S
M
T
W
T
F
S
29
93°
56°
30
84°
53°
31
72°
59°
1
73°
54°
2
70°
55°
3
81°
50°
4
88°
48°
5
90°
52°
6
82°
60°
7
82°
53°
8
84°
55°
9
79°
57°
10
79°
58°
11
73°
57°
12
66°
50°
13
64°
48°
14
73°
46°
15
79°
48°
16
75°
54°
17
81°
52°
18
84°
49°
19
84°
57°
20
81°
52°
21
72°
51°
22
72°
52°
23
79°
48°
24
77°
51°
25
70°
57°
26
66°
49°
27
66°
52°
28
77°
44°
29
81°
50°
30
82°
51°
1
82°
56°
2
86°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in San Bernardino
San Bernardino's April 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for April is ° with an average low of °. 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 San Bernardino. See also: May | June | July.
