As of 01:12 PDT

Rialto, CA weather in April

77°

Rialto, Sunday, 9 August, 01:12

Clear. Feels like 76°. High 101°, low 72°.

Pressure29.88 inHg

Wind1.8 mph SW

Humidity38%

Visibility6.2 mi

Dew point50°

See detailed hourly forecast

In April, Rialto, CA averages a high of 70.7° and a low of 47.3°. About 1.3 inches of precipitation fall over the month (5 wet days). The record high is 98.8° (1989) and the record low 31.8° (1999). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	66.7°	45.9°	30%	90.9° (1966)	36.7° (1970)
2	66.9°	44.8°	27%	86.5° (1961)	31.8° (1999)
3	67.8°	45.1°	17%	93.2° (1961)	34.5° (1967)
4	68.7°	45.3°	23%	90.5° (1989)	33.6° (2023)
5	68.5°	45.7°	22%	95.7° (1989)	35.4° (2023)
6	68.5°	46.2°	15%	98.6° (1989)	35.8° (1967)
7	69.6°	46.2°	17%	98.8° (1989)	35.1° (1964)
8	69.4°	46.6°	17%	95.7° (2022)	35.8° (1998)
9	70.5°	46.8°	15%	90.9° (2018)	34.5° (1999)
10	71.8°	46.9°	10%	90.7° (2018)	31.8° (1999)
11	70.7°	47.8°	15%	90.3° (2025)	35.4° (1965)
12	70.7°	47.5°	15%	88.9° (1990)	34.7° (1967)
13	70.7°	46.9°	13%	93.7° (1985)	37.8° (2001)
14	70°	46.9°	20%	92.1° (1984)	36.7° (1983)
15	70.2°	46.6°	20%	92.3° (1987)	37.4° (1965)
16	70.3°	46.9°	15%	89.4° (1987)	34.2° (1998)
17	69.4°	47.1°	22%	86.5° (1980)	33.6° (1976)
18	69.1°	47.8°	23%	90.3° (2019)	38.7° (1963)
19	71.1°	46.8°	13%	90.9° (2009)	35.4° (1967)
20	72.1°	47.5°	10%	95.7° (2009)	36.3° (1967)
21	72°	48°	18%	95° (2009)	38.1° (1973)
22	71.2°	47.8°	17%	93° (2017)	34.3° (1963)
23	71.6°	47.8°	8%	89.1° (2019)	36.7° (1970)
24	71.6°	48.4°	15%	93.2° (2020)	37.4° (1970)
25	72.7°	48.6°	15%	90.9° (2004)	39.2° (1960)
26	73.4°	48.9°	17%	94.5° (2004)	37.9° (1964)
27	73.9°	49.5°	8%	95.2° (2004)	37.8° (1971)
28	73.4°	49.5°	13%	92.8° (2007)	38.7° (1963)
29	74.3°	49.8°	5%	95.4° (1981)	34.3° (1970)
30	74.5°	50°	10%	96.1° (2021)	37.2° (1970)