
73°
46°
22
78°
48°
23
78°
46°
24
73°
46°
25
78°
49°
26
79°
49°
27
82°
50°
28
81°
49°
29
81°
48°
30
79°
46°
31
75°
45°
1
76°
45°
2
79°
49°
3
82°
51°
4
81°
51°
5
79°
52°
6
76°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fallon
Fallon's May 2026 forecast shows daily high temperatures ranging from 67° to 87°, with overnight lows between 38° and 55°. The average high for May is 77° with an average low of 47°. 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 Fallon. See also: June | July | August.