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August Weather in Mercer, United States

Last updated: June 24, 2025

In August, the average temperature in Mercer, United States hovers around 18°C (65°F). Expect temperatures to range from a cool 6°C (43°F) to a warm 32°C (90°F). Precipitation is quite notable, with 126 mm (5.0 in) falling over 13 days. Additionally, the atmosphere tends to be humid, with an average humidity level of 71%.

August Temperature in Mercer

In August in Mercer, the average temperature is 18°C (65°F). The maximum can reach 32°C (90°F), while the minimum can be as low as 6°C (43°F). This makes it a great time for travelers to enjoy a variety of outdoor activities, from warm sunny days to cooler evenings.

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

The chart illustrates August temperature patterns in Mercer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mercer, August typically has an average temperature of 18°C (65°F), with highs reaching up to 32°C (90°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec141427375465696558442920
Data source: Temperature data for Mercer 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 Mercer

In Mercer in August, the precipitation amount is 126 mm (5.0 in) over the course of 13 days.

August Precipitation Trends in Mercer

The chart displays monthly precipitation patterns in Mercer, 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 Mercer, August typically receives around 126 mm (5.0 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec36515392100121110126981185871
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Mercer

In Mercer in August humidity is 71%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making it a bit sticky and muggy, which can be slightly uncomfortable for traveling, especially if you're engaging in outdoor activities or exploring the city on foot.

August Average Humidity in Mercer

This chart illustrates the average monthly humidity levels in Mercer, 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 Mercer is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%93%89%85%76%71%70%71%73%82%88%91%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Mercer

In Mercer in August, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Mercer.

Maximum UV Index Levels in Mercer for August

The chart shows the monthly maximum UV Index (UVI) for Mercer 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 Mercer typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457810987532
Data source: Mercer 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 Mercer Compares to Other Months

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

This table compares monthly weather conditions in Mercer, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (14°F)36 mm (1.4 inches)93%low
February Weather-10°C (14°F)51 mm (2.0 inches)93%moderate
March Weather-3°C (27°F)53 mm (2.1 inches)89%moderate
April Weather3°C (37°F)92 mm (3.6 inches)85%high
May Weather12°C (54°F)100 mm (3.9 inches)76%very high
June Weather18°C (65°F)121 mm (4.8 inches)71%very high
July Weather20°C (69°F)110 mm (4.3 inches)70%very high
August Weather18°C (65°F)126 mm (5.0 inches)71%very high
September Weather14°C (58°F)98 mm (3.9 inches)73%high
October Weather7°C (44°F)118 mm (4.7 inches)81%moderate
November Weather-2°C (29°F)58 mm (2.3 inches)87%moderate
December Weather-7°C (20°F)70 mm (2.8 inches)91%low

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