January weather - Winter 2025

Weather in January
Frequently asked questions
Average temperature in January
Average pressure in January
Average wind speed in January
Average humidity in January
Average rainfall in January
Average rainfall days in January
Average snowfall in January
Average snowfall days in January
Average daylight in January
Average sunshine in January
Average sunshine days in January
Average UV index in January
Average cloud cover in January
Average visibility in January

A monument from the civil war stands high in the neat lawns near the iconic courthouse in the Courthouse Park in Cortland, New York

Weather in January

The New Year in Cortland, New York, begins with January, embodying the true spirit of winter. Temperatures roughly circle between 15.8°F (-9°C) and 27°F (-2.8°C), making it one of the coldest months of the year. Snowfall reaches 4.49" (114mm), and the wind gusts frequently hit speeds of 15.9mph (25.6km/h). Cortland gets enveloped in a white blanket, transforming the city into a picturesque winter wonderland. The frosty weather persists, underlining the importance of adequate cold-weather preparations.

Temperature

With an average high-temperature of 27°F (-2.8°C) and an average low-temperature of 15.8°F (-9°C), January is the coldest month.

Humidity

The months with the highest humidity are January and February, with an average relative humidity of 88%.

Rainfall

In Cortland, in January, it is raining for 5.9 days, with typically 1.42" (36mm) of accumulated precipitation. In Cortland, during the entire year, the rain falls for 149.8 days and collects up to 22.36" (568mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Cortland, in January, during 18.2 snowfall days, 4.49" (114mm) of snow is typically accumulated. In Cortland, during the entire year, snow falls for 79.7 days and aggregates up to 24.06" (611mm) of snow.

Daylight

In January, the average length of the day is 9h and 29min.
On the first day of the month, sunrise is at 7:34 am and sunset at 4:41 pm. On the last day of January, sunrise is at 7:19 am and sunset at 5:16 pm EST.

Sunshine

In January, the average sunshine is 2.7h.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: During January, 1 as the daily maximum UV index converts into the following advice:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. Stay sun-safe with clothing that is both closely woven and worn loosely. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.

Updated: Jun 8, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

With average temperatures fluctuating between a high of 27°F (-2.8°C) and a low of 15.8°F (-9°C), January stands out as the coldest month.

How cold is January?

During January, Cortland experiences an average high-temperature of 27°F (-2.8°C) and a low-temperature of 15.8°F (-9°C).

What are the most humid months?

January and February, with an average relative humidity of 88%, are most humid months.

What is the average humidity in January?

The average relative humidity in January is 88%.

How much does it rain in January?

In January, the rain falls for 5.9 days. Throughout January, 1.42" (36mm) of precipitation is accumulated.

How many days does it snow in January in Cortland?

In January, it is snowing for 18.2 days. Throughout January, 4.49" (114mm) of snow is accumulated.

How many hours of daylight does Cortland have in January?

In Cortland, the average day length in January is 9h and 29min.

When are sunrise and sunset in January?

On the first day of January, sunrise is at 7:34 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:16 pm EST.

How many hours of sunshine does Cortland have in January?

In Cortland, the average sunshine duration in January is 2.7h.

What is the month with the lowest UV index?

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

How high is the UV index in January?

In January, the average daily maximum UV index is 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

33.1°F 0.6°C

27°F -2.8°C

30.2°F -1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

10.3mph 16.6km/h

10.5mph 16.9km/h

10.3mph 16.6km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

9.9

9.3

7.7

Average UV index

Average cloud cover

Average visibility

Average temperature in January
Cortland, NY

Average high temperature in January: 27°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 (27°F).

Average low temperature in January: 15.8°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).

Average pressure in January
Cortland, NY

Average pressure in January: 30.06"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in January
Cortland, NY

Average wind speed in January: 9.8mph

The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

Average humidity in January
Cortland, NY

Average humidity in January: 88%

The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are April and May (80%).

Average rainfall in January
Cortland, NY

Average rainfall in January: 1.42"

The wettest months (with the highest rainfall) are May and July (2.48").
The driest month (with the least rainfall) is November (1.34").

Average rainfall days in January
Cortland, NY

Average rainfall days in January: 5.9 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (5.7 days).

Average snowfall in January
Cortland, NY

Average snowfall in January: 4.49"

The month with the highest snowfall is February (5.75").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Cortland, NY

Average snowfall days in January: 18.2 days

The month with the highest number of snowfall days is January (18.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January: 9h and 3min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

Average sunshine in January: 2h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 24min).

Average sunshine days in January
Cortland, NY

Average sunshine days in January: 9.3 days

The month with the most sunshine days is September (15.8 days).
The month with the least sunshine days is February (7.7 days).

Average UV index in January
Cortland, NY

Average UV index in January: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).

Average cloud cover in January
Cortland, NY

Average cloud cover in January: 74

The months with the most cloud cover are January and February (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 36).

Average visibility in January
Cortland, NY

Average visibility in January: 5mi

The month with the highest visibility is April (6mi).
The month with the lowest visibility is February (4mi).

January weather forecast
Cortland, NY

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