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September Weather in Castle Dale, United States

Last updated: June 24, 2025

In September, the average temperature in Castle Dale, United States hovers around a comfortable 17°C (64°F). However, be prepared for a range, as temperatures can dip to a brisk -3°C (26°F) or soar to a warm 34°C (94°F). During this month, you can expect 21 mm (0.8 in) of precipitation spread over 4 days, with an average humidity level of 47%. Stay versatile and enjoy the varying weather!

September Temperature in Castle Dale

In September in Castle Dale, the average temperature is 17°C (64°F). The maximum can reach 34°C (94°F), while the minimum can drop as low as -3°C (26°F). This unpredictable weather makes it essential for travelers to pack layers and prepare for a variety of conditions.

September Weather in Castle Dale: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Castle Dale, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castle Dale, September typically has an average temperature of 17°C (64°F), with highs reaching up to 34°C (94°F) and lows dropping to around -3°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec232737465569757363463725
Data source: Temperature data for Castle Dale 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 Castle Dale

In Castle Dale in September, the precipitation amount is 21 mm (0.8 in) over a span of 4 days.

September Precipitation Trends in Castle Dale

The chart displays monthly precipitation patterns in Castle Dale, 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 Castle Dale, September typically receives around 21 mm (0.8 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec293138193111232121302026
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Castle Dale

In Castle Dale in September, humidity is 47%. With an average temperature of 17°C (64°F), this humidity feels like a refreshing embrace, making it pleasant for outdoor activities and sightseeing, allowing travelers to explore comfortably without feeling sticky or overheated.

September Average Humidity in Castle Dale

This chart illustrates the average monthly humidity levels in Castle Dale, 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 Castle Dale 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 Castle Dale

In Castle Dale 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 Castle Dale.

Maximum UV Index Levels in Castle Dale for September

The chart shows the monthly maximum UV Index (UVI) for Castle Dale 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 Castle Dale typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469101112121110754
Data source: Castle Dale 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 Castle Dale Compares to Other Months

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

This table compares monthly weather conditions in Castle Dale, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)29 mm (1.2 inches)87%moderate
February Weather-3°C (27°F)31 mm (1.2 inches)88%high
March Weather3°C (38°F)38 mm (1.5 inches)77%very high
April Weather8°C (46°F)19 mm (0.7 inches)69%very high
May Weather13°C (56°F)31 mm (1.2 inches)54%extreme
June Weather21°C (69°F)11 mm (0.4 inches)45%extreme
July Weather24°C (76°F)23 mm (0.9 inches)37%extreme
August Weather23°C (73°F)21 mm (0.8 inches)34%extreme
September Weather17°C (64°F)21 mm (0.8 inches)47%very high
October Weather8°C (46°F)30 mm (1.2 inches)67%high
November Weather3°C (37°F)20 mm (0.8 inches)82%moderate
December Weather-4°C (25°F)26 mm (1.0 inches)87%moderate

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