S
M
T
W
T
F
S
29
63°
28°
30
70°
55°
31
77°
61°
1
61°
43°
2
80°
43°
3
77°
61°
4
80°
52°
5
52°
36°
6
54°
31°
7
42°
28°
8
64°
23°
9
74°
48°
10
72°
46°
11
58°
38°
12
79°
43°
13
82°
65°
14
81°
60°
15
84°
60°
16
83°
60°
17
76°
54°
18
77°
47°
19
54°
39°
20
49°
31°
21
74°
31°
22
77°
55°
23
78°
53°
24
80°
52°
25
64°
47°
26
64°
45°
27
75°
42°
28
74°
54°
29
57°
42°
30
53°
39°
1
50°
36°
2
50°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Walnut Creek
Walnut Creek's April 2026 forecast shows daily high temperatures ranging from 50° to 57°, with overnight lows between 34° and 42°. The average high for April is 53° with an average low of 38°. 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 Walnut Creek. See also: May | June | July.