S
M
T
W
T
F
S
26
69°
29°
27
73°
33°
28
69°
44°
29
75°
40°
30
80°
38°
1
84°
38°
2
90°
50°
3
88°
47°
4
89°
53°
5
84°
49°
6
90°
54°
7
85°
54°
8
79°
49°
9
81°
43°
10
84°
50°
11
85°
52°
12
82°
49°
13
81°
50°
14
83°
50°
15
80°
47°
16
77°
46°
17
91°
56°
18
70°
45°
19
70°
43°
20
71°
44°
21
81°
53°
22
82°
54°
23
80°
52°
24
82°
54°
25
84°
54°
26
82°
55°
27
82°
55°
28
81°
54°
29
83°
55°
30
84°
55°
31
85°
56°
1
86°
57°
2
85°
56°
3
85°
57°
4
84°
56°
5
84°
57°
6
83°
56°
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 70° to 91°, with overnight lows between 43° and 57°. The average high for May is 82° 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 Pasco. See also: June | July | August.