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September Weather in Jasper, United States

Last updated: June 24, 2025

In September, the average temperature in Jasper, United States is a pleasant 23°C (74°F). However, temperatures can range from a cool 6°C (44°F) to a warm 35°C (95°F). You can expect 72 mm (2.8 in) of precipitation spread over about 6 days, with an average humidity of 64%. Enjoy the balance of warmth and refreshing moisture!

September Temperature in Jasper

In September in Jasper, the average temperature is 23°C (74°F), with maximums reaching up to 35°C (95°F) and minimums dipping as low as 6°C (44°F). This makes Jasper a great destination for travelers seeking a variety of experiences in comfortable weather.

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

The chart illustrates September temperature patterns in Jasper, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jasper, September typically has an average temperature of 23°C (74°F), with highs reaching up to 35°C (95°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec363850566777807773594742
Data source: Temperature data for Jasper 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 Jasper

In Jasper in September, the total precipitation amount is 72 mm (2.8 in) over the course of 6 days.

September Precipitation Trends in Jasper

The chart displays monthly precipitation patterns in Jasper, 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 Jasper, September typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec78671381321728789114721375746
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Jasper

In Jasper in September, humidity is 64%. With an average temperature of 23°C (74°F), this humidity feels like a warm blanket wrapping around you, making outdoor exploration enjoyable yet slightly sticky, so it's best to stay hydrated and take breaks in the shade while traveling.

September Average Humidity in Jasper

This chart illustrates the average monthly humidity levels in Jasper, 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 Jasper is approximately 64%, 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 September generated using information from the Copernicus Climate Change Service.

September UV Index in Jasper

In Jasper in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Jasper.

Maximum UV Index Levels in Jasper for September

The chart shows the monthly maximum UV Index (UVI) for Jasper 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 Jasper typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Jasper 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 Jasper Compares to Other Months

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

This table compares monthly weather conditions in Jasper, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)78 mm (3.1 inches)81%moderate
February Weather3°C (38°F)67 mm (2.6 inches)78%high
March Weather10°C (50°F)138 mm (5.4 inches)76%high
April Weather14°C (57°F)132 mm (5.2 inches)78%very high
May Weather19°C (67°F)172 mm (6.8 inches)83%very high
June Weather25°C (77°F)87 mm (3.4 inches)83%extreme
July Weather27°C (80°F)89 mm (3.5 inches)78%extreme
August Weather25°C (78°F)114 mm (4.5 inches)68%very high
September Weather23°C (74°F)72 mm (2.8 inches)64%very high
October Weather15°C (60°F)137 mm (5.4 inches)70%high
November Weather8°C (47°F)57 mm (2.2 inches)83%moderate
December Weather5°C (42°F)46 mm (1.8 inches)87%moderate

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