May Weather in Norwalk, United States

Last updated: June 24, 2025

In May, the average temperature in Norwalk, United States is a pleasant 18°C (65°F). Expect fluctuations, with a minimum of 8°C (47°F) and a maximum of 34°C (93°F). During this time, anticipate 16 mm (0.6 in) of precipitation over about 3 days, contributing to an average humidity of 70%. It's a month of varied weather that invites both outdoor adventures and cozy indoor moments!

May Temperature in Norwalk

In May in Norwalk, the average temperature is 18°C (65°F). Maximum temperatures can reach up to 34°C (93°F), while minimums can drop to as low as 8°C (47°F). This makes it an ideal time for travelers who enjoy mild weather with a mix of warm and cool days.

May Weather in Norwalk: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Norwalk, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Norwalk, May typically has an average temperature of 18°C (65°F), with highs reaching up to 34°C (93°F) and lows dropping to around 8°C (47°F).

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

May Precipitation in Norwalk

In Norwalk in May, the precipitation amount is 16 mm (0.6 in), spread over a duration of 3 days.

May Precipitation Trends in Norwalk

The chart displays monthly precipitation patterns in Norwalk, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Norwalk, May typically receives around 16 mm (0.6 inches) of precipitation spread over approximately 3 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Norwalk

In Norwalk in May humidity is 70%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making it quite comfortable for traveling, though it can leave you feeling slightly sticky if you're on the move for too long.

May Average Humidity in Norwalk

This chart illustrates the average monthly humidity levels in Norwalk, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Norwalk is approximately 70%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Norwalk

In Norwalk in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Norwalk.

Maximum UV Index Levels in Norwalk for May

The chart shows the monthly maximum UV Index (UVI) for Norwalk in May, 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 May, the maximum UV index in Norwalk typically reaches 10, which falls under the very high exposure category.

Data source: Norwalk May 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 May Weather in Norwalk Compares to Other Months

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

This table compares monthly weather conditions in Norwalk, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	75 mm (3.0 inches)	74%	moderate
February Weather	13°C (56°F)	63 mm (2.5 inches)	79%	high
March Weather	14°C (58°F)	67 mm (2.7 inches)	75%	very high
April Weather	17°C (63°F)	23 mm (0.9 inches)	70%	very high
May Weather	18°C (65°F)	16 mm (0.6 inches)	70%	very high
June Weather	21°C (70°F)	3 mm (0.1 inches)	72%	extreme
July Weather	24°C (76°F)	2 mm (0.1 inches)	73%	extreme
August Weather	25°C (76°F)	2 mm (0.1 inches)	69%	very high
September Weather	23°C (74°F)	4 mm (0.1 inches)	68%	very high
October Weather	20°C (69°F)	10 mm (0.4 inches)	67%	high
November Weather	17°C (62°F)	20 mm (0.8 inches)	68%	moderate
December Weather	13°C (56°F)	72 mm (2.8 inches)	71%	moderate