April weather forecastNapierville, Canada
April
Weather in April
April in Napierville, Canada, is a cool spring month, with an average temperature fluctuating between 1.5°C (34.7°F) and 10°C (50°F).Temperature
The shift into April is marked by a noticeable escalation in the average high-temperature, rising from March's wintry 1.5°C (34.7°F) to a cool 10°C (50°F). An average minimum temperature of 1.5°C (34.7°F) marks the month of April.Humidity
April is the least humid month, with an average relative humidity of 75%.Rainfall
In Napierville, in April, during 13.6 rainfall days, 25mm (0.98") of precipitation is typically accumulated. Throughout the year, in Napierville, there are 137 rainfall days, and 329mm (12.95") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In April, in Napierville, Canada, it is snowing for 4.2 days. Throughout April, 20mm (0.79") of snow is accumulated. Throughout the year, there are 72.1 snowfall days, and 390mm (15.35") of snow is accumulated.Daylight
The average length of the day in April in Napierville, Canada, is 13h and 32min.On the first day of April in Napierville, sunrise is at 6:32 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 7:58 pm EDT.
Sunshine
In April, the average sunshine is 6.9h.UV index
In April, the average daily maximum UV index in Napierville is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 3 during April leads to these instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Stay sun-safe with clothing that is both closely woven and worn loosely. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Napierville, Canada
- Average high temperature in April: 10°C
The warmest month (with the highest average high temperature) is July (25.4°C).
The month with the lowest average high temperature is January (-5.3°C).
- Average low temperature in April: 1.5°C
The month with the highest average low temperature is July (15.3°C).
The coldest month (with the lowest average low temperature) is January (-12.4°C).
Average pressure in April
Napierville, Canada
- Average pressure in April: 1014.3mbar
The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1012.5mbar).
Average wind speed in April
Napierville, Canada
- Average wind speed in April: 13.9km/h
The windiest month (with the highest average wind speed) is April (13.9km/h).
The calmest months (with the lowest average wind speed) are July and August (10.4km/h).
Average humidity in April
Napierville, Canada
- Average humidity in April: 75%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is April (75%).
Average rainfall in April
Napierville, Canada
- Average rainfall in April: 25mm
The wettest month (with the highest rainfall) is August (37mm).
The driest month (with the least rainfall) is September (18mm).
Average rainfall days in April
Napierville, Canada
- Average rainfall days in April: 13.6 days
The month with the highest number of rainy days is June (16.6 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in April
Napierville, Canada
- Average snowfall in April: 20mm
The month with the highest snowfall is January (93mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in April
Napierville, Canada
- Average snowfall days in April: 4.2 days
The month with the highest number of snowfall days is February (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Napierville, Canada
- Average daylight in April: 13h and 30min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in April: 6h and 54min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 2h and 54min).
Average sunshine days in April
Napierville, Canada
- Average sunshine days in April: 12.2 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in April
Napierville, Canada
- Average UV index in April: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Napierville, Canada
- Average cloud cover in April: 55
The month with the most cloud cover is February (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in April
Napierville, Canada
- Average visibility in April: 9km
The months with the highest visibility are April, May, June, July, August, September, October and November (9km).
The month with the lowest visibility is January (7km).
