March weather forecast
Winthrop, WA

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A mirror view in the blue water of Blue Lake of the trees and rock cliffs nearby, in Winthrop, Washington
A mirror view in the blue water of Blue Lake of the trees and rock cliffs nearby, in Winthrop, Washington

Weather in March

March in Winthrop sees transforming weather patterns as spring steps foot into the region. Warming begins towards the end of winter, with temperatures climbing noticeably to a high of 36.5°F (2.5°C) and a low of 19°F (-7.2°C). Layers of snow melt away as snowfall numbers dwindle down to 6.3" (160mm), spurred by the increasing hours of daylight that reach upto 11.9 hours. The lengthening days are filled with sunlight, preparing the town for warmer days. The departure of winter and arrival of spring are tangible in the growing visibility and sunlit landscapes in town.

Temperature

With the onset of March, Winthrop experiences a subtle temperature shift, with the average high-temperature moving from a freezing cold 30°F (-1.1°C) in February to a cold 36.5°F (2.5°C). Throughout March, the nighttime temperature averages to a subzero cold 19°F (-7.2°C).

Humidity

The average relative humidity in March in Winthrop is 88%.

Rainfall

In Winthrop, in March, during 17.3 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. In Winthrop, Washington, during the entire year, the rain falls for 142.6 days and collects up to 17.91" (455mm) of precipitation.

Snowfall

Months with snowfall in Winthrop are January through April, September through December. In March, in Winthrop, it is snowing for 9.7 days. Throughout March, 6.3" (160mm) of snow is accumulated. Throughout the year, there are 66.9 snowfall days, and 43.98" (1117mm) of snow is accumulated.

Daylight

The average length of the day in March is 11h and 57min.
On the first day of the month, sunrise is at 6:40 am and sunset at 5:45 pm PST. On the last day of March, in Winthrop, sunrise is at 6:38 am and sunset at 7:30 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 6.4h.

UV index

In Winthrop, the average daily maximum UV index in March is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 2 during March translates into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
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Frequently asked questions

How cold is it in Winthrop in March?

In March, in Winthrop, the average high-temperature is 36.5°F (2.5°C), and the average low-temperature is 19°F (-7.2°C).

What is the average humidity in March in Winthrop?

The average relative humidity in March in Winthrop, Washington, is 88%.

How many days does it rain in March in Winthrop?

In Winthrop, in March, it is raining for 17.3 days, with typically 2.13" (54mm) of accumulated precipitation.

How many days does it snow in March in Winthrop?

In Winthrop, during March, snow falls for 9.7 days and regularly aggregates up to 6.3" (160mm) of snow.

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

The average day length in March in Winthrop, Washington, is 11h and 57min.

What time are sunrise and sunset in March in Winthrop?

In March, on the first day of the month, sunrise is at 6:40 am and sunset at 5:45 pm PST. On the last day of the month, in Winthrop, Washington, sunrise is at 6:38 am and sunset at 7:30 pm PDT.

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

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Winthrop, 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 Winthrop?

The average sunshine duration in March in Winthrop is 6.4h.

How high is the UV index in March in Winthrop?

In Winthrop, Washington, the average daily maximum UV index in March is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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
Winthrop, WA

Average temperature in March - Winthrop, WA
  • Average high temperature in March: 36.5°F

The warmest month (with the highest average high temperature) is August (75.9°F).
The month with the lowest average high temperature is December (27.5°F).

  • Average low temperature in March: 19°F

The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (13.5°F).

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Average pressure in March
Winthrop, WA

Average pressure in March - Winthrop, WA
  • Average pressure in March: 30.01"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June and August (29.95"Hg).

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Average wind speed in March
Winthrop, WA

Average wind speed in March - Winthrop, WA
  • Average wind speed in March: 4.2mph

The windiest months (with the highest average wind speed) are June and July (5mph).
The calmest months (with the lowest average wind speed) are January and December (3.6mph).

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Average humidity in March
Winthrop, WA

Average humidity in March - Winthrop, WA
  • Average humidity in March: 88%

The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (53%).

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Average rainfall in March
Winthrop, WA

Average rainfall in March - Winthrop, WA
  • Average rainfall in March: 2.13"

The wettest month (with the highest rainfall) is December (2.48").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days in March
Winthrop, WA

Average rainfall days in March - Winthrop, WA
  • Average rainfall days in March: 17.3 days

The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (6.1 days).

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Average snowfall in March
Winthrop, WA

Average snowfall in March - Winthrop, WA
  • Average snowfall in March: 6.3"

The month with the highest snowfall is December (12.87").
The months with the least snowfall are May, June, July and August (0").

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Average snowfall days in March
Winthrop, WA

Average snowfall days in March - Winthrop, WA
  • Average snowfall days in March: 9.7 days

The month with the highest number of snowfall days is December (15.3 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in March /
Average sunshine in March
Winthrop, WA

Average daylight in March / Average sunshine in March - Winthrop, 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 24min).

  • Average sunshine in March: 6h and 2min

The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in March
Winthrop, WA

Average sunshine days in March - Winthrop, WA
  • Average sunshine days in March: 8.3 days

The month with the most sunshine days is August (23 days).
The month with the least sunshine days is March (8.3 days).

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Average UV index in March
Winthrop, WA

Average UV index in March - Winthrop, WA
  • Average UV index in March: 2

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

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Average cloud cover in March
Winthrop, WA

Average cloud cover in March - Winthrop, WA
  • Average cloud cover in March: 51

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 15).

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Average visibility in March
Winthrop, WA

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

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).

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Winthrop, Washington, USA

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