January 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 January

The beginning of a new year in Oswego, New York, greets residents with typical winter conditions, as cold temperatures dominate the month's weather patterns. The city experiences its second highest snowfall in January, making it a winter wonderland. This month stands out with an average high temperature of 29.8°F (-1.2°C) and a low of 21.7°F (-5.7°C), contributing to January's label as one of the coldest months. However, despite the somewhat harsh climate, January permits a reasonable daylight duration of 9.4 hours. All in all, Oswego moves into January well-prepared for the cold and snowy conditions, with a hint of sunshine piercing through.

Temperature

January is the coldest month, with the temperature often reaching an average high of 29.8°F (-1.2°C) and an average low of 21.7°F (-5.7°C).

Humidity

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

Rainfall

The month with the least rainfall is January, when the rain falls for 6.1 days and typically collects 2.2" (56mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In January, it is snowing for 11.1 days. Throughout January, 2.95" (75mm) of snow is accumulated. In Oswego, New York, during the entire year, snow falls for 46.3 days and aggregates up to 14.8" (376mm) of snow.

Ocean temperature

In Oswego, the average seawater temperature in January is 38.3°F (3.5°C).
Note: During swimming activities, this is a serious life-threatening hazard. Rapid loss of control over breathing impairs cognitive abilities. A specialized swimsuit is essential to limit thermal wastage.

Daylight

The average length of the day in January is 9h and 24min.
On the first day of the month, sunrise is at 7:38 am and sunset at 4:40 pm. On the last day of January, sunrise is at 7:23 am and sunset at 5:15 pm EST.

Sunshine

The month with the least sunshine is January, with an average of 2.3h of sunshine.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 1 during January translates into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.

Frequently asked questions

What is the coldest month?

In Oswego, January is the coldest month, with temperatures averaging a high of 29.8°F (-1.2°C) and a low of 21.7°F (-5.7°C).

How cold is it in January?

An average high-temperature, in January, in Oswego, is 29.8°F (-1.2°C) and the average low-temperature is 21.7°F (-5.7°C).

What is the average humidity in January?

In January, the average relative humidity is 82%.

What is the driest month?

January is the month with the least rainfall. Rain falls for 6.1 days and accumulates 2.2" (56mm) of precipitation.

How many days does it rain in January?

In Oswego, during January, the rain falls for 6.1 days and regularly aggregates up to 2.2" (56mm) of precipitation.

How many days does it snow in January?

In Oswego, during January, snow falls for 11.1 days and regularly aggregates up to 2.95" (75mm) of snow.

What is the ocean temperature in January?

In Oswego, in January, the average water temperature is 38.3°F (3.5°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 January?

In January, the average day length is 9h and 24min.

When are sunrise and sunset in January?

On the first day of January, sunrise is at 7:38 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:15 pm EST.

What is the month with the least sunshine?

With an average of 2.3h of sunshine, January has the least sunshine of the year.

How many hours of sunshine does Oswego have in January?

In January, the average sunshine duration is 2.3h.

What is the month with the lowest UV index?

January and December, with an average maximum UV index of 1, are months with the lowest UV index.

What is the UV index intensity in January?

In January, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Oswego, NY

Average temperature in January - Oswego, NY
  • Average high temperature in January: 29.8°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 January: 21.7°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).

Average pressure in January
Oswego, NY

Average pressure in January - Oswego, NY
  • Average pressure in January: 30.04"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 January
Oswego, NY

Average wind speed in January - Oswego, NY
  • Average wind speed in January: 15mph

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).

Average humidity in January
Oswego, NY

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

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

Average rainfall in January
Oswego, NY

Average rainfall in January - Oswego, NY
  • Average rainfall in January: 2.2"

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

Average rainfall days in January
Oswego, NY

Average rainfall days in January - Oswego, NY
  • Average rainfall days in January: 6.1 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).

Average snowfall in January
Oswego, NY

Average snowfall in January - Oswego, NY
  • Average snowfall in January: 2.95"

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

Average snowfall days in January
Oswego, NY

Average snowfall days in January - Oswego, NY
  • Average snowfall days in January: 11.1 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).

Average sea temperature in January
Oswego, NY

Average sea temperature in January - Oswego, NY
  • Average sea temperature in January: 38.3°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).

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

Average daylight in January / Average sunshine in January - Oswego, NY
  • Average daylight in January: 9h and 2min

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 January: 2h and 2min

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).

Average sunshine days in January
Oswego, NY

Average sunshine days in January - Oswego, NY
  • Average sunshine days in January: 10.7 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).

Average UV index in January
Oswego, NY

Average UV index in January - Oswego, NY
  • Average UV index in January: 1

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).

Average cloud cover in January
Oswego, NY

Average cloud cover in January - Oswego, NY
  • Average cloud cover in January: 79

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).

Average visibility in January
Oswego, NY

Average visibility in January - Oswego, NY
  • Average visibility in January: 5mi

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).

Oswego, New York, USA

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