April Weather in Norwalk, United States

Last updated: June 24, 2025

In Norwalk, United States, the average temperature in April hovers around 10°C (50°F), with fluctuations ranging from a chilly -10°C (14°F) to a warm 30°C (86°F). Expect about 72 mm (2.9 in) of precipitation spread over 10 days, resulting in a rather humid atmosphere with an average humidity of 77%.

April Temperature in Norwalk

In April in Norwalk, the average temperature is 10°C (50°F). The maximum can reach 30°C (86°F), and the minimum can be as low as -10°C (14°F). Be prepared for a wide range of temperatures when traveling, so pack accordingly!

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

The chart illustrates April 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, April typically has an average temperature of 10°C (50°F), with highs reaching up to 30°C (86°F) and lows dropping to around -10°C (14°F).

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

April Precipitation in Norwalk

In Norwalk in April, the total precipitation amount is 72 mm (2.9 in) over a span of 10 days.

April Precipitation Trends in Norwalk

The chart displays monthly precipitation patterns in Norwalk, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Norwalk, April typically receives around 72 mm (2.9 inches) of precipitation spread over approximately 10 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Norwalk

In Norwalk in April, humidity is 77%. With an average temperature of 10°C (50°F), this humidity feels like a thick, heavy blanket enveloping you, making travel uncomfortable and sticky, as it clings to your skin and clothes, turning each step into a challenge.

April Average Humidity in Norwalk

This chart illustrates the average monthly humidity levels in Norwalk, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Norwalk is approximately 77%, offering insight into how humid the weather typically is during this month.

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

April UV Index in Norwalk

In Norwalk in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Norwalk.

Maximum UV Index Levels in Norwalk for April

The chart shows the monthly maximum UV Index (UVI) for Norwalk in April, 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 April, the maximum UV index in Norwalk typically reaches 8, which falls under the very high exposure category.

Data source: Norwalk April 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 April 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 April’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 April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	38 mm (1.5 inches)	78%	moderate
February Weather	-4°C (24°F)	40 mm (1.6 inches)	80%	moderate
March Weather	4°C (40°F)	83 mm (3.3 inches)	77%	high
April Weather	10°C (50°F)	72 mm (2.9 inches)	77%	very high
May Weather	17°C (63°F)	171 mm (6.7 inches)	77%	very high
June Weather	24°C (75°F)	122 mm (4.8 inches)	81%	extreme
July Weather	25°C (78°F)	67 mm (2.6 inches)	81%	very high
August Weather	24°C (75°F)	82 mm (3.2 inches)	77%	very high
September Weather	20°C (69°F)	112 mm (4.4 inches)	73%	very high
October Weather	11°C (53°F)	126 mm (4.9 inches)	75%	high
November Weather	4°C (39°F)	39 mm (1.5 inches)	85%	moderate
December Weather	0°C (31°F)	37 mm (1.5 inches)	83%	moderate