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October Weather in Glen Ullin, United States

Last updated: June 24, 2025

In Glen Ullin, United States, the average temperature in October hovers around 6°C (43°F), but be prepared for a wide range: temperatures can dip to a chilly -16°C (4°F) or soar to a balmy 32°C (90°F). With an average precipitation of 51 mm (2.0 in) spread over 7 days, don't forget your umbrella! The air is fairly humid, with an average humidity level of 71%, adding to the atmosphere of this unique locale.

October Temperature in Glen Ullin

In October in Glen Ullin, the average temperature is 6°C (43°F), with maximums reaching up to 32°C (90°F) and minimums dipping as low as -16°C (4°F). Travelers should be prepared for a wide range of temperatures during this month, from chilly to pleasantly warm.

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

The chart illustrates October 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, October typically has an average temperature of 6°C (43°F), with highs reaching up to 32°C (90°F) and lows dropping to around -16°C (4°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.

October Precipitation in Glen Ullin

In Glen Ullin in October, the precipitation amount is 51 mm (2.0 in) over a period of 7 days.

October Precipitation Trends in Glen Ullin

The chart displays monthly precipitation patterns in Glen Ullin, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Glen Ullin, October typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec121625286154617252511720
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Glen Ullin

In Glen Ullin in October humidity is 71%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable, compelling travelers to bundle up and seek warmth indoors.

October Average Humidity in Glen Ullin

This chart illustrates the average monthly humidity levels in Glen Ullin, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Glen Ullin is approximately 71%, 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 October generated using information from the Copernicus Climate Change Service.

October UV Index in Glen Ullin

In Glen Ullin in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Glen Ullin.

Maximum UV Index Levels in Glen Ullin for October

The chart shows the monthly maximum UV Index (UVI) for Glen Ullin in October, 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 October, the maximum UV index in Glen Ullin typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2459810997532
Data source: Glen Ullin October 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 October 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 October’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 October’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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