March weather forecast
Norristown, PA

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Weather in March

March, the first month of the spring in Norristown, is a chilly month, with an average temperature varying between 48.6°F (9.2°C) and 33.4°F (0.8°C).

Temperature

March brings a slight elevation in the average high-temperature, transitioning from February's cold 39.7°F (4.3°C) to a chilly 48.6°F (9.2°C). The average low-temperature of 33.4°F (0.8°C) is witnessed during March.

Humidity

The average relative humidity in March is 74%.

Rainfall

In Norristown, in March, it is raining for 11.6 days, with typically 1.1" (28mm) of accumulated precipitation. In Norristown, during the entire year, the rain falls for 138.2 days and collects up to 15.59" (396mm) of precipitation.

Snowfall

January through March, May and December are months with snowfall in Norristown. The months with the most snowfall in Norristown are February and March, with an average 0.55" (14mm) of accumulated snow.

Daylight

In Norristown, Pennsylvania, the average length of the day in March is 11h and 58min.
On the first day of March, sunrise is at 6:33 am and sunset at 5:53 pm EST. On the last day of the month, sunrise is at 6:45 am and sunset at 7:25 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 March, the average sunshine in Norristown is 6.5h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: In March, the maximum UV index of 2 translates into these guidelines:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

What are the temperatures in Norristown in March?

The high-temperature, in March, in Norristown, is 48.6°F (9.2°C), while the low-temperature averages to 33.4°F (0.8°C).

What is the average humidity in March in Norristown?

In Norristown, the average relative humidity in March is 74%.

How much does it rain in Norristown in March?

In Norristown, in March, it is raining for 11.6 days, with typically 1.1" (28mm) of accumulated precipitation.

What is the snowiest month in Norristown?

The months with the most snowfall are February and March, with an average 0.55" (14mm) of accumulated snow.

What is the last month it snows in Norristown?

March is the last month it regularly snows. During 2.6 snowfall days, in March, Norristown aggregates 0.55" (14mm) of snow.

How many hours of daylight does Norristown have in March?

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

When is the sunrise / sunset in March in Norristown?

On the first day of March, sunrise is at 6:33 am and sunset at 5:53 pm EST. On the last day of the month, sunrise is at 6:45 am and sunset at 7:25 pm EDT.

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

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

How many hours of sunshine does Norristown have in March?

The average sunshine duration in March in Norristown, Pennsylvania, is 6.5h.

What is the month with the lowest UV index in Norristown?

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

What is the UV index intensity in March in Norristown?

In Norristown, the average daily maximum UV index in March is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to 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
Norristown, PA

Average temperature in March - Norristown, PA
  • Average high temperature in March: 48.6°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in March: 33.4°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in March
Norristown, PA

Average pressure in March - Norristown, PA
  • Average pressure in March: 30.07"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).

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Average wind speed in March
Norristown, PA

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

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

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Average humidity in March
Norristown, PA

Average humidity in March - Norristown, PA
  • Average humidity in March: 74%

The months with the highest relative humidity are February and October (79%).
The months with the lowest relative humidity are April and July (72%).

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Average rainfall in March
Norristown, PA

Average rainfall in March - Norristown, PA
  • Average rainfall in March: 1.1"

The wettest month (with the highest rainfall) is July (1.89").
The driest month (with the least rainfall) is February (0.91").

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Average rainfall days in March
Norristown, PA

Average rainfall days in March - Norristown, PA
  • Average rainfall days in March: 11.6 days

The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is November (7.4 days).

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Average snowfall in March
Norristown, PA

Average snowfall in March - Norristown, PA
  • Average snowfall in March: 0.55"

The months with the highest snowfall are February and March (0.55").
The months with the least snowfall are April, June, July, August, September, October and November (0").

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Average snowfall days in March
Norristown, PA

Average snowfall days in March - Norristown, PA
  • Average snowfall days in March: 2.6 days

The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are April, June, July, August, September and October (0 days).

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

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

  • Average sunshine in March: 6h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in March
Norristown, PA

Average sunshine days in March - Norristown, PA
  • Average sunshine days in March: 15.7 days

The month with the most sunshine days is November (20.5 days).
The months with the least sunshine days are May and June (12.8 days).

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Average UV index in March
Norristown, PA

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

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

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Average cloud cover in March
Norristown, PA

Average cloud cover in March - Norristown, PA
  • Average cloud cover in March: 47

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in March
Norristown, PA

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

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

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Norristown, Pennsylvania, USA

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