S
M
T
W
T
F
S
29
88°
48°
30
80°
50°
31
68°
57°
1
61°
55°
2
65°
43°
3
74°
38°
4
75°
39°
5
85°
46°
6
74°
45°
7
75°
45°
8
76°
49°
9
73°
54°
10
68°
53°
11
64°
49°
12
61°
46°
13
65°
44°
14
69°
48°
15
70°
50°
16
75°
49°
17
76°
52°
18
70°
50°
19
72°
50°
20
73°
49°
21
72°
49°
22
73°
50°
23
68°
48°
24
68°
47°
25
69°
49°
26
67°
47°
27
67°
48°
28
68°
46°
29
68°
46°
30
69°
47°
1
70°
49°
2
70°
53°
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 61° to 76°, with overnight lows between 44° and 54°. The average high for April is 69° with an average low of 49°. 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.