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January Weather in Norwich, United States

Last updated: June 24, 2025

In Norwich, United States, the average temperature in January hovers around -5°C (24°F). During this chilly month, temperatures can dip to a bone-chilling -28°C (-18°F), while occasionally peaking at a milder 16°C (62°F). Expect 85 mm (3.4 in) of precipitation spread over roughly 12 days, coupled with a high average humidity of 90%. Prepare accordingly for a wet and cold experience!

January Temperature in Norwich

In January in Norwich, the average temperature is -5°C (24°F). Maximums can reach 16°C (62°F), while minimums can drop as low as -28°C (-18°F). Be prepared for a wide range of temperatures and dress warmly if you plan to travel during this time.

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

The chart illustrates January temperature patterns in Norwich, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Norwich, January typically has an average temperature of -5°C (24°F), with highs reaching up to 16°C (62°F) and lows dropping to around -28°C (-18°F).
JanFebMarAprMayJunJulAugSepOctNovDec242733455765706862523729
Data source: Temperature data for Norwich generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Norwich

In Norwich in January, the precipitation amount is 85 mm (3.4 in) over the course of 12 days.

January Precipitation Trends in Norwich

The chart displays monthly precipitation patterns in Norwich, 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 Norwich, January typically receives around 85 mm (3.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec8596881191271091341179815610398
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Norwich

In Norwich in January, humidity is 90%. With an average temperature of -5°C (24°F), this humidity feels like an icy mist wrapping around you, making every breath feel heavy and damp, while the cold sharpens the chill in the air, turning your travel experience into a battle against the harsh elements.

January Average Humidity in Norwich

This chart illustrates the average monthly humidity levels in Norwich, 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 Norwich is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Norwich

In Norwich in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Norwich, you can check the information here.

Maximum UV Index Levels in Norwich for January

The chart shows the monthly maximum UV Index (UVI) for Norwich 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 Norwich typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346910101098642
Data source: Norwich 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 Norwich Compares to Other Months

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

This table compares monthly weather conditions in Norwich, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)85 mm (3.4 inches)90%moderate
February Weather-3°C (27°F)96 mm (3.8 inches)90%moderate
March Weather0°C (33°F)88 mm (3.5 inches)87%high
April Weather7°C (45°F)119 mm (4.7 inches)88%very high
May Weather14°C (57°F)127 mm (5.0 inches)82%very high
June Weather18°C (65°F)109 mm (4.3 inches)79%very high
July Weather21°C (70°F)134 mm (5.3 inches)78%very high
August Weather20°C (68°F)117 mm (4.6 inches)76%very high
September Weather16°C (62°F)98 mm (3.9 inches)78%very high
October Weather11°C (52°F)156 mm (6.1 inches)84%high
November Weather3°C (37°F)103 mm (4.1 inches)89%moderate
December Weather-1°C (30°F)98 mm (3.9 inches)86%low

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