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August Weather in Waterbury, United States

Last updated: June 24, 2025

In August, the average temperature in Waterbury, United States hovers around 19°C (66°F). Visitors can expect a minimum temperature of 3°C (38°F) and a warm maximum of 31°C (89°F). With 104 mm (4.1 in) of precipitation spread over 14 days, a bit of rain is likely, and average humidity sits at a comfortable 75%. Prepare for a mix of pleasant warmth and occasional showers!

August Temperature in Waterbury

In August in Waterbury, the average temperature is 19°C (66°F). Maximums can reach 31°C (89°F) and minimums can be as low as 3°C (38°F). It's best to pack for warm days and cool evenings while exploring this vibrant destination.

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

The chart illustrates August temperature patterns in Waterbury, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waterbury, August typically has an average temperature of 19°C (66°F), with highs reaching up to 31°C (89°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec172128415463686659473223
Data source: Temperature data for Waterbury 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 Waterbury

In Waterbury in August, the precipitation amount is 104 mm (4.1 in) distributed over a span of 14 days.

August Precipitation Trends in Waterbury

The chart displays monthly precipitation patterns in Waterbury, 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 Waterbury, August typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec8789841251101211401057915811792
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Waterbury

In Waterbury in August humidity is 75%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making it slightly uncomfortable for traveling as you navigate through the thick, muggy air.

August Average Humidity in Waterbury

This chart illustrates the average monthly humidity levels in Waterbury, 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 Waterbury is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%86%85%80%74%76%75%78%86%89%89%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Waterbury

In Waterbury 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 Waterbury.

Maximum UV Index Levels in Waterbury for August

The chart shows the monthly maximum UV Index (UVI) for Waterbury 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 Waterbury typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: Waterbury 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 Waterbury Compares to Other Months

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

This table compares monthly weather conditions in Waterbury, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)87 mm (3.4 inches)93%low
February Weather-6°C (21°F)89 mm (3.5 inches)92%moderate
March Weather-2°C (28°F)84 mm (3.3 inches)86%moderate
April Weather5°C (41°F)125 mm (4.9 inches)85%very high
May Weather12°C (54°F)110 mm (4.3 inches)80%very high
June Weather17°C (63°F)121 mm (4.8 inches)74%very high
July Weather20°C (68°F)140 mm (5.5 inches)76%very high
August Weather19°C (66°F)104 mm (4.1 inches)75%very high
September Weather15°C (59°F)79 mm (3.1 inches)78%high
October Weather9°C (48°F)158 mm (6.2 inches)86%moderate
November Weather0°C (32°F)117 mm (4.6 inches)88%moderate
December Weather-5°C (23°F)92 mm (3.6 inches)89%low

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