Climate almanac
Castle Rock
Colorado, US · 39.37°, -104.86°
What is the climate like in Castle Rock?
The best time to visit Castle Rock is typically June – October, with trip comfort peaking in September (8.4/10). Castle Rock is warmest in July, when daily highs average 84°F (29°C), and coolest in January, when lows fall to about 13°F (-11°C). The wettest month is typically May and the driest is December; the year sees roughly 19 in of precipitation.
- Best time to visitJune – October — comfort peaks in September (8.4/10)
- Warmest monthJuly — average high 84°F (29°C)
- Coolest monthJanuary — average low 13°F (-11°C)
- Wettest monthMay (3.5 in)
- Driest monthDecember (0.6 in)
- Annual precipitation19 in