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August Weather in Onawa, United States

Last updated: June 24, 2025

In August, the average temperature in Onawa, United States is a pleasant 23°C (74°F), with a minimum of 10°C (50°F) and a peak of 36°C (97°F). Expect around 110 mm (4.3 in) of precipitation spread over 8 days, resulting in an average humidity of 80%. Enjoy the mild weather while staying prepared for occasional rain!

August Temperature in Onawa

In August in Onawa, the average temperature is 23°C (74°F). Maximum can reach 36°C (97°F), and the minimum can be as low as 10°C (50°F). This makes Onawa an ideal destination for travelers seeking warm weather while still having the option for cooler evenings.

August Weather in Onawa: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Onawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Onawa, August typically has an average temperature of 23°C (74°F), with highs reaching up to 36°C (97°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec242439496275777368523830
Data source: Temperature data for Onawa 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.

August Precipitation in Onawa

In Onawa in August, the precipitation amount is 110 mm (4.3 in) over a period of 8 days.

August Precipitation Trends in Onawa

The chart displays monthly precipitation patterns in Onawa, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Onawa, August typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec273383711421146411091942940
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Onawa

In Onawa in August humidity is 80%. With an average temperature of 23°C (74°F), this humidity feels like walking through a warm, damp blanket, making travel feel sticky and muggy, where every step leaves you yearning for a cool breeze.

August Average Humidity in Onawa

This chart illustrates the average monthly humidity levels in Onawa, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Onawa is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%73%75%78%82%83%81%75%75%82%83%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Onawa

In Onawa in August, 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 Onawa.

Maximum UV Index Levels in Onawa for August

The chart shows the monthly maximum UV Index (UVI) for Onawa in August, 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 August, the maximum UV index in Onawa typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589111098642
Data source: Onawa August 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 August Weather in Onawa Compares to Other Months

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

This table compares monthly weather conditions in Onawa, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)27 mm (1.1 inches)76%moderate
February Weather-5°C (24°F)33 mm (1.3 inches)80%moderate
March Weather4°C (40°F)83 mm (3.3 inches)73%moderate
April Weather9°C (49°F)71 mm (2.8 inches)74%very high
May Weather16°C (62°F)142 mm (5.6 inches)78%very high
June Weather24°C (75°F)114 mm (4.5 inches)82%extreme
July Weather25°C (77°F)64 mm (2.5 inches)83%very high
August Weather23°C (74°F)110 mm (4.3 inches)80%very high
September Weather20°C (69°F)91 mm (3.6 inches)75%very high
October Weather11°C (52°F)94 mm (3.7 inches)75%high
November Weather4°C (39°F)29 mm (1.1 inches)82%moderate
December Weather-1°C (30°F)40 mm (1.6 inches)83%low

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