January weather forecast and climate
Rochester, NY

Amazing High Falls in Rochester, New York, USA
Amazing High Falls in Rochester, New York, USA

Weather in January

January, like December, is a freezing cold winter month in Rochester, New York, with average temperature fluctuating between 29.3°F (-1.5°C) and 19.8°F (-6.8°C).

Temperature

The coldest month is January, with an average high-temperature of 29.3°F (-1.5°C) and an average low-temperature of 19.8°F (-6.8°C).

Humidity

January and February, with an average relative humidity of 84%, are most humid months.

Rainfall

In Rochester, during January, the rain falls for 9.8 days and regularly aggregates up to 1.97" (50mm) of precipitation. Throughout the year, there are 172.4 rainfall days, and 29.45" (748mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In January, it is snowing for 17.6 days. Throughout January, 5.79" (147mm) of snow is accumulated. Throughout the year, there are 70.9 snowfall days, and 27.44" (697mm) of snow is accumulated.

Ocean temperature

In Rochester, in January, the average water temperature is 37.9°F (3.3°C).
Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

Daylight

In Rochester, the average length of the day is 9.4h.

Sunshine

Months with the least sunshine in Rochester are January and February, with an average of 2.7h of sunshine.

UV index

Months with the lowest UV index in Rochester are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 1 in January interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 coldest month in Rochester?

The coldest month in Rochester is January, with an average high-temperature of 29.3°F (-1.5°C) and an average low-temperature of 19.8°F (-6.8°C).

What is the temperature in January in Rochester?

The average high-temperature, in January, in Rochester, is 29.3°F (-1.5°C), while the average low-temperature is 19.8°F (-6.8°C).

What are the most humid months in Rochester?

Months with the highest humidity in Rochester, New York, are January and February, with an average relative humidity of 84%.

What is the average humidity in January in Rochester?

In January, the average relative humidity is 84%.

How many days does it rain in January in Rochester?

In January, in Rochester, the rain falls for 9.8 days. Throughout January, 1.97" (50mm) of precipitation is accumulated.

How much does it snow in Rochester in January?

In Rochester, New York, during January, snow falls for 17.6 days and regularly aggregates up to 5.79" (147mm) of snow.

What is the water temperature in January in Rochester?

In January, the average ocean temperature is 37.9°F (3.3°C). 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.

What is the average length of the day in January in Rochester?

In January, the average length of the day in Rochester, New York, is 9.4h.

What is the month with the least sunshine in Rochester?

Months with the least sunshine in Rochester, New York, are January and February, with an average of 2.7h of sunshine.

How many hours of sunshine does Rochester have in January?

In Rochester, New York, the average sunshine in January is 2.7h.

What is the month with the lowest UV index in Rochester?

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

What is the UV index reading in January in Rochester?

The average daily maximum UV index in January is 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in January
Rochester, NY

Average temperature in January - Rochester, NY
  • Average high temperature in January: 29.3°F

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (29.3°F).

  • Average low temperature in January: 19.8°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

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Average pressure in January
Rochester, NY

Average pressure in January - Rochester, NY
  • Average pressure in January: 30.05"

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.92").

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Average wind speed in January
Rochester, NY

Average wind speed in January - Rochester, NY
  • Average wind speed in January: 11.6mph

The windiest month (with the highest average wind speed) is January (11.6mph).
The calmest month (with the lowest average wind speed) is July (7mph).

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Average humidity in January
Rochester, NY

Average humidity in January - Rochester, NY
  • Average humidity in January: 84%

Months with the highest relative humidity are January and February (84%).
Months with the lowest relative humidity are August and September (76%).

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Average rainfall in January
Rochester, NY

Average rainfall in January - Rochester, NY
  • Average rainfall in January: 1.97"

The wettest month (with the highest rainfall) is May (2.99").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in January
Rochester, NY

Average rainfall days in January - Rochester, NY
  • Average rainfall days in January: 9.8 days

The month with the highest number of rainy days is August (18.7 days).
The month with the least rainy days is February (7.8 days).

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Average snowfall in January
Rochester, NY

Average snowfall in January - Rochester, NY
  • Average snowfall in January: 5.79"

The month with the highest snowfall is February (7.01").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Rochester, NY

Average snowfall days in January - Rochester, NY
  • Average snowfall days in January: 17.6 days

The month with the highest number of snowfall days is January (17.6 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in January
Rochester, NY

Average sea temperature in January - Rochester, NY
  • Average sea temperature in January: 38°F

The best month for swimming (with the highest average sea temperature) is August (73°F).
The coldest month (with the lowest average sea temperature) is March (35.8°F).

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

Average daylight in January / Average sunshine in January - Rochester, NY
  • Average daylight in January: 9.4h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in January: 2.7h

The month with the most sunshine is July (Average sunshine: 10.6h).
Months with the least sunshine are January and February (Average sunshine: 2.7).

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Average sunshine days in January
Rochester, NY

Average sunshine days in January - Rochester, NY
  • Average sunshine days in January: 7.2 days

The month with the most sunshine days is September (13.9 days).
The month with the least sunshine days is February (6.7 days).

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Average UV index in January
Rochester, NY

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

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 January
Rochester, NY

Average cloud cover in January - Rochester, NY
  • Average cloud cover in January: 74

The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in January
Rochester, NY

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

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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