January weather forecast and climate
Commack, NY

January, the same as December, is another cold winter month in Commack, New York, with average temperature ranging between max 37.6°F (3.1°C) and min 28.9°F (-1.7°C).

Temperature

January is the coldest month, with an average high-temperature of 37.6°F (3.1°C) and an average low-temperature of 28.9°F (-1.7°C).

Humidity

The average relative humidity in January is 72%.

Rainfall

January is the month with the least rainfall. Rain falls for 7.8 days and accumulates 2.2" (56mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall in Commack. In Commack, New York, in January, during 4.2 snowfall days, 1.14" (29mm) of snow is typically accumulated. In Commack, during the entire year, snow falls for 15.4 days, and aggregates up to 5.71" (145mm) of snow.

Daylight

The average length of the day in January is 9.6h.

Sunshine

The average sunshine in January is 5.2h.

UV index

Months with the lowest UV index are January through March and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 2 transform into the following instructions:
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 Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the coldest month in Commack?

The coldest month is January, with an average high-temperature of 37.6°F (3.1°C) and an average low-temperature of 28.9°F (-1.7°C).

What is the temperature in January in Commack?

In Commack, New York, in January, the average high-temperature is 37.6°F (3.1°C), and the average low-temperature is 28.9°F (-1.7°C).

What is the average humidity in January in Commack?

In Commack, the average relative humidity in January is 72%.

How much does it rain in Commack in January?

In Commack, in January, during 7.8 rainfall days, 2.2" (56mm) of precipitation is typically accumulated.

What is the driest month in Commack?

The month with the least rainfall is January when the rain falls for 7.8 days and typically collects 2.2" (56mm) of precipitation.

How many days does it snow in January in Commack?

In Commack, New York, in January, snow falls for 4.2 days, with typically accumulated 1.14" (29mm) of snow.

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

In January, the average length of the day is 9.6h.

How many hours of sunshine does Commack have in January?

In Commack, New York, the average sunshine in January is 5.2h.

What are the months with the lowest UV index in Commack?

January through March and December, with an average maximum UV index of 2, are months with the lowest UV index in Commack.

What is the UV index intensity in January in Commack?

In January, the average daily maximum UV index in Commack is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV radiation.
Average temperature in January - Commack, NY
  • Average high temperature in January: 37.6°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (37.6°F).

  • Average low temperature in January: 28.9°F

The month with the highest average low temperature is August (71.6°F).
The coldest month (with the lowest average low temperature) is January (28.9°F).

Average pressure in January - Commack, 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 (29.93").

Average wind speed in January - Commack, NY
  • Average wind speed in January: 12.8mph

The windiest month (with the highest average wind speed) is January (12.8mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).

Average humidity in January - Commack, NY
  • Average humidity in January: 72%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is November (71%).

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

The wettest month (with the highest rainfall) is July (3.94").
The driest month (with the least rainfall) is January (2.2").

Average rainfall days in January - Commack, NY
  • Average rainfall days in January: 7.8 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is January (7.8 days).

Average snowfall in January - Commack, NY
  • Average snowfall in January: 1.14"

The month with the highest snowfall is March (1.85").
Months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in January - Commack, NY
  • Average snowfall days in January: 4.2 days

The month with the highest number of snowfall days is February (4.8 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in January / Average sunshine in January - Commack, NY
  • Average daylight in January: 9.6h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in January: 5.2h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 4.8h).

Average sunshine days in January - Commack, NY
  • Average sunshine days in January: 18.5 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (11.4 days).

Average UV index in January - Commack, NY
  • Average UV index in January: 2

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March and December (UV index 2).

Average cloud cover in January - Commack, NY
  • Average cloud cover in January: 44

The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in January - Commack, NY
  • Average visibility in January: 6mi

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