S
M
T
W
T
F
S
29
65°
45°
30
73°
59°
31
84°
62°
1
84°
61°
2
83°
61°
3
83°
62°
4
85°
65°
5
71°
56°
6
67°
50°
7
78°
54°
8
70°
53°
9
72°
47°
10
78°
51°
11
85°
54°
12
86°
56°
13
83°
60°
14
86°
60°
15
85°
60°
16
85°
63°
17
90°
64°
18
84°
64°
19
69°
49°
20
77°
44°
21
79°
53°
22
83°
60°
23
83°
58°
24
81°
59°
25
73°
61°
26
82°
57°
27
81°
58°
28
79°
62°
29
78°
60°
30
77°
60°
1
73°
52°
2
72°
48°
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 72° to 82°, with overnight lows between 48° and 62°. The average high for April is 77° 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 Walnut Creek. See also: May | June | July.