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April Weather in Wilton, United States

Last updated: June 24, 2025

In April, the average temperature in Wilton, United States is a cool 4°C (39°F), with a temperature range that can dip to a brisk -20°C (-4°F) and peak at a pleasant 25°C (76°F). Expect 28 mm (1.1 in) of precipitation spread over about 7 days, while the average humidity hovers around 75%, adding a touch of chill to the air.

April Temperature in Wilton

In April in Wilton, the average temperature is 4°C (39°F), with maximums reaching 25°C (76°F) and minimums plummeting to -20°C (-4°F). This wide temperature range makes it essential for travelers to pack layers to stay comfortable during their visit.

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

The chart illustrates April temperature patterns in Wilton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wilton, April typically has an average temperature of 4°C (39°F), with highs reaching up to 25°C (76°F) and lows dropping to around -20°C (-4°F).
JanFebMarAprMayJunJulAugSepOctNovDec131128385568726859432920
Data source: Temperature data for Wilton 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.

April Precipitation in Wilton

In Wilton in April, the precipitation amount is 28 mm (1.1 in) over a period of 7 days.

April Precipitation Trends in Wilton

The chart displays monthly precipitation patterns in Wilton, 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 Wilton, April typically receives around 28 mm (1.1 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec131726284559656765501923
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Wilton

In Wilton in April humidity is 75%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that can seep into your bones, making outdoor activities less enjoyable and necessitating warm, layered clothing for any travel plans.

April Average Humidity in Wilton

This chart illustrates the average monthly humidity levels in Wilton, 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 Wilton is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%88%78%75%76%79%78%78%69%71%82%84%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Wilton

In Wilton in April, 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 Wilton.

Maximum UV Index Levels in Wilton for April

The chart shows the monthly maximum UV Index (UVI) for Wilton 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 Wilton typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2459810987532
Data source: Wilton 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 Wilton Compares to Other Months

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

This table compares monthly weather conditions in Wilton, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-11°C (13°F)13 mm (0.5 inches)84%low
February Weather-12°C (11°F)17 mm (0.7 inches)88%moderate
March Weather-2°C (28°F)26 mm (1.0 inches)78%moderate
April Weather4°C (39°F)28 mm (1.1 inches)75%very high
May Weather13°C (55°F)45 mm (1.8 inches)76%very high
June Weather20°C (68°F)59 mm (2.3 inches)79%very high
July Weather22°C (72°F)65 mm (2.5 inches)78%very high
August Weather20°C (69°F)67 mm (2.6 inches)78%very high
September Weather15°C (60°F)65 mm (2.6 inches)69%high
October Weather6°C (43°F)50 mm (2.0 inches)71%moderate
November Weather-1°C (30°F)19 mm (0.8 inches)82%moderate
December Weather-7°C (20°F)23 mm (0.9 inches)84%low

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