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September Weather in Glendive, United States

Last updated: June 24, 2025

In Glendive, United States, the average temperature in September hovers around 16°C (62°F), with fluctuations that can see lows of -2°C (29°F) and highs reaching 36°C (97°F). During this time, expect about 57 mm (2.3 in) of precipitation over 5 days, all while enjoying an average humidity level of 68%.

September Temperature in Glendive

In September in Glendive, the average temperature is 16°C (62°F). Maximums can reach 36°C (97°F) and minimums can be as low as -2°C (29°F). Be prepared for a wide range of temperatures when traveling to Glendive during this time.

September Weather in Glendive: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Glendive, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Glendive, September typically has an average temperature of 16°C (62°F), with highs reaching up to 36°C (97°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec201533425668757261443325
Data source: Temperature data for Glendive 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.

September Precipitation in Glendive

In Glendive in September, the total precipitation amount is 57 mm (2.3 in) accumulated over 5 days.

September Precipitation Trends in Glendive

The chart displays monthly precipitation patterns in Glendive, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Glendive, September typically receives around 57 mm (2.3 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec112216305548293557371817
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Glendive

In Glendive in September, humidity is 68%. With an average temperature of 16°C (62°F), this humidity feels like a soft blanket enveloping you, making the air feel heavier and the day slightly warmer, which can be refreshing yet occasionally stifling for traveling.

September Average Humidity in Glendive

This chart illustrates the average monthly humidity levels in Glendive, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Glendive is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%86%77%72%77%79%78%74%68%70%80%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Glendive

In Glendive in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Glendive.

Maximum UV Index Levels in Glendive for September

The chart shows the monthly maximum UV Index (UVI) for Glendive in September, 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 September, the maximum UV index in Glendive typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24598101098532
Data source: Glendive September 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 September Weather in Glendive Compares to Other Months

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

This table compares monthly weather conditions in Glendive, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (20°F)11 mm (0.4 inches)83%low
February Weather-9°C (16°F)22 mm (0.9 inches)86%moderate
March Weather0°C (33°F)16 mm (0.6 inches)77%moderate
April Weather5°C (42°F)30 mm (1.2 inches)72%very high
May Weather13°C (56°F)55 mm (2.2 inches)77%very high
June Weather20°C (69°F)48 mm (1.9 inches)79%very high
July Weather24°C (76°F)29 mm (1.1 inches)78%very high
August Weather22°C (72°F)35 mm (1.4 inches)74%very high
September Weather16°C (62°F)57 mm (2.3 inches)68%very high
October Weather7°C (44°F)37 mm (1.5 inches)70%moderate
November Weather1°C (33°F)18 mm (0.7 inches)80%moderate
December Weather-4°C (25°F)17 mm (0.7 inches)84%low

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