May weather forecast
Oswego, NY

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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 May

May continues the warming trend in Oswego, providing a pleasant prelude to the summer. The month is devoid of any snowfall while temperatures continue to rise steadily, and it starts to rain more frequently. Peak temperatures average around 56.8°F (13.8°C), a sure sign that summer is just around the corner. May also enjoys the second highest daylight hours with 14.7 hours, allowing plenty of sunshine to permeate the city. As such, May in Oswego encapsulates rather comfortable and moderate climatic patterns.

Temperature

May shows a rise in the average high-temperature, moving from April's frosty 47.1°F (8.4°C) to a refreshing 56.8°F (13.8°C). May nights reveal a minor deviation from daytime highs, with a mean low-temperature of 48°F (8.9°C).

Humidity

In Oswego, the average relative humidity in May is 82%.

Rainfall

The month with the most rainfall in Oswego is May, when the rain falls for 16.6 days and typically aggregates up to 4.37" (111mm) of precipitation.

Snowfall

May through September are months without snowfall in Oswego.

Ocean temperature

In Oswego, in May, the average water temperature is 42.6°F (5.9°C).
Note: Entering waters of 42.6°F (5.9°C) is life-endangering. A mere moment in 55.4°F (13°C) waters feels piercing cold, and below 50°F (10°C) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.

Daylight

In Oswego, New York, the average length of the day in May is 14h and 43min.
On the first day of May in Oswego, sunrise is at 5:57 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 5:28 am and sunset at 8:39 pm EDT.

Sunshine

In May, the average sunshine in Oswego is 9.1h.

UV index

The average daily maximum UV index in May in Oswego is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A maximum daily UV index of 4 during May morphs into the following directions:
Take precautions - Protection against skin and eye damage is obliged. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Frequently asked questions

What are May temperatures in Oswego?

During May, Oswego experiences an average high-temperature of 56.8°F (13.8°C) and a low-temperature of 48°F (8.9°C).

What is the average humidity in May in Oswego?

In May, the average relative humidity is 82%.

What is the wettest month in Oswego?

The month with the most rainfall in Oswego is May, when the rain falls for 16.6 days and typically aggregates up to 4.37" (111mm) of precipitation.

How many days does it rain in May in Oswego?

In Oswego, New York, in May, during 16.6 rainfall days, 4.37" (111mm) of precipitation is typically accumulated.

When it does not snow in Oswego?

In Oswego, New York, snow does not fall in May through September.

Does it snow in Oswego in May?

In May, in Oswego, it doesn't snow. April is the latest month when it typically snows.

How cold is the water in May in Oswego?

In May, the average ocean temperature in Oswego is 42.6°F (5.9°C). Swimming in 42.6°F (5.9°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the average length of the day in May in Oswego?

The average day length in May in Oswego is 14h and 43min.

When are sunrise and sunset in May in Oswego?

In May, on the first day of the month, sunrise is at 5:57 am and sunset at 8:08 pm. On the last day of the month, in Oswego, New York, sunrise is at 5:28 am and sunset at 8:39 pm EDT.

How many hours of sunshine does Oswego have in May?

In May, the average sunshine duration in Oswego is 9.1h.

What is the UV index intensity in May in Oswego?

In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Oswego, NY

Average temperature in May - Oswego, NY
  • Average high temperature in May: 56.8°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 May: 48°F

The 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 May
Oswego, NY

Average pressure in May - Oswego, NY
  • Average pressure in May: 29.98"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).

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Average wind speed in May
Oswego, NY

Average wind speed in May - Oswego, NY
  • Average wind speed in May: 9.6mph

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 May
Oswego, NY

Average humidity in May - Oswego, NY
  • Average humidity in May: 82%

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

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Average rainfall in May
Oswego, NY

Average rainfall in May - Oswego, NY
  • Average rainfall in May: 4.37"

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 May
Oswego, NY

Average rainfall days in May - Oswego, NY
  • Average rainfall days in May: 16.6 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 May
Oswego, NY

Average snowfall in May - Oswego, NY
  • Average snowfall in May: 0"

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

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Average snowfall days in May
Oswego, NY

Average snowfall days in May - Oswego, NY
  • Average snowfall days in May: 0.1 days

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

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Average sea temperature in May
Oswego, NY

Average sea temperature in May - Oswego, NY
  • Average sea temperature in May: 42.6°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 May /
Average sunshine in May
Oswego, NY

Average daylight in May / Average sunshine in May - Oswego, NY
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in May: 9h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).

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Average sunshine days in May
Oswego, NY

Average sunshine days in May - Oswego, NY
  • Average sunshine days in May: 13.1 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 May
Oswego, NY

Average UV index in May - Oswego, NY
  • Average UV index in May: 4

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

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Average cloud cover in May
Oswego, NY

Average cloud cover in May - Oswego, NY
  • Average cloud cover in May: 41

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

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Average visibility in May
Oswego, NY

Average visibility in May - Oswego, NY
  • Average visibility in May: 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).

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Oswego, New York, USA

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