March weather forecast
Sumas, WA

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Weather in March

The first month of the spring, March, is a frosty month in Sumas, Washington, with an average temperature ranging between max 47.1°F (8.4°C) and min 34.9°F (1.6°C).

Temperature

Sumas records an average high-temperature of a frosty 47.1°F (8.4°C) as March arrives, nearly mirroring the previous month's climate. The average temperature in Sumas during March nights dips to an icy 34.9°F (1.6°C).

Humidity

The average relative humidity in March in Sumas is 85%.

Rainfall

In March, the rain falls for 20.5 days. Throughout March, 5.94" (151mm) of precipitation is accumulated. In Sumas, during the entire year, the rain falls for 188 days and collects up to 49.88" (1267mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In Sumas, Washington, in March, snow falls for 2.6 days, with typically accumulated 1.97" (50mm) of snow. Throughout the year, in Sumas, there are 14.7 snowfall days, and 10.2" (259mm) of snow is accumulated.

Daylight

In March, the average length of the day is 11h and 56min.
On the first day of the month, sunrise is at 6:49 am and sunset at 5:53 pm PST. On the last day of March, sunrise is at 6:46 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

The average sunshine in March is 5.4h.

UV index

In March, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In March, a daily maximum UV index of 3 leads to the following instructions:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average March temperature in Sumas?

March temperatures in Sumas, Washington, vary between a high-temperature of 47.1°F (8.4°C) and a low-temperature of 34.9°F (1.6°C).

What is the average humidity in March in Sumas?

In March, the average relative humidity is 85%.

How many days does it rain in March in Sumas?

In Sumas, during March, the rain falls for 20.5 days and regularly aggregates up to 5.94" (151mm) of precipitation.

How much does it snow in Sumas in March?

In Sumas, in March, during 2.6 snowfall days, 1.97" (50mm) of snow is typically accumulated.

What is the average length of the day in March in Sumas?

In March, the average day length in Sumas, Washington, is 11h and 56min.

What time are sunrise and sunset in March in Sumas?

In March, on the first day of the month, sunrise is at 6:49 am and sunset at 5:53 pm PST. On the last day of the month, sunrise is at 6:46 am and sunset at 7:39 pm PDT.

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

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

How many hours of sunshine does Sumas have in March?

The average sunshine duration in March in Sumas is 5.4h.

What is the UV index intensity in March in Sumas?

In March, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.
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
Sumas, WA

Average temperature in March - Sumas, WA
  • Average high temperature in March: 47.1°F

The warmest month (with the highest average high temperature) is August (73.6°F).
The month with the lowest average high temperature is December (39.6°F).

  • Average low temperature in March: 34.9°F

The month with the highest average low temperature is August (51.4°F).
The coldest months (with the lowest average low temperature) are February and December (31.6°F).

Average pressure in March
Sumas, WA

Average pressure in March - Sumas, WA
  • Average pressure in March: 30"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March and August (30"Hg).

Average wind speed in March
Sumas, WA

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

The windiest months (with the highest average wind speed) are January and February (4.7mph).
The calmest month (with the lowest average wind speed) is August (3.2mph).

Average humidity in March
Sumas, WA

Average humidity in March - Sumas, WA
  • Average humidity in March: 85%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is July (73%).

Average rainfall in March
Sumas, WA

Average rainfall in March - Sumas, WA
  • Average rainfall in March: 5.94"

The wettest month (with the highest rainfall) is November (7.72").
The driest month (with the least rainfall) is July (0.91").

Average rainfall days in March
Sumas, WA

Average rainfall days in March - Sumas, WA
  • Average rainfall days in March: 20.5 days

The month with the highest number of rainy days is March (20.5 days).
The month with the least rainy days is August (7.8 days).

Average snowfall in March
Sumas, WA

Average snowfall in March - Sumas, WA
  • Average snowfall in March: 1.97"

The month with the highest snowfall is February (3.11").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in March
Sumas, WA

Average snowfall days in March - Sumas, WA
  • Average snowfall days in March: 2.6 days

The month with the highest number of snowfall days is February (4.7 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
Sumas, WA

Average daylight in March / Average sunshine in March - Sumas, WA
  • Average daylight in March: 11h and 5min

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).

  • Average sunshine in March: 5h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).

Average sunshine days in March
Sumas, WA

Average sunshine days in March - Sumas, WA
  • Average sunshine days in March: 8.4 days

The months with the most sunshine days are July and August (21 days).
The month with the least sunshine days is March (8.4 days).

Average UV index in March
Sumas, WA

Average UV index in March - Sumas, WA
  • Average UV index in March: 3

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

Average cloud cover in March
Sumas, WA

Average cloud cover in March - Sumas, WA
  • Average cloud cover in March: 60

The month with the most cloud cover is March (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 30).

Average visibility in March
Sumas, WA

Average visibility in March - Sumas, WA
  • Average visibility in March: 4mi

The months with the highest visibility are April, May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, November and December (4mi).

Sumas, Washington, USA

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