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September Weather in Helper, United States

Last updated: June 24, 2025

In Helper, United States, the average temperature in September hovers around 15°C (60°F), offering a pleasant climate. However, temperatures can vary significantly, with a minimum of -4°C (25°F) and a maximum reaching up to 32°C (91°F). Expect light precipitation, averaging 22 mm (0.9 in) over about 4 days, while the average humidity remains at a comfortable 47%.

September Temperature in Helper

In September in Helper, the average temperature is 15°C (60°F). The maximum can reach 32°C (91°F), while the minimum can drop as low as -4°C (25°F). Visitors should be prepared for a wide temperature range, ensuring they pack both warm and light clothing for a comfortable trip.

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

The chart illustrates September temperature patterns in Helper, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Helper, September typically has an average temperature of 15°C (60°F), with highs reaching up to 32°C (91°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec222534415165716960433424
Data source: Temperature data for Helper 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 Helper

In Helper in September, the precipitation amount is 22 mm (0.9 in) over a duration of 4 days.

September Precipitation Trends in Helper

The chart displays monthly precipitation patterns in Helper, 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 Helper, September typically receives around 22 mm (0.9 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec343642214315222222302633
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Helper

In Helper in September, humidity is 47%. With an average temperature of 15°C (60°F), this humidity feels like a comfortable embrace, making travel enjoyable and pleasant as you explore the sights without feeling overly sticky or weighed down.

September Average Humidity in Helper

This chart illustrates the average monthly humidity levels in Helper, 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 Helper is approximately 47%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%77%70%54%45%37%34%47%67%82%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Helper

In Helper in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Helper.

Maximum UV Index Levels in Helper for September

The chart shows the monthly maximum UV Index (UVI) for Helper 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 Helper typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101112121110753
Data source: Helper 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 Helper Compares to Other Months

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

This table compares monthly weather conditions in Helper, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)34 mm (1.3 inches)87%moderate
February Weather-4°C (25°F)36 mm (1.4 inches)88%high
March Weather1°C (34°F)42 mm (1.6 inches)77%very high
April Weather5°C (42°F)21 mm (0.8 inches)69%very high
May Weather11°C (51°F)43 mm (1.7 inches)54%extreme
June Weather18°C (65°F)15 mm (0.6 inches)45%extreme
July Weather22°C (71°F)22 mm (0.9 inches)37%extreme
August Weather20°C (69°F)22 mm (0.9 inches)34%extreme
September Weather15°C (60°F)22 mm (0.9 inches)47%very high
October Weather6°C (43°F)30 mm (1.2 inches)67%high
November Weather1°C (34°F)26 mm (1.0 inches)82%moderate
December Weather-5°C (24°F)33 mm (1.3 inches)87%moderate

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