March weather forecast
Hillsboro, OR

The red tree colors of the fall along a road and amid trees in this tranquil neighborhood in Hillsboro, Oregon
The red tree colors of the fall along a road and amid trees in this tranquil neighborhood in Hillsboro, Oregon

Weather in March

The first month of the spring, March, is a cool month in Hillsboro, Oregon, with an average temperature varying between 52.2°F (11.2°C) and 37.8°F (3.2°C).

Temperature

In Hillsboro, Oregon, the average high-temperature in March is almost the same as in February - a cool 52.2°F (11.2°C). In Hillsboro, the average low-temperature is 37.8°F (3.2°C).

Humidity

In March, the average relative humidity in Hillsboro is 83%.

Rainfall

In March, in Hillsboro, the rain falls for 20.8 days. Throughout March, 3.35" (85mm) of precipitation is accumulated. In Hillsboro, during the entire year, the rain falls for 173 days and collects up to 29.49" (749mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall in Hillsboro, Oregon. March is the last month it regularly snows. During 1.6 snowfall days, Hillsboro aggregates 1.42" (36mm) of snow. Throughout the year, in Hillsboro, there are 6.6 snowfall days, and 4.53" (115mm) of snow is accumulated.

Daylight

In Hillsboro, the average length of the day in March is 11h and 58min.
On the first day of the month, sunrise is at 6:49 am and sunset at 5:58 pm PST. On the last day of March, in Hillsboro, sunrise is at 6:53 am and sunset at 7:38 pm PDT.
Note: On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time lasts until Sunday, November 6. 2022, at 2:00 am; consequently, the time zone reverts from PDT to PST.

Sunshine

In March, the average sunshine is 5.3h.

UV index

In Hillsboro, Oregon, the average daily maximum UV index in March is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 3 in March transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in March in Hillsboro?

In Hillsboro, Oregon, in March, the average high-temperature is 52.2°F (11.2°C), and the average low-temperature is 37.8°F (3.2°C).

What is the average humidity in March in Hillsboro?

The average relative humidity in March is 83%.

How much does it rain in Hillsboro in March?

In Hillsboro, Oregon, in March, it is raining for 20.8 days, with typically 3.35" (85mm) of accumulated precipitation.

What is the last month it snows in Hillsboro?

March is the last month it regularly snows in Hillsboro. During 1.6 snowfall days, in March, Hillsboro aggregates 1.42" (36mm) of snow.

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

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

When is the sunrise / sunset in March in Hillsboro?

In March, on the first day of the month, sunrise is at 6:49 am and sunset at 5:58 pm PST. On the last day of the month, in Hillsboro, sunrise is at 6:53 am and sunset at 7:38 pm PDT.

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

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. DST ends Sunday, November 6. 2022, at 2:00 am.

How many hours of sunshine does Hillsboro have in March?

In Hillsboro, Oregon, the average sunshine duration in March is 5.3h.

How high is the UV index in March in Hillsboro?

In March, the average daily maximum UV index in Hillsboro, Oregon, is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Hillsboro, OR

Average temperature in March - Hillsboro, OR
  • Average high temperature in March: 52.2°F

The warmest month (with the highest average high temperature) is August (81.5°F).
The month with the lowest average high temperature is December (43.9°F).

  • Average low temperature in March: 37.8°F

The month with the highest average low temperature is August (55.4°F).
The coldest month (with the lowest average low temperature) is December (34°F).

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Average pressure in March
Hillsboro, OR

Average pressure in March - Hillsboro, OR
  • Average pressure in March: 30.03"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

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Average wind speed in March
Hillsboro, OR

Average wind speed in March - Hillsboro, OR
  • Average wind speed in March: 5mph

The windiest month (with the highest average wind speed) is March (5mph).
The calmest months (with the lowest average wind speed) are June, August and September (4.3mph).

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Average humidity in March
Hillsboro, OR

Average humidity in March - Hillsboro, OR
  • Average humidity in March: 83%

The months with the highest relative humidity are January, February, November and December (85%).
The month with the lowest relative humidity is August (64%).

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Average rainfall in March
Hillsboro, OR

Average rainfall in March - Hillsboro, OR
  • Average rainfall in March: 3.35"

The wettest month (with the highest rainfall) is January (4.57").
The driest month (with the least rainfall) is August (0.31").

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Average rainfall days in March
Hillsboro, OR

Average rainfall days in March - Hillsboro, OR
  • Average rainfall days in March: 20.8 days

The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (4.4 days).

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Average snowfall in March
Hillsboro, OR

Average snowfall in March - Hillsboro, OR
  • Average snowfall in March: 1.42"

The month with the highest snowfall is February (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in March
Hillsboro, OR

Average snowfall days in March - Hillsboro, OR
  • Average snowfall days in March: 1.6 days

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

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Average daylight in March /
Average sunshine in March
Hillsboro, OR

Average daylight in March / Average sunshine in March - Hillsboro, OR
  • Average daylight in March: 11h and 58min

The month with the longest days is June (Average daylight: 15h and 38min).
The month with the shortest days is December (Average daylight: 8h and 46min).

  • Average sunshine in March: 5h and 18min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).

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Average sunshine days in March
Hillsboro, OR

Average sunshine days in March - Hillsboro, OR
  • Average sunshine days in March: 8.5 days

The month with the most sunshine days is July (24.4 days).
The month with the least sunshine days is March (8.5 days).

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Average UV index in March
Hillsboro, OR

Average UV index in March - Hillsboro, OR
  • Average UV index in March: 3

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 2).

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Average cloud cover in March
Hillsboro, OR

Average cloud cover in March - Hillsboro, OR
  • Average cloud cover in March: 61

The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in March
Hillsboro, OR

Average visibility in March - Hillsboro, OR
  • Average visibility in March: 5mi

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

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