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August Weather in Lancaster, United States

Last updated: June 24, 2025

In August, the average temperature in Lancaster, United States hovers around 18°C (65°F), making it a delightful time to explore the area. Expect variations, as temperatures can dip to a chilly 4°C (39°F) or soar to a scorching 32°C (89°F). With 92 mm (3.6 in) of precipitation spread across about 13 days, pack an umbrella just in case! Additionally, the air can feel quite humid, with an average humidity level of 74%.

August Temperature in Lancaster

In August in Lancaster, the average temperature is 18°C (65°F). Maximums can reach 32°C (89°F), while minimums can drop as low as 4°C (39°F). This wide temperature range makes Lancaster an ideal destination for travelers who enjoy both warm days and cooler evenings.

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

The chart illustrates August temperature patterns in Lancaster, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lancaster, August typically has an average temperature of 18°C (65°F), with highs reaching up to 32°C (89°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec161926395261666558463121
Data source: Temperature data for Lancaster 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 Lancaster

In Lancaster in August, the precipitation amount is 92 mm (3.6 in) spread over 13 days.

August Precipitation Trends in Lancaster

The chart displays monthly precipitation patterns in Lancaster, 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 Lancaster, August typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec87857512099100107926413011297
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Lancaster

In Lancaster in August humidity is 74%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace that can make even short walks feel laborious, leading travelers to seek shade and refreshment more often.

August Average Humidity in Lancaster

This chart illustrates the average monthly humidity levels in Lancaster, 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 Lancaster is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%85%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Lancaster

In Lancaster 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 Lancaster.

Maximum UV Index Levels in Lancaster for August

The chart shows the monthly maximum UV Index (UVI) for Lancaster 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 Lancaster typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2468910997532
Data source: Lancaster 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 Lancaster Compares to Other Months

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

This table compares monthly weather conditions in Lancaster, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)86 mm (3.4 inches)91%low
February Weather-7°C (19°F)85 mm (3.4 inches)89%moderate
March Weather-3°C (27°F)75 mm (2.9 inches)85%high
April Weather4°C (40°F)120 mm (4.7 inches)84%very high
May Weather11°C (53°F)99 mm (3.9 inches)78%very high
June Weather16°C (62°F)100 mm (3.9 inches)72%very high
July Weather19°C (67°F)107 mm (4.2 inches)75%very high
August Weather18°C (65°F)92 mm (3.6 inches)74%very high
September Weather14°C (58°F)64 mm (2.5 inches)77%high
October Weather8°C (46°F)130 mm (5.1 inches)85%moderate
November Weather0°C (32°F)112 mm (4.4 inches)86%moderate
December Weather-6°C (22°F)97 mm (3.8 inches)85%low

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