January Weather in Ithaca, United States

Last updated: June 24, 2025

In January, the average temperature in Ithaca, United States hovers around -4°C (25°F), with chilly lows plummeting to -26°C (-14°F) and highs reaching a mild 15°C (58°F). Expect approximately 59 mm (2.3 in) of precipitation spread over about 8 days, accompanied by a high average humidity of 88%. Prepare for a frosty experience!

January Temperature in Ithaca

In January in Ithaca, the average temperature is -4°C (25°F), with maximums reaching up to 15°C (58°F) and minimums dropping as low as -26°C (-14°F). This range of temperatures makes it essential to pack warm clothing and be prepared for chilly conditions while enjoying your travels.

January Weather in Ithaca: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Ithaca, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ithaca, January typically has an average temperature of -4°C (25°F), with highs reaching up to 15°C (58°F) and lows dropping to around -26°C (-14°F).

Data source: Temperature data for Ithaca generated using information from the Copernicus Climate Change Service.

January Precipitation in Ithaca

In Ithaca in January, the total precipitation amount is 59 mm (2.3 in) spread over 8 days.

January Precipitation Trends in Ithaca

The chart displays monthly precipitation patterns in Ithaca, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Ithaca, January typically receives around 59 mm (2.3 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Ithaca

In Ithaca in January, humidity is 88%. With an average temperature of -4°C (25°F), this humidity feels like a biting chill that clings to your skin, making outdoor excursions brisk and invigorating, yet challenging as you navigate the frosty air.

January Average Humidity in Ithaca

This chart illustrates the average monthly humidity levels in Ithaca, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Ithaca is approximately 88%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Ithaca

In Ithaca in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Ithaca, you can visit Hourly UV Index in Ithaca.

Maximum UV Index Levels in Ithaca for January

The chart shows the monthly maximum UV Index (UVI) for Ithaca in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Ithaca typically reaches 2, which falls under the low exposure category.

Data source: Ithaca January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Ithaca Compares to Other Months

Weather in Ithaca varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Ithaca, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Ithaca, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	59 mm (2.3 inches)	88%	low
February Weather	-3°C (26°F)	63 mm (2.5 inches)	87%	moderate
March Weather	2°C (36°F)	60 mm (2.4 inches)	85%	moderate
April Weather	8°C (46°F)	87 mm (3.4 inches)	86%	very high
May Weather	15°C (59°F)	116 mm (4.6 inches)	80%	very high
June Weather	21°C (69°F)	120 mm (4.7 inches)	80%	very high
July Weather	23°C (75°F)	63 mm (2.5 inches)	80%	very high
August Weather	22°C (72°F)	71 mm (2.8 inches)	80%	very high
September Weather	18°C (65°F)	104 mm (4.1 inches)	80%	high
October Weather	11°C (53°F)	114 mm (4.5 inches)	84%	moderate
November Weather	3°C (38°F)	59 mm (2.3 inches)	89%	moderate
December Weather	-1°C (31°F)	62 mm (2.4 inches)	86%	low