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January Weather in Glen Ullin, United States

Last updated: June 24, 2025

In January, the average temperature in Glen Ullin, United States hovers around -8°C (17°F). Expect minimum lows plunging to -32°C (-26°F), while the maximum can reach a milder 10°C (50°F). During this month, anticipate approximately 12 mm (0.5 in) of precipitation over 3 days, with an average humidity of 84%.

January Temperature in Glen Ullin

In January in Glen Ullin, the average temperature is -8°C (17°F). The maximum can reach 10°C (50°F), while the minimum can drop as low as -32°C (-26°F). Be prepared for a wide range of temperatures during your travels, and pack accordingly to ensure a comfortable experience.

January Weather in Glen Ullin: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Glen Ullin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Glen Ullin, January typically has an average temperature of -8°C (17°F), with highs reaching up to 10°C (50°F) and lows dropping to around -32°C (-26°F).
JanFebMarAprMayJunJulAugSepOctNovDec171430405568736960433123
Data source: Temperature data for Glen Ullin 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 Glen Ullin

In Glen Ullin in January, the precipitation amount is 12 mm (0.5 in) during a span of 3 days.

January Precipitation Trends in Glen Ullin

The chart displays monthly precipitation patterns in Glen Ullin, 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 Glen Ullin, January typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec121625286154617252511720
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Glen Ullin

In Glen Ullin in January, humidity is 84%. With an average temperature of -8°C (17°F), this humidity feels like biting cold air wrapping around you, making each breath feel heavy and damp, and adding an extra chill that can make traveling quite uncomfortable.

January Average Humidity in Glen Ullin

This chart illustrates the average monthly humidity levels in Glen Ullin, 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 Glen Ullin is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%88%78%75%76%79%78%78%69%71%82%84%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Glen Ullin

In Glen Ullin 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 Glen Ullin, you can visit Hourly UV Index in Glen Ullin.

Maximum UV Index Levels in Glen Ullin for January

The chart shows the monthly maximum UV Index (UVI) for Glen Ullin 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 Glen Ullin typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2459810997532
Data source: Glen Ullin 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 Glen Ullin Compares to Other Months

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

This table compares monthly weather conditions in Glen Ullin, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (17°F)12 mm (0.5 inches)84%low
February Weather-10°C (14°F)16 mm (0.6 inches)88%moderate
March Weather-1°C (31°F)25 mm (1.0 inches)78%moderate
April Weather4°C (40°F)28 mm (1.1 inches)75%very high
May Weather13°C (55°F)61 mm (2.4 inches)76%very high
June Weather20°C (68°F)54 mm (2.1 inches)79%very high
July Weather23°C (73°F)61 mm (2.4 inches)78%very high
August Weather21°C (70°F)72 mm (2.8 inches)78%very high
September Weather16°C (60°F)51 mm (2.0 inches)69%high
October Weather6°C (43°F)51 mm (2.0 inches)71%moderate
November Weather-1°C (31°F)17 mm (0.7 inches)82%moderate
December Weather-5°C (23°F)20 mm (0.8 inches)84%low

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