nomadseason

January Weather in Deerfield, United States

Last updated: June 24, 2025

In January, the average temperature in Deerfield, United States hovers around -9°C (16°F). Expect chilly conditions, with minimum temperatures dropping to -30°C (-22°F) and a maximum reaching a mild 11°C (51°F). During this month, precipitation averages 91 mm (3.6 in) over 12 days of rain, accompanied by high humidity levels of 91%.

January Temperature in Deerfield

In January in Deerfield, the average temperature is -9°C (16°F). The maximum can reach 11°C (51°F), while the minimum can plummet to as low as -30°C (-22°F). Travelers should prepare for a wide temperature range and pack accordingly for both cold conditions and occasional mild days.

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

The chart illustrates January temperature patterns in Deerfield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Deerfield, January typically has an average temperature of -9°C (16°F), with highs reaching up to 11°C (51°F) and lows dropping to around -30°C (-22°F).
JanFebMarAprMayJunJulAugSepOctNovDec161925385261666457453020
Data source: Temperature data for Deerfield generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Deerfield

In Deerfield in January, the precipitation amount is 91 mm (3.6 in) over a period of 12 days.

January Precipitation Trends in Deerfield

The chart displays monthly precipitation patterns in Deerfield, 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 Deerfield, January typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec92928213611112013911274147123112
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Deerfield

In Deerfield in January humidity is 91%. With an average temperature of -9°C (16°F), this humidity feels like a heavy veil wrapping around you, making outdoor exploration quite challenging as you navigate through the chilly air that seems to cling to your skin.

January Average Humidity in Deerfield

This chart illustrates the average monthly humidity levels in Deerfield, 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 Deerfield is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%85%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Deerfield

In Deerfield 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 Deerfield, you can visit Hourly UV Index in Deerfield.

Maximum UV Index Levels in Deerfield for January

The chart shows the monthly maximum UV Index (UVI) for Deerfield 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 Deerfield typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2468910997532
Data source: Deerfield 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 Deerfield Compares to Other Months

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

This table compares monthly weather conditions in Deerfield, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)91 mm (3.6 inches)91%low
February Weather-7°C (19°F)92 mm (3.6 inches)89%moderate
March Weather-4°C (26°F)82 mm (3.2 inches)85%high
April Weather3°C (39°F)136 mm (5.4 inches)84%very high
May Weather11°C (52°F)110 mm (4.4 inches)78%very high
June Weather16°C (61°F)120 mm (4.7 inches)72%very high
July Weather19°C (66°F)139 mm (5.5 inches)75%very high
August Weather18°C (64°F)112 mm (4.4 inches)74%very high
September Weather14°C (57°F)74 mm (2.9 inches)77%high
October Weather7°C (46°F)146 mm (5.8 inches)85%moderate
November Weather-1°C (31°F)123 mm (4.8 inches)86%moderate
December Weather-6°C (21°F)112 mm (4.4 inches)85%low

Compare Deerfield's Climate with Cities Worldwide