April weather forecast
Swarthmore, PA

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Weather in April

April in Swarthmore, Pennsylvania, is an enjoyable spring month, with temperature in the range of an average high of 61.5°F (16.4°C) and an average low of 45°F (7.2°C).

Temperature

April marks a rise in the average high-temperature, moving from March's frosty 49.6°F (9.8°C) to a refreshing 61.5°F (16.4°C). Swarthmore witnesses a consistent average low-temperature of 45°F (7.2°C) throughout April.

Humidity

April is the least humid month, with an average relative humidity of 71%.

Rainfall

In April, the rain falls for 13.4 days. Throughout April, 2.01" (51mm) of precipitation is accumulated. Throughout the year, there are 148.4 rainfall days, and 25.94" (659mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall in Swarthmore, Pennsylvania. In Swarthmore, during April, snow falls for 0.3 days and regularly aggregates up to 0.2" (5mm) of snow. Throughout the year, there are 12.6 snowfall days, and 7.28" (185mm) of snow is accumulated.

Daylight

In Swarthmore, the average length of the day in April is 13h and 17min.
On the first day of April, sunrise is at 6:44 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 7:55 pm EDT.

Sunshine

In April, the average sunshine is 8.5h.

UV index

In April, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 4 during April translates into the following directions:
Be vigilant - Preventing sunburn is recommended. Around midday, solar radiation is most harmful; hence, exposure should be limited. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
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Frequently asked questions

What are the temperatures in Swarthmore in April?

In April, the average high-temperature and low-temperature are 61.5°F (16.4°C) and 45°F (7.2°C) respectively.

What is the least humid month in Swarthmore?

April is the least humid month in Swarthmore, with an average relative humidity of 71%.

What is the average humidity in April in Swarthmore?

In Swarthmore, the average relative humidity in April is 71%.

How much does it rain in Swarthmore in April?

In Swarthmore, in April, during 13.4 rainfall days, 2.01" (51mm) of precipitation is typically accumulated.

How much does it snow in Swarthmore in April?

In Swarthmore, Pennsylvania, during April, snow falls for 0.3 days and regularly aggregates up to 0.2" (5mm) of snow.

How many hours of daylight does Swarthmore have in April?

In Swarthmore, Pennsylvania, the average day length in April is 13h and 17min.

What time are sunrise and sunset in April in Swarthmore?

On the first day of April, sunrise is at 6:44 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 7:55 pm EDT.

How long on average sun shines in April in Swarthmore?

In April, the average sunshine duration in Swarthmore is 8.5h.

What is the UV index reading in April in Swarthmore?

The average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe 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 April
Swarthmore, PA

Average temperature in April - Swarthmore, PA
  • Average high temperature in April: 61.5°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 (37.4°F).

  • Average low temperature in April: 45°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

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Average pressure in April
Swarthmore, PA

Average pressure in April - Swarthmore, PA
  • Average pressure in April: 29.99"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 April
Swarthmore, PA

Average wind speed in April - Swarthmore, PA
  • Average wind speed in April: 8.5mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average humidity in April
Swarthmore, PA

Average humidity in April - Swarthmore, PA
  • Average humidity in April: 71%

The months with the highest relative humidity are February, October and December (77%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in April
Swarthmore, PA

Average rainfall in April - Swarthmore, PA
  • Average rainfall in April: 2.01"

The wettest month (with the highest rainfall) is August (3.11").
The driest month (with the least rainfall) is January (1.61").

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Average rainfall days in April
Swarthmore, PA

Average rainfall days in April - Swarthmore, PA
  • Average rainfall days in April: 13.4 days

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (7.1 days).

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Average snowfall in April
Swarthmore, PA

Average snowfall in April - Swarthmore, PA
  • Average snowfall in April: 0.2"

The month with the highest snowfall is March (2.32").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in April
Swarthmore, PA

Average snowfall days in April - Swarthmore, PA
  • Average snowfall days in April: 0.3 days

The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in April /
Average sunshine in April
Swarthmore, PA

Average daylight in April / Average sunshine in April - Swarthmore, PA
  • Average daylight in April: 13h and 2min

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 April: 8h 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 54min).

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Average sunshine days in April
Swarthmore, PA

Average sunshine days in April - Swarthmore, PA
  • Average sunshine days in April: 15.3 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (11.3 days).

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Average UV index in April
Swarthmore, PA

Average UV index in April - Swarthmore, PA
  • Average UV index in April: 4

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, November and December (UV index 2).

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Average cloud cover in April
Swarthmore, PA

Average cloud cover in April - Swarthmore, PA
  • Average cloud cover in April: 43

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in April
Swarthmore, PA

Average visibility in April - Swarthmore, PA
  • Average visibility in April: 6mi

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

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Swarthmore, Pennsylvania, USA

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