Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
An increase in the average high-temperature marks April, moving from March's frosty 46.2°F (7.9°C) to a moderate 57.7°F (14.3°C). An average low-temperature of 43.3°F (6.3°C) is anticipated throughout the nights in Riverdale during April.Humidity
The average relative humidity in April is 70%.Rainfall
In Riverdale, during April, the rain falls for 10.7 days and regularly aggregates up to 0.71" (18mm) of precipitation. In Riverdale, New Jersey, during the entire year, the rain falls for 106.1 days and collects up to 8.31" (211mm) of precipitation.Snowfall
January through April and December are months with snowfall in Riverdale. April is the last month it regularly snows in Riverdale. During 0.3 snowfall days, in April, Riverdale aggregates 0.04" (1mm) of snow. Throughout the year, in Riverdale, there are 12.2 snowfall days, and 1.18" (30mm) of snow is accumulated.Daylight
In Riverdale, the average length of the day in April is 13h and 20min.On the first day of April, sunrise is at 6:39 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 7:53 pm EDT.
Sunshine
In April, the average sunshine in Riverdale, New Jersey, is 8.3h.UV index
In Riverdale, New Jersey, the average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 4 in April leads to these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
What are the temperatures in Riverdale in April?
What is the average humidity in April in Riverdale?
How much does it rain in Riverdale in April?
What is the last month it snows in Riverdale?
What is the average length of the day in April in Riverdale?
What time are sunrise and sunset in April in Riverdale?
How many hours of sunshine does Riverdale have in April?
What is the UV index reading in April in Riverdale?
Average temperature in April
Riverdale, NJ
- Average high temperature in April: 57.7°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in April: 43.3°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°F).
Average pressure in April
Riverdale, NJ
- Average pressure in April: 29.98"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Riverdale, NJ
- Average wind speed in April: 8.5mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in April
Riverdale, NJ
- Average humidity in April: 70%
The months with the highest relative humidity are February and December (76%).
The month with the lowest relative humidity is August (69%).
Average rainfall in April
Riverdale, NJ
- Average rainfall in April: 0.71"
The wettest month (with the highest rainfall) is July (0.98").
The driest month (with the least rainfall) is September (0.39").
Average rainfall days in April
Riverdale, NJ
- Average rainfall days in April: 10.7 days
The month with the highest number of rainy days is May (11.4 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in April
Riverdale, NJ
- Average snowfall in April: 0.04"
The month with the highest snowfall is December (0.35").
The months with the least snowfall are May, June, July, August, September, October and November (0").
Average snowfall days in April
Riverdale, NJ
- Average snowfall days in April: 0.3 days
The months with the highest number of snowfall days are January and February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Riverdale, NJ
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in April: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in April
Riverdale, NJ
- Average sunshine days in April: 17.4 days
The month with the most sunshine days is January (22.5 days).
The months with the least sunshine days are May and June (15.9 days).
Average UV index in April
Riverdale, NJ
- Average UV index in April: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in April
Riverdale, NJ
- Average cloud cover in April: 45
The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in April
Riverdale, NJ
- 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).
Riverdale, New Jersey, USA
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