S
M
T
W
T
F
S
29
56°
21°
30
71°
41°
31
79°
58°
1
76°
51°
2
52°
42°
3
62°
41°
4
75°
46°
5
56°
43°
6
53°
36°
7
50°
31°
8
51°
23°
9
59°
26°
10
71°
36°
11
61°
41°
12
64°
30°
13
79°
48°
14
85°
52°
15
87°
57°
16
88°
59°
17
77°
56°
18
73°
53°
19
53°
34°
20
52°
27°
21
55°
40°
22
62°
42°
23
74°
46°
24
71°
44°
25
57°
46°
26
57°
43°
27
61°
46°
28
57°
45°
29
59°
44°
30
62°
43°
1
65°
45°
2
64°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Williamsport
Williamsport's April 2026 forecast shows daily high temperatures ranging from 52° to 74°, with overnight lows between 27° and 46°. The average high for April is 61° with an average low of 43°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Williamsport. See also: May | June | July.
