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January Weather in Diamond City, United States

Last updated: June 24, 2025

In January, the average temperature in Diamond City, United States hovers around 3°C (38°F), but be prepared for a range of conditions! Nighttime lows can plunge to a chilling -17°C (2°F), while daytime highs may surprisingly reach 22°C (72°F). Expect about 80 mm (3.2 in) of precipitation over 8 days, with a notable average humidity of 81%. Stay cozy and enjoy the diversity of this season!

January Temperature in Diamond City

In January in Diamond City, the average temperature is 3°C (38°F). Maximum temperatures can reach 22°C (72°F), while minimums can drop as low as -17°C (2°F). This range makes it essential for travelers to pack a variety of clothing to stay comfortable in changing weather conditions.

January Weather in Diamond City: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Diamond City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Diamond City, January typically has an average temperature of 3°C (38°F), with highs reaching up to 22°C (72°F) and lows dropping to around -17°C (2°F).
JanFebMarAprMayJunJulAugSepOctNovDec374051576776807874614843
Data source: Temperature data for Diamond City 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 Diamond City

In Diamond City in January, the total precipitation amount is 80 mm (3.2 in), occurring over a span of 8 days.

January Precipitation Trends in Diamond City

The chart displays monthly precipitation patterns in Diamond City, 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 Diamond City, January typically receives around 80 mm (3.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec80991441591829377125511207278
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Diamond City

In Diamond City in January, humidity is 81%. With an average temperature of 3°C (38°F), this humidity feels like a heavy blanket wrapped around you, making outdoor activities uncomfortable and travel challenging due to the cold, damp air.

January Average Humidity in Diamond City

This chart illustrates the average monthly humidity levels in Diamond City, 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 Diamond City is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%78%76%78%83%83%78%68%64%70%83%87%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Diamond City

In Diamond City 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 Diamond City, you can check the information here.

Maximum UV Index Levels in Diamond City for January

The chart shows the monthly maximum UV Index (UVI) for Diamond City 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 Diamond City typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36810111111109753
Data source: Diamond City 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 Diamond City Compares to Other Months

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

This table compares monthly weather conditions in Diamond City, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)80 mm (3.2 inches)81%moderate
February Weather5°C (40°F)99 mm (3.9 inches)78%high
March Weather10°C (51°F)144 mm (5.7 inches)76%very high
April Weather14°C (57°F)159 mm (6.3 inches)78%very high
May Weather20°C (67°F)182 mm (7.2 inches)83%extreme
June Weather24°C (76°F)93 mm (3.7 inches)83%extreme
July Weather27°C (80°F)77 mm (3.0 inches)78%extreme
August Weather25°C (78°F)125 mm (4.9 inches)68%very high
September Weather23°C (74°F)51 mm (2.0 inches)64%very high
October Weather16°C (61°F)119 mm (4.7 inches)70%high
November Weather9°C (48°F)72 mm (2.8 inches)83%moderate
December Weather6°C (43°F)78 mm (3.1 inches)87%moderate

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