August Weather in Stamford, United States

Last updated: June 24, 2025

In Stamford, United States, the average temperature in August is a pleasant 20°C (68°F). The temperature can vary significantly, with minimums dipping to 6°C (44°F) and maximums soaring up to 32°C (89°F). Visitors can expect about 110 mm (4.3 in) of precipitation spread over 12 days, contributing to an average humidity of 64%. Enjoy the diverse weather this month has to offer!

August Temperature in Stamford

In August in Stamford, the average temperature is 20°C (68°F). Maximums can reach 32°C (89°F), while minimums can drop as low as 6°C (44°F). This makes it a great time for travelers to enjoy a range of outdoor activities while being prepared for varying temperatures.

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

The chart illustrates August temperature patterns in Stamford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stamford, August typically has an average temperature of 20°C (68°F), with highs reaching up to 32°C (89°F) and lows dropping to around 6°C (44°F).

Data source: Temperature data for Stamford generated using information from the Copernicus Climate Change Service.

August Precipitation in Stamford

In Stamford in August, the precipitation amount is 110 mm (4.3 in) over a span of 12 days.

August Precipitation Trends in Stamford

The chart displays monthly precipitation patterns in Stamford, 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 Stamford, August typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Stamford

In Stamford in August humidity is 64%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, making it a perfect time for travelers to explore, though they might want to stay hydrated and take breaks in the shade to fully enjoy the experience.

August Average Humidity in Stamford

This chart illustrates the average monthly humidity levels in Stamford, 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 Stamford is approximately 64%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Stamford

In Stamford 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 Stamford.

Maximum UV Index Levels in Stamford for August

The chart shows the monthly maximum UV Index (UVI) for Stamford 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 Stamford typically reaches 9, which falls under the very high exposure category.

Data source: Stamford 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 Stamford Compares to Other Months

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

This table compares monthly weather conditions in Stamford, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (24°F)	75 mm (2.9 inches)	89%	moderate
February Weather	-3°C (27°F)	93 mm (3.7 inches)	88%	moderate
March Weather	0°C (33°F)	88 mm (3.4 inches)	86%	high
April Weather	7°C (44°F)	115 mm (4.5 inches)	84%	very high
May Weather	13°C (56°F)	115 mm (4.5 inches)	76%	very high
June Weather	18°C (65°F)	99 mm (3.9 inches)	72%	very high
July Weather	21°C (70°F)	118 mm (4.6 inches)	66%	very high
August Weather	20°C (68°F)	110 mm (4.3 inches)	64%	very high
September Weather	16°C (62°F)	96 mm (3.8 inches)	72%	very high
October Weather	11°C (51°F)	137 mm (5.4 inches)	81%	high
November Weather	2°C (37°F)	94 mm (3.7 inches)	87%	moderate
December Weather	-2°C (29°F)	93 mm (3.7 inches)	84%	low