September Weather in Onamia, United States

Last updated: June 24, 2025

In September, the average temperature in Onamia, United States hovers around 17°C (62°F), with a minimum dipping to 1°C (35°F) and a maximum soaring to 30°C (87°F). Expect 114 mm (4.5 in) of precipitation spread over 10 days, coupled with an average humidity of 81%. Overall, it's a month that balances warmth with a touch of moisture!

September Temperature in Onamia

In September in Onamia, the average temperature is 17°C (62°F), with maximums reaching 30°C (87°F) and minimums dropping as low as 1°C (35°F). It's advisable to pack layers to prepare for the varying temperatures while enjoying your travels.

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

The chart illustrates September temperature patterns in Onamia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Onamia, September typically has an average temperature of 17°C (62°F), with highs reaching up to 30°C (87°F) and lows dropping to around 1°C (35°F).

Data source: Temperature data for Onamia generated using information from the Copernicus Climate Change Service.

September Precipitation in Onamia

In Onamia in September, the precipitation amount is 114 mm (4.5 in) over a period of 10 days.

September Precipitation Trends in Onamia

The chart displays monthly precipitation patterns in Onamia, 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 Onamia, September typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Onamia

In Onamia in September, humidity is 81%. With an average temperature of 17°C (62°F), this humidity feels like a warm blanket enveloping you, making outdoor adventures feel sticky and requiring frequent breaks to stay comfortable while exploring.

September Average Humidity in Onamia

This chart illustrates the average monthly humidity levels in Onamia, 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 Onamia is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Onamia

In Onamia in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Onamia.

Maximum UV Index Levels in Onamia for September

The chart shows the monthly maximum UV Index (UVI) for Onamia 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 Onamia typically reaches 7, which falls under the high exposure category.

Data source: Onamia 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 Onamia Compares to Other Months

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

This table compares monthly weather conditions in Onamia, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-10°C (13°F)	19 mm (0.7 inches)	87%	low
February Weather	-10°C (14°F)	26 mm (1.0 inches)	90%	moderate
March Weather	-1°C (30°F)	47 mm (1.8 inches)	85%	moderate
April Weather	4°C (40°F)	79 mm (3.1 inches)	84%	high
May Weather	13°C (56°F)	83 mm (3.3 inches)	78%	very high
June Weather	21°C (69°F)	87 mm (3.4 inches)	80%	very high
July Weather	23°C (73°F)	104 mm (4.1 inches)	81%	very high
August Weather	21°C (69°F)	130 mm (5.1 inches)	81%	very high
September Weather	17°C (62°F)	114 mm (4.5 inches)	81%	high
October Weather	8°C (46°F)	120 mm (4.7 inches)	84%	moderate
November Weather	-1°C (31°F)	35 mm (1.4 inches)	88%	moderate
December Weather	-6°C (21°F)	52 mm (2.0 inches)	84%	low