April weather forecast and climate
Oswego, NY

The colorful sun rising over a calm marina in Oswego, New York, with a view of numerous boats and yachts docked along several piers
The colorful sun rising over a calm marina in Oswego, New York, with a view of numerous boats and yachts docked along several piers

Weather in April

April is a chilly spring month in Oswego, New York, with average temperature fluctuating between 38.3°F (3.5°C) and 47.1°F (8.4°C).

Temperature

In April, the average high-temperature rises, from a wintry 37.2°F (2.9°C) in March, to a chilly 47.1°F (8.4°C). In April, in Oswego, the average low-temperature is 38.3°F (3.5°C).

Humidity

In Oswego, the average relative humidity is 79%.

Rainfall

In Oswego, it is raining for 15.8 days, with typically 3.19" (81mm) of accumulated precipitation. Throughout the year, there are 163 rainfall days, and 37.83" (961mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Oswego, New York, are January through April, October through December. April is the last month it regularly snows in Oswego, New York. During 2.5 snowfall days, in April, Oswego aggregates 0.47" (12mm) of snow. Throughout the year, in Oswego, New York, there are 46.3 snowfall days, and 14.8" (376mm) of snow is accumulated.

Ocean temperature

In Oswego, the average seawater temperature in April is 38.8°F (3.8°C).
Note: For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

Daylight

The average length of the day in Oswego, New York, is 13.5h.

Sunshine

In April, the average sunshine in Oswego is 7.4h.

UV index

In April, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for the average person.
Note: In April, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in April in Oswego?

In Oswego, New York, in April, the average high-temperature is 47.1°F (8.4°C), and the average low-temperature is 38.3°F (3.5°C).

What is the average humidity in April in Oswego?

In April, the average relative humidity is 79%.

How much does it rain in Oswego in April?

In Oswego, New York, in April, during 15.8 rainfall days, 3.19" (81mm) of precipitation is typically accumulated.

What is the last month it snows in Oswego?

April is the last month it regularly snows in Oswego, New York. During 2.5 snowfall days, in April, Oswego aggregates 0.47" (12mm) of snow.

What is the ocean temperature in April in Oswego?

In Oswego, the average seawater temperature in April is 38.8°F (3.8°C). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

How many hours of daylight does Oswego have in April?

In April, the average length of the day in Oswego, New York, is 13.5h.

How long on average sun shines in April in Oswego?

In April, the average sunshine is 7.4h.

What is the UV index reading in April in Oswego?

In Oswego, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to the UV radiation.

Average temperature in April
Oswego, NY

Average temperature in April - Oswego, NY
  • Average high temperature in April: 47.1°F

The warmest month (with the highest average high temperature) is August (74.1°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in April: 38.3°F

Months with the highest average low temperature are July and August (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).

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Average pressure in April
Oswego, NY

Average pressure in April - Oswego, NY
  • Average pressure in April: 29.96"

The month with the highest atmospheric pressure is November (30.08").
The month with the lowest atmospheric pressure is June (29.92").

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Average wind speed in April
Oswego, NY

Average wind speed in April - Oswego, NY
  • Average wind speed in April: 12.7mph

The windiest month (with the highest average wind speed) is January (15mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).

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Average humidity in April
Oswego, NY

Average humidity in April - Oswego, NY
  • Average humidity in April: 79%

The month with the highest relative humidity is June (83%).
Months with the lowest relative humidity are September and November (75%).

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Average rainfall in April
Oswego, NY

Average rainfall in April - Oswego, NY
  • Average rainfall in April: 3.19"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is January (2.2").

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Average rainfall days in April
Oswego, NY

Average rainfall days in April - Oswego, NY
  • Average rainfall days in April: 15.8 days

The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is February (6 days).

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Average snowfall in April
Oswego, NY

Average snowfall in April - Oswego, NY
  • Average snowfall in April: 0.47"

The month with the highest snowfall is February (3.94").
Months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in April
Oswego, NY

Average snowfall days in April - Oswego, NY
  • Average snowfall days in April: 2.5 days

The month with the highest number of snowfall days is February (11.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in April
Oswego, NY

Average sea temperature in April - Oswego, NY
  • Average sea temperature in April: 38.8°F

The best month for swimming (with the highest average sea temperature) is August (73.2°F).
The coldest month (with the lowest average sea temperature) is March (35.4°F).

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Average daylight in April /
Average sunshine in April
Oswego, NY

Average daylight in April / Average sunshine in April - Oswego, NY
  • Average daylight in April: 13.5h

The month with the longest days is June (Average daylight: 15.4h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in April: 7.4h

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is January (Average sunshine: 2.3h).

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Average sunshine days in April
Oswego, NY

Average sunshine days in April - Oswego, NY
  • Average sunshine days in April: 11.5 days

The month with the most sunshine days is September (13.7 days).
The month with the least sunshine days is December (8.5 days).

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Average UV index in April
Oswego, NY

Average UV index in April - Oswego, NY
  • Average UV index in April: 3

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in April
Oswego, NY

Average cloud cover in April - Oswego, NY
  • Average cloud cover in April: 52

The month with the most cloud cover is January (Cloud cover 79).
Months with the least cloud cover are July and August (Cloud cover 29).

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Average visibility in April
Oswego, NY

Average visibility in April - Oswego, NY
  • Average visibility in April: 6mi

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

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