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January Weather in Millersville, United States

Last updated: June 24, 2025

In January, the average temperature in Millersville, United States is a cool 5°C (40°F), with extremes ranging from a chilly -15°C (5°F) to a warm 23°C (73°F). Expect a total precipitation of 102 mm (4.0 in) over approximately 10 days, contributing to an average humidity level of a muggy 87%. Whether you're bundling up or braving the rain, be prepared for a mix of weather!

January Temperature in Millersville

In January in Millersville, the average temperature is 5°C (40°F). The maximum can reach 23°C (73°F) and the minimum can be as low as -15°C (5°F). Be prepared for a wide range of temperatures when traveling to Millersville during this time.

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

The chart illustrates January temperature patterns in Millersville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Millersville, January typically has an average temperature of 5°C (40°F), with highs reaching up to 23°C (73°F) and lows dropping to around -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec404552597077807874634845
Data source: Temperature data for Millersville 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 Millersville

In Millersville in January, the total precipitation amount is 102 mm (4.0 in) falling over the course of 10 days.

January Precipitation Trends in Millersville

The chart displays monthly precipitation patterns in Millersville, 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 Millersville, January typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec10218016415012213513813213014182145
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Millersville

In Millersville in January, humidity is 87%. With an average temperature of 5°C (40°F), this humidity feels like a damp chill that wraps around you, making outdoor excursions less enjoyable and requiring extra layers to stay comfortable while exploring.

January Average Humidity in Millersville

This chart illustrates the average monthly humidity levels in Millersville, 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 Millersville is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Millersville

In Millersville 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 Millersville, you can check the information here.

Maximum UV Index Levels in Millersville for January

The chart shows the monthly maximum UV Index (UVI) for Millersville 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 Millersville typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Millersville 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 Millersville Compares to Other Months

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

This table compares monthly weather conditions in Millersville, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (40°F)102 mm (4.0 inches)87%moderate
February Weather7°C (45°F)180 mm (7.1 inches)86%high
March Weather11°C (52°F)164 mm (6.4 inches)86%high
April Weather15°C (59°F)150 mm (5.9 inches)82%very high
May Weather21°C (70°F)122 mm (4.8 inches)82%very high
June Weather25°C (77°F)135 mm (5.3 inches)83%extreme
July Weather27°C (80°F)138 mm (5.4 inches)80%extreme
August Weather26°C (78°F)131 mm (5.2 inches)74%very high
September Weather23°C (74°F)130 mm (5.1 inches)71%very high
October Weather17°C (63°F)141 mm (5.5 inches)78%high
November Weather9°C (48°F)82 mm (3.2 inches)88%moderate
December Weather7°C (45°F)145 mm (5.7 inches)88%moderate

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