April weather in Castle Rock, CO
The average temperature in Castle Rock in April is 45.8°F (32.5°F–59.1°F). Average precipitation: 2.08 inches. Average snowfall is 8.3 inches.
April is a spring month in Castle Rock, and is cooler than the annual average of 49.5°F. Daily temperatures swing about 26.6°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 13h 3m. For travel, April is cool.
Avg High
59.1°F
Avg Low
32.5°F
Precipitation
2.08 in
Snow
8.3 in
April records in Castle Rock
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 77.0°F (2012) | 0.0°F (1897) | 0.66 in (1979) |
| April 2 | 81.0°F (2012) | -7.1°F (1975) | 0.40 in (1989) |
| April 3 | 80.1°F (2011) | 5.0°F (1975) | 2.16 in (1986) |
| April 4 | 80.1°F (2021) | 0.0°F (1968) | 0.81 in (1986) |
| April 5 | 80.1°F (2021) | 6.1°F (2023) | 1.20 in (1900) |
| April 6 | 82.0°F (1991) | -4.0°F (1983) | 0.65 in (1916) |
| April 7 | 78.1°F (1978) | 6.1°F (1916) | 0.82 in (1993) |
| April 8 | 79.0°F (2020) | -8.0°F (1909) | 0.92 in (1913) |
| April 9 | 73.9°F (1995) | 3.9°F (1973) | 1.10 in (1978) |
| April 10 | 80.1°F (1977) | 5.0°F (1989) | 0.81 in (2005) |
| April 11 | 80.1°F (1899) | -2.9°F (1900) | 2.50 in (2001) |
| April 12 | 84.0°F (2023) | 1.9°F (1997) | 0.80 in (1896) |
| April 13 | 84.9°F (2025) | -2.0°F (1997) | 2.69 in (1967) |
| April 14 | 82.9°F (2006) | 6.1°F (1922) | 0.67 in (1996) |
| April 15 | 82.0°F (2002) | 12.0°F (1912) | 2.55 in (1921) |
| April 16 | 80.1°F (2002) | 3.9°F (1992) | 1.25 in (1900) |
| April 17 | 78.1°F (1987) | -4.0°F (1901) | 1.47 in (1914) |
| April 18 | 80.1°F (1987) | -0.9°F (1922) | 1.14 in (2009) |
| April 19 | 81.0°F (1902) | 10.0°F (1966) | 0.78 in (2003) |
| April 20 | 88.0°F (2022) | 7.0°F (1893) | 1.25 in (1907) |
| April 21 | 84.0°F (1989) | 7.0°F (1907) | 0.82 in (1926) |
| April 22 | 82.9°F (1989) | 9.0°F (1928) | 1.60 in (1999) |
| April 23 | 89.1°F (2022) | 12.9°F (1968) | 1.53 in (2004) |
| April 24 | 81.0°F (1989) | 15.1°F (1913) | 1.53 in (2010) |
| April 25 | 84.0°F (1981) | 10.9°F (1929) | 1.30 in (1997) |
| April 26 | 86.0°F (1927) | 14.0°F (1924) | 1.07 in (1965) |
| April 27 | 91.0°F (1981) | 16.0°F (1908) | 1.24 in (2024) |
| April 28 | 81.0°F (2020) | 16.0°F (1906) | 1.00 in (1896) |
| April 29 | 80.1°F (2022) | 9.0°F (1908) | 0.90 in (1900) |
| April 30 | 82.0°F (1913) | 10.9°F (1894) | 1.00 in (1894) |