April weather forecast and climate
Summit, NJ

April is a mild spring month in Summit, New Jersey, with average temperature ranging between max 58.5°F (14.7°C) and min 41.9°F (5.5°C).

Temperature

In April, the average high-temperature increases, from a chilly 46.4°F (8°C) in March, to a mild 58.5°F (14.7°C). In April, in Summit, the average low-temperature is 41.9°F (5.5°C).

Humidity

Months with the lowest humidity in Summit are April and August, with an average relative humidity of 74%.

Rainfall

In April, the rain falls for 15.8 days. Throughout April, 2.4" (61mm) of precipitation is accumulated. Throughout the year, there are 164.2 rainfall days, and 30.67" (779mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In April, in Summit, New Jersey, it is snowing for 0.6 days. Throughout April, 0.2" (5mm) of snow is accumulated. In Summit, during the entire year, snow falls for 26 days, and aggregates up to 11.61" (295mm) of snow.

Daylight

The average length of the day in April is 13.3h.

Sunshine

In Summit, the average sunshine is 8.1h.

UV index

The average daily maximum UV index in Summit is 4. A UV Index reading of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV rays for the ordinary person.
Note: In April, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in April in Summit?

In April, the average high-temperature is 58.5°F (14.7°C), and the average low-temperature is 41.9°F (5.5°C).

What are the least humid months in Summit?

Months with the lowest humidity in Summit, New Jersey, are April and August, with an average relative humidity of 74%.

What is the average humidity in April in Summit?

In Summit, New Jersey, the average relative humidity in April is 74%.

How much does it rain in Summit in April?

In Summit, New Jersey, in April, during 15.8 rainfall days, 2.4" (61mm) of precipitation is typically accumulated.

How many days does it snow in April in Summit?

In April, in Summit, New Jersey, it is snowing for 0.6 days. Throughout April, 0.2" (5mm) of snow is accumulated.

How many hours of daylight does Summit have in April?

The average length of the day in April in Summit, New Jersey, is 13.3h.

How long on average sun shines in April in Summit?

In Summit, the average sunshine in April is 8.1h.

What is the UV index reading in April in Summit?

The average daily maximum UV index in April in Summit, New Jersey, is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.
Average temperature in April - Summit, NJ
  • Average high temperature in April: 58.5°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in April: 41.9°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

Average pressure in April - Summit, NJ
  • Average pressure in April: 29.98"

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.93").

Average wind speed in April - Summit, NJ
  • Average wind speed in April: 8.1mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in April - Summit, NJ
  • Average humidity in April: 74%

Months with the highest relative humidity are February and December (80%).
Months with the lowest relative humidity are April and August (74%).

Average rainfall in April - Summit, NJ
  • Average rainfall in April: 2.4"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is September (1.69").

Average rainfall days in April - Summit, NJ
  • Average rainfall days in April: 15.8 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is January (8.8 days).

Average snowfall in April - Summit, NJ
  • Average snowfall in April: 0.2"

The month with the highest snowfall is March (3.5").
Months with the least snowfall are June, July, August and September (0").

Average snowfall days in April - Summit, NJ
  • Average snowfall days in April: 0.6 days

The month with the highest number of snowfall days is January (7.6 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in April / Average sunshine in April - Summit, NJ
  • Average daylight in April: 13.3h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in April: 8.1h

The month with the most sunshine is July (Average sunshine: 10.3h).
The month with the least sunshine is February (Average sunshine: 4.6h).

Average sunshine days in April - Summit, NJ
  • Average sunshine days in April: 11.4 days

The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (10.5 days).

Average UV index in April - Summit, NJ
  • Average UV index in April: 4

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

Average cloud cover in April - Summit, NJ
  • Average cloud cover in April: 47

Months with the most cloud cover are February and March (Cloud cover 49).
Months with the least cloud cover are July and August (Cloud cover 34).

Average visibility in April - Summit, NJ
  • Average visibility in April: 6mi

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