S
M
T
W
T
F
S
29
81°
73°
30
80°
73°
31
81°
75°
1
81°
75°
2
82°
75°
3
82°
75°
4
82°
74°
5
82°
73°
6
82°
73°
7
82°
73°
8
82°
73°
9
82°
75°
10
82°
75°
11
80°
72°
12
80°
73°
13
81°
72°
14
82°
74°
15
81°
73°
16
81°
72°
17
81°
73°
18
83°
76°
19
83°
76°
20
83°
76°
21
80°
72°
22
80°
73°
23
80°
74°
24
81°
73°
25
81°
74°
26
83°
76°
27
82°
75°
28
82°
75°
29
83°
76°
30
84°
75°
1
85°
76°
2
86°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Marathon
Marathon's April 2026 forecast shows daily high temperatures ranging from 81° to 86°, with overnight lows between 73° and 76°. The average high for April is 83° with an average low of 75°. 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 Marathon. See also: May | June | July.
