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
As Ontario, New York, transitions into April, the average high-temperature is observed to rise from a wintry 38.8°F (3.8°C) in March to a frosty 49.5°F (9.7°C). Ontario's nights in April cool down to an average low-temperature of 37.9°F (3.3°C).Humidity
In Ontario, New York, the average relative humidity in April is 77%.Rainfall
In Ontario, in April, during 15.8 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. Throughout the year, in Ontario, there are 167.9 rainfall days, and 31.18" (792mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In April, it is snowing for 3.1 days. Throughout April, 1.18" (30mm) of snow is accumulated. In Ontario, during the entire year, snow falls for 62.3 days and aggregates up to 20.63" (524mm) of snow.Daylight
The average length of the day in April is 13h and 26min.On the first day of April in Ontario, sunrise is at 6:49 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 8:09 pm EDT.
Sunshine
In April, the average sunshine is 7.7h.UV index
In April, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 3 in April translates into these instructions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature in Ontario?
What is the average humidity in April in Ontario?
How much does it rain in Ontario in April?
How much does it snow in Ontario in April?
How many hours of daylight does Ontario have in April?
When is the sunrise / sunset in April in Ontario?
How long on average sun shines in April in Ontario?
What is the UV index intensity in April in Ontario?
Average temperature in April
Ontario, NY
- Average high temperature in April: 49.5°F
The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in April: 37.9°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in April
Ontario, NY
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Ontario, NY
- Average wind speed in April: 11.6mph
The windiest month (with the highest average wind speed) is January (13.2mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in April
Ontario, NY
- Average humidity in April: 77%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are August and September (75%).
Average rainfall in April
Ontario, NY
- Average rainfall in April: 2.87"
The wettest month (with the highest rainfall) is October (3.23").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in April
Ontario, NY
- Average rainfall days in April: 15.8 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in April
Ontario, NY
- Average snowfall in April: 1.18"
The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Ontario, NY
- Average snowfall days in April: 3.1 days
The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Ontario, NY
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in April: 7h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in April
Ontario, NY
- Average sunshine days in April: 10.8 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (7.3 days).
Average UV index in April
Ontario, NY
- Average UV index in April: 3
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Ontario, NY
- Average cloud cover in April: 50
The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in April
Ontario, NY
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Ontario, New York, USA
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