S
M
T
W
T
F
S
29
83°
53°
30
86°
68°
31
87°
71°
1
80°
66°
2
88°
66°
3
82°
56°
4
67°
49°
5
72°
41°
6
76°
42°
7
76°
47°
8
80°
52°
9
81°
56°
10
71°
61°
11
78°
57°
12
80°
65°
13
86°
71°
14
84°
65°
15
79°
64°
16
82°
64°
17
80°
53°
18
63°
46°
19
73°
45°
20
73°
51°
21
69°
58°
22
73°
65°
23
78°
63°
24
81°
54°
25
78°
62°
26
84°
61°
27
80°
49°
28
80°
61°
29
77°
54°
30
69°
50°
1
68°
51°
2
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Keystone Lake
Keystone Lake's April 2026 forecast shows daily high temperatures ranging from 68° to 84°, with overnight lows between 49° and 65°. The average high for April is 76° with an average low of 57°. 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 Keystone Lake. See also: May | June | July.
