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April Weather in Charlestown, United States

Last updated: June 24, 2025

In April, the average temperature in Charlestown, United States hovers around 13°C (56°F), with minimums dipping to -3°C (28°F) and highs reaching up to 29°C (85°F). Expect a precipitation amount of 137 mm (5.4 in) over 11 days, accompanied by an average humidity of 84%. Embrace the varied weather this month brings!

April Temperature in Charlestown

In April in Charlestown, the average temperature is 13°C (56°F). The maximum can reach 29°C (85°F), and the minimum can be as low as -3°C (28°F). Travelers should be prepared for a wide range of temperatures and pack accordingly to enjoy their visit.

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

The chart illustrates April temperature patterns in Charlestown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Charlestown, April typically has an average temperature of 13°C (56°F), with highs reaching up to 29°C (85°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec353947556775787671604540
Data source: Temperature data for Charlestown 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 Charlestown

In Charlestown in April, the total precipitation amount reaches 137 mm (5.4 in) over a span of 11 days.

April Precipitation Trends in Charlestown

The chart displays monthly precipitation patterns in Charlestown, 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 Charlestown, April typically receives around 137 mm (5.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec8512013413712814595961059992104
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Charlestown

In Charlestown in April, humidity is 84%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making it feel cooler and more uncomfortable for traveling, as the air clings to your skin and weighs you down with a sense of heaviness.

April Average Humidity in Charlestown

This chart illustrates the average monthly humidity levels in Charlestown, 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 Charlestown is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Charlestown

In Charlestown 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 Charlestown.

Maximum UV Index Levels in Charlestown for April

The chart shows the monthly maximum UV Index (UVI) for Charlestown 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 Charlestown typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110108743
Data source: Charlestown 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 Charlestown Compares to Other Months

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

This table compares monthly weather conditions in Charlestown, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)85 mm (3.3 inches)87%moderate
February Weather4°C (39°F)120 mm (4.7 inches)85%moderate
March Weather8°C (47°F)134 mm (5.3 inches)86%high
April Weather13°C (56°F)137 mm (5.4 inches)84%very high
May Weather19°C (67°F)128 mm (5.1 inches)79%very high
June Weather24°C (75°F)145 mm (5.7 inches)82%extreme
July Weather26°C (78°F)95 mm (3.8 inches)79%very high
August Weather24°C (76°F)96 mm (3.8 inches)70%very high
September Weather22°C (72°F)104 mm (4.1 inches)69%very high
October Weather16°C (60°F)99 mm (3.9 inches)76%high
November Weather7°C (45°F)92 mm (3.6 inches)88%moderate
December Weather5°C (40°F)104 mm (4.1 inches)87%moderate

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