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January Weather in Reading, United States

Last updated: June 24, 2025

In January, the average temperature in Reading, United States hovers around -3°C (27°F). Expect a chilly range, where temperatures can drop to a frigid -28°C (-18°F) at their lowest, while occasionally peaking at a mild 16°C (60°F). This period sees about 72 mm (2.9 in) of precipitation spread across 9 days, contributing to an average humidity of 88%, creating a brisk and damp atmosphere.

January Temperature in Reading

In January in Reading, the average temperature is -3°C (27°F), with maximums reaching up to 16°C (60°F) and minimums dropping as low as -28°C (-18°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable during their visit.

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

The chart illustrates January temperature patterns in Reading, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Reading, January typically has an average temperature of -3°C (27°F), with highs reaching up to 16°C (60°F) and lows dropping to around -28°C (-18°F).
JanFebMarAprMayJunJulAugSepOctNovDec272838476070747266543933
Data source: Temperature data for Reading 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 Reading

In Reading in January, the total precipitation amount is 72 mm (2.9 in), occurring over the course of 9 days.

January Precipitation Trends in Reading

The chart displays monthly precipitation patterns in Reading, 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 Reading, January typically receives around 72 mm (2.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec72739610214111612794671128358
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Reading

In Reading in January humidity is 88%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that seeps into your bones, making outdoor exploration less inviting as the dampness clings to your clothing and slows your movements.

January Average Humidity in Reading

This chart illustrates the average monthly humidity levels in Reading, 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 Reading is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Reading

In Reading 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 Reading, you can check the information here.

Maximum UV Index Levels in Reading for January

The chart shows the monthly maximum UV Index (UVI) for Reading 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 Reading typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35699101098642
Data source: Reading 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 Reading Compares to Other Months

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

This table compares monthly weather conditions in Reading, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)72 mm (2.9 inches)88%moderate
February Weather-2°C (28°F)73 mm (2.9 inches)87%moderate
March Weather3°C (38°F)96 mm (3.8 inches)87%high
April Weather9°C (48°F)102 mm (4.0 inches)87%very high
May Weather16°C (61°F)141 mm (5.6 inches)81%very high
June Weather21°C (71°F)116 mm (4.6 inches)82%very high
July Weather24°C (75°F)127 mm (5.0 inches)81%very high
August Weather22°C (72°F)94 mm (3.7 inches)78%very high
September Weather19°C (66°F)67 mm (2.6 inches)78%very high
October Weather12°C (54°F)111 mm (4.4 inches)82%high
November Weather4°C (39°F)83 mm (3.3 inches)89%moderate
December Weather0°C (33°F)58 mm (2.3 inches)86%low

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