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September Weather in Pocatello, United States

Last updated: June 24, 2025

In September, the average temperature in Pocatello, United States hovers around 16°C (62°F). You can expect a minimum drop to 1°C (33°F) and a possible peak of 35°C (96°F). Precipitation is relatively light, with around 32 mm (1.3 in) falling over 5 days, while the average humidity sits at a comfortable 46%.

September Temperature in Pocatello

In September in Pocatello, the average temperature is 16°C (62°F). Maximums can reach 35°C (96°F) and minimums can be as low as 1°C (33°F). Be prepared for a wide range of temperatures if you're planning to travel during this time.

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

The chart illustrates September temperature patterns in Pocatello, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pocatello, September typically has an average temperature of 16°C (62°F), with highs reaching up to 35°C (96°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec242736445464747262453625
Data source: Temperature data for Pocatello 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 Pocatello

In Pocatello in September, the precipitation amount is 32 mm (1.3 in) over the course of 5 days.

September Precipitation Trends in Pocatello

The chart displays monthly precipitation patterns in Pocatello, 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 Pocatello, September typically receives around 32 mm (1.3 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec516550595630152032443651
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Pocatello

In Pocatello in September, humidity is 46%. With an average temperature of 16°C (62°F), this humidity feels like a mild and refreshing embrace, making it a comfortable time for traveling as you can explore the sights without feeling overly sticky or fatigued.

September Average Humidity in Pocatello

This chart illustrates the average monthly humidity levels in Pocatello, 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 Pocatello is approximately 46%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%92%85%76%66%62%53%42%46%64%83%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Pocatello

In Pocatello 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 Pocatello.

Maximum UV Index Levels in Pocatello for September

The chart shows the monthly maximum UV Index (UVI) for Pocatello 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 Pocatello typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589101111109643
Data source: Pocatello 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 Pocatello Compares to Other Months

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

This table compares monthly weather conditions in Pocatello, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)51 mm (2.0 inches)91%moderate
February Weather-3°C (27°F)65 mm (2.5 inches)92%moderate
March Weather2°C (36°F)50 mm (2.0 inches)85%very high
April Weather7°C (44°F)59 mm (2.3 inches)76%very high
May Weather12°C (54°F)56 mm (2.2 inches)66%very high
June Weather18°C (65°F)30 mm (1.2 inches)62%extreme
July Weather23°C (74°F)15 mm (0.6 inches)53%extreme
August Weather22°C (72°F)20 mm (0.8 inches)42%very high
September Weather16°C (62°F)32 mm (1.3 inches)46%very high
October Weather7°C (46°F)44 mm (1.7 inches)64%high
November Weather2°C (36°F)36 mm (1.4 inches)83%moderate
December Weather-4°C (26°F)51 mm (2.0 inches)87%moderate

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