S
M
T
W
T
F
S
26
69°
29°
27
73°
33°
28
69°
44°
29
75°
40°
30
80°
38°
1
86°
47°
2
87°
48°
3
90°
48°
4
91°
54°
5
89°
54°
6
90°
54°
7
89°
53°
8
86°
54°
9
84°
53°
10
86°
54°
11
83°
52°
12
82°
51°
13
80°
54°
14
88°
52°
15
75°
48°
16
77°
50°
17
75°
51°
18
74°
50°
19
71°
50°
20
74°
50°
21
74°
52°
22
72°
48°
23
75°
50°
24
79°
52°
25
82°
54°
26
83°
55°
27
83°
54°
28
82°
55°
29
80°
55°
30
83°
56°
31
78°
54°
1
77°
54°
2
80°
56°
3
83°
56°
4
78°
54°
5
80°
55°
6
82°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Pasco
Pasco's May 2026 forecast shows daily high temperatures ranging from 71° to 91°, with overnight lows between 47° and 57°. The average high for May is 81° with an average low of 53°. 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 Pasco. See also: June | July | August.