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August Weather in Upland, United States

Last updated: June 24, 2025

In Upland, United States, the average temperature in August is a pleasant 23°C (73°F). However, temperatures can fluctuate, with minimums dipping to 11°C (52°F) and soaring to a maximum of 34°C (93°F). Expect 100 mm (3.9 in) of precipitation over about 11 days, contributing to an average humidity level of 79%.

August Temperature in Upland

In August in Upland, the average temperature is 23°C (73°F). Maximums can reach 34°C (93°F), and minimums can be as low as 11°C (52°F). This diverse range of temperatures makes it an ideal time for travelers to enjoy both warm days and cooler evenings.

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

The chart illustrates August temperature patterns in Upland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Upland, August typically has an average temperature of 23°C (73°F), with highs reaching up to 34°C (93°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec293241516373767368574135
Data source: Temperature data for Upland 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 Upland

In Upland in August, the precipitation amount is 100 mm (3.9 in) over the course of 11 days.

August Precipitation Trends in Upland

The chart displays monthly precipitation patterns in Upland, 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 Upland, August typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec768610494133106107100711018368
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Upland

In Upland in August humidity is 79%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace that clings to the skin, making travel feel both invigorating and slightly exhausting as the air wraps around you like a damp blanket.

August Average Humidity in Upland

This chart illustrates the average monthly humidity levels in Upland, 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 Upland is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%86%87%81%82%81%79%78%81%89%86%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Upland

In Upland 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 Upland.

Maximum UV Index Levels in Upland for August

The chart shows the monthly maximum UV Index (UVI) for Upland 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 Upland typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098642
Data source: Upland 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 Upland Compares to Other Months

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

This table compares monthly weather conditions in Upland, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)76 mm (3.0 inches)85%moderate
February Weather0°C (32°F)86 mm (3.4 inches)85%moderate
March Weather5°C (42°F)104 mm (4.1 inches)86%high
April Weather10°C (51°F)94 mm (3.7 inches)87%very high
May Weather17°C (63°F)133 mm (5.3 inches)81%very high
June Weather23°C (73°F)106 mm (4.2 inches)82%extreme
July Weather24°C (76°F)106 mm (4.2 inches)81%very high
August Weather23°C (73°F)100 mm (3.9 inches)79%very high
September Weather20°C (69°F)71 mm (2.8 inches)78%very high
October Weather14°C (57°F)101 mm (4.0 inches)81%high
November Weather5°C (41°F)83 mm (3.3 inches)89%moderate
December Weather2°C (35°F)68 mm (2.7 inches)86%low

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