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August Weather in Heron Lake, United States

Last updated: June 24, 2025

In August, the average temperature in Heron Lake, United States reaches a pleasant 21°C (70°F), with a range from a cool 9°C (49°F) to a warm 34°C (94°F). Expect 115 mm (4.5 in) of precipitation spread across 11 days, contributing to a high average humidity of 80%. This combination creates an inviting atmosphere, perfect for exploring!

August Temperature in Heron Lake

In August in Heron Lake, the average temperature is 21°C (70°F), with maximums reaching 34°C (94°F) and minimums dipping as low as 9°C (49°F). This pleasant climate makes it an ideal time for travelers to explore the area and enjoy outdoor activities.

August Weather in Heron Lake: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Heron Lake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Heron Lake, August typically has an average temperature of 21°C (70°F), with highs reaching up to 34°C (94°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec181733435972747064483425
Data source: Temperature data for Heron Lake 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 Heron Lake

In Heron Lake in August, the total precipitation amount is 115 mm (4.5 in) spread over 11 days.

August Precipitation Trends in Heron Lake

The chart displays monthly precipitation patterns in Heron Lake, 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 Heron Lake, August typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec31316891125127102115110923141
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Heron Lake

In Heron Lake in August humidity is 80%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that can make even short walks feel draining, urging travelers to seek shade or a cool drink frequently.

August Average Humidity in Heron Lake

This chart illustrates the average monthly humidity levels in Heron Lake, 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 Heron Lake is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%84%75%79%74%81%82%80%75%77%85%83%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Heron Lake

In Heron Lake 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 Heron Lake.

Maximum UV Index Levels in Heron Lake for August

The chart shows the monthly maximum UV Index (UVI) for Heron Lake 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 Heron Lake typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35689111098533
Data source: Heron Lake 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 Heron Lake Compares to Other Months

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

This table compares monthly weather conditions in Heron Lake, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)31 mm (1.2 inches)80%moderate
February Weather-8°C (17°F)31 mm (1.2 inches)84%moderate
March Weather1°C (34°F)68 mm (2.7 inches)75%high
April Weather6°C (44°F)91 mm (3.6 inches)79%very high
May Weather15°C (59°F)125 mm (4.9 inches)74%very high
June Weather22°C (72°F)127 mm (5.0 inches)81%extreme
July Weather23°C (74°F)102 mm (4.0 inches)82%very high
August Weather21°C (70°F)115 mm (4.5 inches)80%very high
September Weather18°C (65°F)110 mm (4.3 inches)75%very high
October Weather9°C (48°F)92 mm (3.6 inches)77%moderate
November Weather1°C (34°F)31 mm (1.2 inches)85%moderate
December Weather-4°C (25°F)41 mm (1.6 inches)83%moderate

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