March weather forecast
Harrow, PA

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Weather in March

The first month of the spring, March, is a frosty month in Harrow, Pennsylvania, with temperature in the range of an average low of 31.1°F (-0.5°C) and an average high of 46.9°F (8.3°C).

Temperature

March marks a minor ascent in the average high-temperature, adjusting from February's cold 38.7°F (3.7°C) to a frosty 46.9°F (8.3°C). March nights observe an average temperature dip to a subzero cold 31.1°F (-0.5°C).

Humidity

In March, the average relative humidity is 77%.

Rainfall

In March, the rain falls for 8.1 days. Throughout March, 0.55" (14mm) of precipitation is accumulated. Throughout the year, there are 91.3 rainfall days, and 7.28" (185mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall. The month with the most snowfall in Harrow is March, when snow falls for 3.5 days and typically aggregates up to 0.63" (16mm) of snow.

Daylight

The average length of the day in March in Harrow is 11h and 58min.
On the first day of March in Harrow, Pennsylvania, sunrise is at 6:33 am and sunset at 5:52 pm EST. On the last day of the month, sunrise is at 6:44 am and sunset at 7:24 pm EDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from EDT to EST.

Sunshine

In Harrow, Pennsylvania, the average sunshine in March is 6.2h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Harrow. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 in March interprets into the following advice:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average March temperature in Harrow?

The high-temperature, in March, in Harrow, records 46.9°F (8.3°C), while the low-temperature is 31.1°F (-0.5°C).

What is the average humidity in March in Harrow?

The average relative humidity in March is 77%.

How much does it rain in Harrow in March?

In Harrow, during March, the rain falls for 8.1 days and regularly aggregates up to 0.55" (14mm) of precipitation.

What is the snowiest month in Harrow?

The month with the most snowfall in Harrow is March, when snow falls for 3.5 days and typically aggregates up to 0.63" (16mm) of snow.

How many days does it snow in March in Harrow?

In Harrow, Pennsylvania, in March, during 3.5 snowfall days, 0.63" (16mm) of snow is typically accumulated.

How many hours of daylight does Harrow have in March?

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

When are sunrise and sunset in March in Harrow?

On the first day of March in Harrow, sunrise is at 6:33 am and sunset at 5:52 pm EST. On the last day of the month, sunrise is at 6:44 am and sunset at 7:24 pm EDT.

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

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Harrow, Pennsylvania, and the time zone changes from EST to EDT. DST ends Sunday, November 3. 2024, at 2:00 am.

How long on average sun shines in March in Harrow?

The average sunshine duration in March is 6.2h.

When is the lowest UV index in Harrow?

The months with the lowest UV index in Harrow, Pennsylvania, are January through March, November and December, with an average maximum UV index of 2.

How high is the UV index in March in Harrow?

In Harrow, the average daily maximum UV index in March is 2. A UV Index reading of 2, and below, represents a minimal hazard to health 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
Harrow, PA

Average temperature in March - Harrow, PA
  • Average high temperature in March: 46.9°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.9°F).

  • Average low temperature in March: 31.1°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

Average pressure in March
Harrow, PA

Average pressure in March - Harrow, PA
  • Average pressure in March: 30.06"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in March
Harrow, PA

Average wind speed in March - Harrow, PA
  • Average wind speed in March: 8.3mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in March
Harrow, PA

Average humidity in March - Harrow, PA
  • Average humidity in March: 77%

The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (76%).

Average rainfall in March
Harrow, PA

Average rainfall in March - Harrow, PA
  • Average rainfall in March: 0.55"

The wettest month (with the highest rainfall) is July (0.91").
The driest month (with the least rainfall) is September (0.28").

Average rainfall days in March
Harrow, PA

Average rainfall days in March - Harrow, PA
  • Average rainfall days in March: 8.1 days

The months with the highest number of rainy days are June and July (10.2 days).
The month with the least rainy days is January (4.3 days).

Average snowfall in March
Harrow, PA

Average snowfall in March - Harrow, PA
  • Average snowfall in March: 0.63"

The month with the highest snowfall is March (0.63").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in March
Harrow, PA

Average snowfall days in March - Harrow, PA
  • Average snowfall days in March: 3.5 days

The month with the highest number of snowfall days is February (4.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in March /
Average sunshine in March
Harrow, PA

Average daylight in March / Average sunshine in March - Harrow, PA
  • Average daylight in March: 12h and 0min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in March: 6h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in March
Harrow, PA

Average sunshine days in March - Harrow, PA
  • Average sunshine days in March: 20.2 days

The month with the most sunshine days is January (23.8 days).
The month with the least sunshine days is June (16.7 days).

Average UV index in March
Harrow, PA

Average UV index in March - Harrow, PA
  • Average UV index in March: 2

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in March
Harrow, PA

Average cloud cover in March - Harrow, PA
  • Average cloud cover in March: 49

The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 34).

Average visibility in March
Harrow, PA

Average visibility in March - Harrow, PA
  • Average visibility in March: 6mi

The months with the highest visibility are January, February, March, April, November and December (6mi).
The months with the lowest visibility are May, June, July, August, September and October (5mi).

Harrow, Pennsylvania, USA

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