March weather forecastSumas, WA
March
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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: 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: 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: 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: 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: 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: 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: 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: 11h and 54min
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 24min
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: 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: 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: 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: 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).





