Castle Rock
Colorado, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Castle Rock, CO

An aerial view over the scenic setting of Castle Rock City in Colorado, a view of The Rock and the deep veins of the road network
An aerial view over the scenic setting of Castle Rock City in Colorado, a view of The Rock and the deep veins of the road network
January, like December, is another chilly winter month in Castle Rock, Colorado, with average temperature varying between 45.5°F (7.5°C) and 17.8°F (-7.9°C). In Castle Rock, the average high-temperature is practically the same as in December - a still frosty 45.5°F (7.5°C). Weather in January »
February, the last month of the winter, in Castle Rock, is also a frosty month, with temperature in the range of an average high of 46.4°F (8°C) and an average low of 19.8°F (-6.8°C). In February, the average high-temperature is relatively the same as in January - a still chilly 46.4°F (8°C). Weather in February »

March, the first month of the spring, in Castle Rock, is a cool month, with average temperature varying between 52.5°F (11.4°C) and 26.2°F (-3.2°C). In March, the average high-temperature slightly increases, from a chilly 46.4°F (8°C) in February, to a cool 52.5°F (11.4°C). Weather in March »

April is a mild spring month in Castle Rock, Colorado, with average temperature varying between 59.2°F (15.1°C) and 32.7°F (0.4°C). In April, the average high-temperature marginally rises, from a cool 52.5°F (11.4°C) in March, to a moderate 59.2°F (15.1°C). Weather in April »

May, the last month of the spring, in Castle Rock, is a pleasant month, with average temperature ranging between max 69.1°F (20.6°C) and min 42.1°F (5.6°C). In May, the average high-temperature rises, from a moderate 59.2°F (15.1°C) in April, to a pleasant 69.1°F (20.6°C). Weather in May »

June, the first month of the summer, in Castle Rock, is a moderately hot month, with average temperature fluctuating between 50.4°F (10.2°C) and 79°F (26.1°C). In June, the average high-temperature increases, from a pleasant 69.1°F (20.6°C) in May, to a warm 79°F (26.1°C). Weather in June »

July, the same as June, is another warm summer month in Castle Rock, Colorado, with temperature in the range of an average low of 55.8°F (13.2°C) and an average high of 85.3°F (29.6°C). With an average high-temperature of 85.3°F (29.6°C) and an average low-temperature of 55.8°F (13.2°C), July is the warmest month. Weather in July »

August, the last month of the summer, in Castle Rock, is another warm month, with average temperature fluctuating between 54.3°F (12.4°C) and 82.8°F (28.2°C). In August, the average high-temperature is essentially the same as in July - a still warm 82.8°F (28.2°C). Weather in August »

The first month of the autumn, September, is also a moderately hot month in Castle Rock, Colorado, with average temperature fluctuating between 75.6°F (24.2°C) and 45.9°F (7.7°C). In September, the average high-temperature marginally drops, from 82.8°F (28.2°C) in August, to a still moderately hot 75.6°F (24.2°C). Weather in September »

October, the same as September, is another comfortable autumn month in Castle Rock, Colorado, with average temperature ranging between max 64.6°F (18.1°C) and min 34.5°F (1.4°C). In Castle Rock, the average high-temperature in October decreases, from a warm 75.6°F (24.2°C) in September, to a comfortable 64.6°F (18.1°C). Weather in October »

November, the last month of the autumn, in Castle Rock, is another cool month, with average temperature varying between 53.2°F (11.8°C) and 25°F (-3.9°C). In Castle Rock, the average high-temperature decreases, from an enjoyable 64.6°F (18.1°C) in October, to a cool 53.2°F (11.8°C). Weather in November »

The first month of the winter, December, is also a frosty month in Castle Rock, Colorado, with average temperature ranging between min 17.6°F (-8°C) and max 44.8°F (7.1°C). December is the coldest month, with an average high-temperature of 44.8°F (7.1°C) and an average low-temperature of 17.6°F (-8°C). Weather in December »

How much does it rain in Castle Rock?

In Castle Rock, Colorado, during the entire year, the rain falls for 67.9 days and collects up to 18.8" (477.3mm) of precipitation.

What is the driest month in Castle Rock?

The month with the least rainfall is January when the rain falls for 3.5 days and typically collects 0.6" (15.7mm) of precipitation.

When does it snow in Castle Rock?

January through May, September through December are months with snowfall.

How much does it snow in Castle Rock?

In Castle Rock, during the entire year, snow falls for 22 days, and aggregates up to 61.8" (1569.8mm) of snow.

What is the snowiest month in Castle Rock?

March is the month with the most snowfall. Snow falls for 3.9 days and accumulates 14.7" (373.4mm) of snow.

When are the longest days in Castle Rock?

June has the longest days of the year, with an average of 14.9h of daylight.

What is the warmest month in Castle Rock?

The warmest month in Castle Rock, Colorado, is July, with an average high-temperature of 85.3°F (29.6°C) and an average low-temperature of 55.8°F (13.2°C).

What is the wettest month in Castle Rock?

The month with the most rainfall is August when the rain falls for 9.4 days and typically aggregates up to 2.7" (68.8mm) of precipitation.

What is the coldest month in Castle Rock?

The coldest month in Castle Rock is December, with an average high-temperature of 44.8°F (7.1°C) and an average low-temperature of 17.6°F (-8°C).

What is the month with the shortest days in Castle Rock?

December has the shortest days of the year in Castle Rock, Colorado, with an average of 9.4h of daylight.
Average temperature - Castle Rock, CO
Average rainfall - Castle Rock, CO
Average rainfall days - Castle Rock, CO

The month with the highest number of rainy days is August (9.4 days).
The month with the lowest number of rainy days is January (3.5 days).

Average snowfall days - Castle Rock, CO

The month with the highest number of snowfall days is March (3.9 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average daylight - Castle Rock, CO

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.4h).