Climate and monthly weather forecast
Castle Rock, MN

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Weather in January

January, the same as December, in Castle Rock, Minnesota, is a freezing cold winter month, with temperature in the range of an average low of 7.7°F (-13.5°C) and an average high of 20.8°F (-6.2°C). Castle Rock experiences its lowest average temperatures in January, reaching a peak of 20.8°F (-6.2°C) and a minimum of 7.7°F (-13.5°C). Weather in January »

Weather in February

February, the last month of the winter in Castle Rock, is also a subzero cold month, with an average temperature fluctuating between 10.6°F (-11.9°C) and 24.6°F (-4.1°C). Castle Rock experiences an average high-temperature of a still freezing cold 24.6°F (-4.1°C) in February, subtly different from January's 20.8°F (-6.2°C). Weather in February »

Weather in March

March, the first month of the spring in Castle Rock, is a cold month, with an average temperature ranging between max 39.4°F (4.1°C) and min 25.3°F (-3.7°C). March signals a clear increase in the average high-temperature, soaring from February's freezing cold 24.6°F (-4.1°C) to an icy 39.4°F (4.1°C). Weather in March »

Weather in April

April is a fresh spring month in Castle Rock, Minnesota, with an average temperature varying between 52.9°F (11.6°C) and 37.2°F (2.9°C). As Castle Rock, Minnesota, transitions into April, the average high-temperature shows a change, moving from a wintry 39.4°F (4.1°C) in March to a fresh 52.9°F (11.6°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Castle Rock, Minnesota, with an average temperature ranging between min 49.1°F (9.5°C) and max 65.8°F (18.8°C). In May, the average high-temperature increases from a fresh 52.9°F (11.6°C) in April to a refreshing 65.8°F (18.8°C). Weather in May »

Weather in June

June, the first month of the summer in Castle Rock, is a moderately hot month, with an average temperature varying between 58.8°F (14.9°C) and 75.4°F (24.1°C). The arrival of June brings a temperature shift, with the average high-temperature escalating from an enjoyable 65.8°F (18.8°C) in May to a moderately hot 75.4°F (24.1°C). Weather in June »

Weather in July

July, like June, in Castle Rock, Minnesota, is another warm summer month, with temperature in the range of an average low of 62.4°F (16.9°C) and an average high of 79.5°F (26.4°C). July is the warmest month, with an average high-temperature of 79.5°F (26.4°C) and an average low-temperature of 62.4°F (16.9°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Castle Rock, Minnesota, with an average temperature varying between 77.5°F (25.3°C) and 59.4°F (15.2°C). The advent of August brings an average high-temperature of a still moderately hot 77.5°F (25.3°C), exhibiting minor difference from the previous month. Weather in August »

Weather in September

September, the first month of the autumn in Castle Rock, is also an agreeable month, with an average temperature varying between 52.5°F (11.4°C) and 71.1°F (21.7°C). In Castle Rock, the average high-temperature in September gently drops from a moderately hot 77.5°F (25.3°C) in August to a pleasant 71.1°F (21.7°C). Weather in September »

Weather in October

October, the same as September, in Castle Rock, Minnesota, is another refreshing autumn month, with an average temperature fluctuating between 41°F (5°C) and 55.6°F (13.1°C). October brings a significant decrease in the average high-temperature, moving down from a pleasant 71.1°F (21.7°C) in September to a mild 55.6°F (13.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a wintry month in Castle Rock, Minnesota, with an average temperature ranging between min 28.8°F (-1.8°C) and max 41°F (5°C). With the beginning of November, Castle Rock's average high-temperature experiences a significant decrease, moving from a refreshing 55.6°F (13.1°C) in October to an icy 41°F (5°C). Weather in November »

Weather in December

The first month of the winter, December, is also a subzero cold month in Castle Rock, Minnesota, with an average temperature fluctuating between 26.1°F (-3.3°C) and 15.4°F (-9.2°C). The start of December signals a clear decrease in the average high-temperature, falling from a cold 41°F (5°C) in November to a subzero cold 26.1°F (-3.3°C). Weather in December »
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

January, characterized by an average high temperature of 20.8°F (-6.2°C) and a low temperature of 7.7°F (-13.5°C), is generally the coldest month.

What is the most humid month?

With an average relative humidity of 91%, January is the most humid month.

What is the driest month?

January is the month with the least rainfall in Castle Rock, Minnesota. Rain falls for 3.1 days and accumulates 0.75" (19mm) of precipitation.

How many days does it rain?

Throughout the year, there are 126.4 rainfall days, and 24.76" (629mm) of precipitation is accumulated.

When does it snow?

Months with snowfall in Castle Rock are January through May, October through December.

How much does it snow in Castle Rock?

In Castle Rock, during the entire year, snow falls for 55.6 days and aggregates up to 22.36" (568mm) of snow.

What is the month with the least sunshine?

With an average of 3h of sunshine, January has the least sunshine of the year.

What is the month with the lowest UV index?

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index.

When does it snow the most?

February is the month with the most snowfall. Snow falls for 11.1 days and accumulates 6.1" (155mm) of snow.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.

What is the least humid month?

April and October, with an average relative humidity of 73%, are the least humid months.

What is the rainiest month?

June is the month with the most rainfall. Rain falls for 17.4 days and accumulates 4.21" (107mm) of precipitation.

When it does not snow?

June through September are months without snowfall in Castle Rock.

When are the longest days?

With an average of 15h and 30min of daylight, June has the longest days of the year.

What time of the year is the hottest?

July temperatures tend to peak at an average high of 79.5°F (26.4°C) and dip to a low of 62.4°F (16.9°C).

What month has the most sunshine?

With an average of 10h of sunshine, July has the most sunshine of the year.

When is the highest UV index?

July is the month with the highest UV index, with an average maximum UV index of 6.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 8h and 54min of daylight.

Average temperature
Castle Rock, MN

Average temperature - Castle Rock, MN

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (20.8°F).

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).

Average pressure
Castle Rock, MN

Average pressure - Castle Rock, MN

The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed
Castle Rock, MN

Average wind speed - Castle Rock, MN

The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is July (7mph).

Average humidity
Castle Rock, MN

Average humidity - Castle Rock, MN

The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are April and October (73%).

Average rainfall
Castle Rock, MN

Average rainfall - Castle Rock, MN

The wettest month (with the highest rainfall) is June (4.21").
The driest month (with the least rainfall) is January (0.75").

Average rainfall days
Castle Rock, MN

Average rainfall days - Castle Rock, MN

The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.8 days).

Average snowfall
Castle Rock, MN

Average snowfall - Castle Rock, MN

The month with the highest snowfall is February (6.1").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Castle Rock, MN

Average snowfall days - Castle Rock, MN

The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Castle Rock, MN

Average daylight / Average sunshine - Castle Rock, MN

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

The month with the most sunshine is July (Average sunshine: 10h).
The month with the least sunshine is January (Average sunshine: 3h).

Average sunshine days
Castle Rock, MN

Average sunshine days - Castle Rock, MN

The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is June (10.2 days).

Average UV index
Castle Rock, MN

Average UV index - Castle Rock, MN

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average visibility
Castle Rock, MN

Average visibility - Castle Rock, MN

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).

Castle Rock, Minnesota, USA

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