March weather forecast
Castle Rock, WA

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Weather in March

The first month of the spring, March, is a cool month in Castle Rock, Washington, with an average temperature ranging between min 34.7°F (1.5°C) and max 50°F (10°C).

Temperature

Castle Rock's March average high-temperature settles at a fresh 50°F (10°C), showing a near match with the preceding month. Throughout March, an average low-temperature of 34.7°F (1.5°C) is experienced in Castle Rock.

Humidity

In Castle Rock, the average relative humidity in March is 87%.

Rainfall

In March, in Castle Rock, the rain falls for 17.5 days. Throughout March, 1.69" (43mm) of precipitation is accumulated. In Castle Rock, during the entire year, the rain falls for 157.3 days and collects up to 16.54" (420mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. March is the last month it regularly snows. During 1.3 snowfall days, in March, Castle Rock aggregates 0.79" (20mm) of snow. In Castle Rock, during the entire year, snow falls for 7 days and aggregates up to 2.99" (76mm) of snow.

Daylight

In Castle Rock, the average length of the day in March is 11h and 58min.
On the first day of March in Castle Rock, sunrise is at 6:48 am and sunset at 5:58 pm PST. On the last day of the month, sunrise is at 6:51 am and sunset at 7:39 pm PDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from PDT to PST.

Sunshine

In Castle Rock, the average sunshine in March is 4.8h.

UV index

The average daily maximum UV index in March in Castle Rock is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In March, the average maximum UV index of 3 translates into the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are March temperatures in Castle Rock?

The average high-temperature and low-temperature during March are 50°F (10°C) and 34.7°F (1.5°C) respectively.

What is the average humidity in March in Castle Rock?

In March, the average relative humidity in Castle Rock, Washington, is 87%.

How many days does it rain in March in Castle Rock?

In Castle Rock, in March, during 17.5 rainfall days, 1.69" (43mm) of precipitation is typically accumulated.

What is the last month it snows in Castle Rock?

March is the last month it regularly snows. During 1.3 snowfall days, in March, Castle Rock aggregates 0.79" (20mm) of snow.

What is the average length of the day in March in Castle Rock?

In March, the average day length is 11h and 58min.

When are sunrise and sunset in March in Castle Rock?

In March, on the first day of the month, sunrise is at 6:48 am and sunset at 5:58 pm PST. On the last day of the month, in Castle Rock, sunrise is at 6:51 am and sunset at 7:39 pm PDT.

When does Daylight Saving Time (DST) start in March in Castle Rock?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Castle Rock, Washington, and the time zone changes from PST to PDT. DST ends Sunday, November 3. 2024, at 2:00 am.

How long on average sun shines in March in Castle Rock?

In Castle Rock, the average sunshine duration in March is 4.8h.

What is the UV index intensity in March in Castle Rock?

The average daily maximum UV index in March in Castle Rock, Washington, is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Castle Rock, WA

Average temperature in March - Castle Rock, WA
  • Average high temperature in March: 50°F

The warmest month (with the highest average high temperature) is August (77.7°F).
The month with the lowest average high temperature is December (42.4°F).

  • Average low temperature in March: 34.7°F

The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (32.5°F).

Average pressure in March
Castle Rock, WA

Average pressure in March - Castle Rock, WA
  • Average pressure in March: 30.02"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

Average wind speed in March
Castle Rock, WA

Average wind speed in March - Castle Rock, WA
  • Average wind speed in March: 4.5mph

The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest months (with the lowest average wind speed) are August and September (3.7mph).

Average humidity in March
Castle Rock, WA

Average humidity in March - Castle Rock, WA
  • Average humidity in March: 87%

The months with the highest relative humidity are February and November (89%).
The months with the lowest relative humidity are July and August (73%).

Average rainfall in March
Castle Rock, WA

Average rainfall in March - Castle Rock, WA
  • Average rainfall in March: 1.69"

The wettest month (with the highest rainfall) is January (2.28").
The driest month (with the least rainfall) is August (0.31").

Average rainfall days in March
Castle Rock, WA

Average rainfall days in March - Castle Rock, WA
  • Average rainfall days in March: 17.5 days

The month with the highest number of rainy days is March (17.5 days).
The month with the least rainy days is July (6.1 days).

Average snowfall in March
Castle Rock, WA

Average snowfall in March - Castle Rock, WA
  • Average snowfall in March: 0.79"

The month with the highest snowfall is February (1.02").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in March
Castle Rock, WA

Average snowfall days in March - Castle Rock, WA
  • Average snowfall days in March: 1.3 days

The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in March /
Average sunshine in March
Castle Rock, WA

Average daylight in March / Average sunshine in March - Castle Rock, WA
  • Average daylight in March: 12h and 0min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in March: 4h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).

Average sunshine days in March
Castle Rock, WA

Average sunshine days in March - Castle Rock, WA
  • Average sunshine days in March: 11.5 days

The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is April (10.5 days).

Average UV index in March
Castle Rock, WA

Average UV index in March - Castle Rock, WA
  • Average UV index in March: 3

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in March
Castle Rock, WA

Average cloud cover in March - Castle Rock, WA
  • Average cloud cover in March: 64

The month with the most cloud cover is February (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 37).

Average visibility in March
Castle Rock, WA

Average visibility in March - Castle Rock, WA
  • Average visibility in March: 4mi

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

Castle Rock, Washington, USA

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