nomadseason

September Weather in Gallatin Gateway, United States

Last updated: June 24, 2025

In Gallatin Gateway, United States, the average temperature in September hovers around 11°C (52°F). During this month, temperatures can fluctuate between a chilly -6°C (21°F) and a warm 31°C (87°F). Expect about 59 mm (2.3 in) of precipitation spread over approximately 8 days, with an average humidity level of 67%.

September Temperature in Gallatin Gateway

In September in Gallatin Gateway, the average temperature is 11°C (52°F), with maximums reaching up to 31°C (87°F) and minimums dipping as low as -6°C (21°F). It's advisable to pack for a range of temperatures to ensure a comfortable travel experience.

September Weather in Gallatin Gateway: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Gallatin Gateway, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gallatin Gateway, September typically has an average temperature of 11°C (52°F), with highs reaching up to 31°C (87°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec191727334254626151352619
Data source: Temperature data for Gallatin Gateway generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Gallatin Gateway

In Gallatin Gateway in September, the total precipitation amount is 59 mm (2.3 in) spread over 8 days.

September Precipitation Trends in Gallatin Gateway

The chart displays monthly precipitation patterns in Gallatin Gateway, 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 Gallatin Gateway, September typically receives around 59 mm (2.3 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec34675488101107405359765442
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Gallatin Gateway

In Gallatin Gateway in September humidity is 67%. With an average temperature of 11°C (52°F), this humidity feels like a cool, damp embrace that can make you feel chilly and uncomfortable while traveling, especially if you're not dressed appropriately for the moisture in the air.

September Average Humidity in Gallatin Gateway

This chart illustrates the average monthly humidity levels in Gallatin Gateway, 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 Gallatin Gateway is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%90%83%79%76%74%69%67%72%89%94%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Gallatin Gateway

In Gallatin Gateway 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 Gallatin Gateway.

Maximum UV Index Levels in Gallatin Gateway for September

The chart shows the monthly maximum UV Index (UVI) for Gallatin Gateway 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 Gallatin Gateway typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3578111110108642
Data source: Gallatin Gateway 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 Gallatin Gateway Compares to Other Months

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

This table compares monthly weather conditions in Gallatin Gateway, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (19°F)34 mm (1.3 inches)93%moderate
February Weather-8°C (17°F)66 mm (2.6 inches)92%moderate
March Weather-3°C (28°F)54 mm (2.1 inches)89%high
April Weather0°C (33°F)88 mm (3.5 inches)83%very high
May Weather6°C (42°F)101 mm (4.0 inches)79%extreme
June Weather12°C (54°F)107 mm (4.2 inches)76%extreme
July Weather17°C (63°F)40 mm (1.6 inches)74%very high
August Weather16°C (61°F)53 mm (2.1 inches)69%very high
September Weather11°C (52°F)59 mm (2.3 inches)67%very high
October Weather2°C (35°F)76 mm (3.0 inches)72%high
November Weather-3°C (26°F)54 mm (2.1 inches)89%moderate
December Weather-7°C (19°F)42 mm (1.6 inches)94%low

Compare Gallatin Gateway's Climate with Cities Worldwide