Castle Rock, Colorado Climate
United States
Pop. 55,591 Elev. 1,903 m / 6,244 ft
TZ: America/Denver (UTC-6) ·
Castle Rock has harsh winters with January lows averaging 5°F (-15°C), and mild summers with July highs of 84°F (29°C). Rain falls on about 24 days per year (15.2 in / 386 mm total), with snow on 6 days and 39 in (986 mm) of annual accumulation. The city averages 176 sunny days per year.
| Temperature | 84°F (29°C) high | 5°F (-15°C) low |
| Feels like | 85°F (29°C) high | 5°F (-15°C) low |
| Rain | 24 days | 15.2 in (386 mm) /yr |
| Snow | 6 days | 38.8 in (986 mm) /yr |
| Sky | 176 sunny | 13 stormy |
| Wind | 2.4 mph (1.1 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, Oct
Sky & Air by Month
Cloud cover (%)
37
Jan 42
Feb 43
Mar 49
Apr 52
May 45
Jun 49
Jul 45
Aug 44
Sep 28
Oct 42
Nov 37
Dec Humidity (%)
66
Jan 54
Feb 40
Mar 43
Apr 51
May 50
Jun 46
Jul 46
Aug 54
Sep 42
Oct 40
Nov 45
Dec Weather Days by Month
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 35 mi Denver International Airport (DEN)
Ski resort 2 mi Castle hill
National park 39 mi Florissant Fossil Beds National Monument
Mountain peak
(7,474 ft) 7 mi Dawson Butte
Hospital 3 mi AdventHealth Castle Rock Emergency Department
Hiking trail 10 mi Denver Orbital Trail - Segment 11
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 34°F 1°C | 5°F -15°C | 0.0 in 0 mm | 11.2 in285 mm | 19 |
| February | 45°F 7°C | 18°F -8°C | 0.0 in 1 mm | 6.3 in161 mm | 14 |
| March | 56°F 13°C | 28°F -2°C | 0.6 in 14 mm | 6.5 in165 mm | 12 |
| April | 60°F 16°C | 31°F 0°C | 0.5 in 11 mm | 6.3 in161 mm | 11 |
| May | 67°F 19°C | 40°F 5°C | 3.1 in 80 mm | 2.6 in66 mm | 13 |
| June | 79°F 26°C | 51°F 11°C | 2.8 in 71 mm | — | 15 |
| July | 84°F 29°C | 55°F 13°C | 2.4 in 60 mm | — | 10 |
| August | 82°F 28°C | 55°F 13°C | 3.1 in 78 mm | — | 13 |
| September | 73°F 23°C | 47°F 8°C | 1.7 in 43 mm | — | 13 |
| October | 66°F 19°C | 39°F 4°C | 0.6 in 16 mm | 0.1 in2 mm | 23 |
| November | 58°F 14°C | 30°F -1°C | 0.4 in 10 mm | 0.5 in12 mm | 15 |
| December | 53°F 11°C | 25°F -4°C | 0.0 in 1 mm | 5.3 in134 mm | 18 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 19 | 0 |
| February | 14 | 0 |
| March | 12 | 0 |
| April | 11 | 0 |
| May | 13 | 2 |
| June | 15 | 3 |
| July | 10 | 3 |
| August | 13 | 4 |
| September | 13 | 0 |
| October | 23 | 1 |
| November | 15 | 0 |
| December | 18 | 0 |