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August Weather in Saint Joseph, United States

Last updated: June 24, 2025

In August, the average temperature in Saint Joseph, United States is a pleasant 25°C (76°F). However, be prepared for a range of temperatures, as it can dip to a minimum of 12°C (53°F) and soar to a maximum of 37°C (99°F). Expect 106 mm (4.2 in) of precipitation spread over 9 days, coupled with a comfortable average humidity of 78%.

August Temperature in Saint Joseph

In August in Saint Joseph, the average temperature is 25°C (76°F). Maximums can reach 37°C (99°F), while minimums can drop as low as 12°C (53°F). This makes it a great time for travelers to enjoy warm days and cooler evenings, perfect for exploring or relaxing outdoors.

August Weather in Saint Joseph: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Saint Joseph, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Joseph, August typically has an average temperature of 25°C (76°F), with highs reaching up to 37°C (99°F) and lows dropping to around 12°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec293045536577797671554336
Data source: Temperature data for Saint Joseph 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 Saint Joseph

In Saint Joseph in August, the total precipitation amount is 106 mm (4.2 in), spread over the course of 9 days.

August Precipitation Trends in Saint Joseph

The chart displays monthly precipitation patterns in Saint Joseph, 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 Saint Joseph, August typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec4634918218012997106851324737
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Saint Joseph

In Saint Joseph in August humidity is 78%. With an average temperature of 25°C (76°F), this humidity feels like walking through a warm, damp blanket, making travel a bit uncomfortable as you may find yourself sweating freely and longing for a cool breeze.

August Average Humidity in Saint Joseph

This chart illustrates the average monthly humidity levels in Saint Joseph, 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 Saint Joseph is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%78%75%77%82%83%81%78%72%72%84%86%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Saint Joseph

In Saint Joseph in August, 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 Saint Joseph.

Maximum UV Index Levels in Saint Joseph for August

The chart shows the monthly maximum UV Index (UVI) for Saint Joseph 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 Saint Joseph typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
Data source: Saint Joseph 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 Saint Joseph Compares to Other Months

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

This table compares monthly weather conditions in Saint Joseph, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)46 mm (1.8 inches)80%moderate
February Weather-1°C (31°F)34 mm (1.3 inches)78%moderate
March Weather7°C (45°F)91 mm (3.6 inches)75%high
April Weather12°C (53°F)82 mm (3.2 inches)77%very high
May Weather18°C (65°F)180 mm (7.1 inches)82%very high
June Weather25°C (77°F)129 mm (5.1 inches)83%extreme
July Weather26°C (79°F)97 mm (3.8 inches)81%extreme
August Weather25°C (76°F)106 mm (4.2 inches)78%very high
September Weather22°C (71°F)85 mm (3.4 inches)72%very high
October Weather13°C (56°F)132 mm (5.2 inches)72%high
November Weather6°C (43°F)47 mm (1.8 inches)84%moderate
December Weather2°C (36°F)37 mm (1.4 inches)86%moderate

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