nomadseason

April Weather in Watertown, United States

Last updated: June 24, 2025

In April, the average temperature in Watertown, United States hovers around 5°C (41°F), making it a brisk time of year. Expect lows dipping to -17°C (2°F) and highs soaring up to 28°C (82°F). Precipitation is fairly common, with an average of 65 mm (2.6 in) over 9 days, while the average humidity sits at a notably high 82%. Prepare accordingly for an intriguing blend of weather conditions!

April Temperature in Watertown

In April in Watertown, the average temperature is 5°C (41°F). The maximum can reach 28°C (82°F), while the minimum can dip as low as -17°C (2°F). Be prepared for a wide range of temperatures when traveling during this month.

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

The chart illustrates April temperature patterns in Watertown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Watertown, April typically has an average temperature of 5°C (41°F), with highs reaching up to 28°C (82°F) and lows dropping to around -17°C (2°F).
JanFebMarAprMayJunJulAugSepOctNovDec151430405670736962453223
Data source: Temperature data for Watertown generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Watertown

In Watertown in April, the precipitation amount is 65 mm (2.6 in) over the course of 9 days.

April Precipitation Trends in Watertown

The chart displays monthly precipitation patterns in Watertown, 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 Watertown, April typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec2217486591848111384802533
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

April Humidity in Watertown

In Watertown in April, humidity is 82%. With an average temperature of 5°C (41°F), this humidity feels like a chilly, damp blanket wrapping around you, making outdoor activities less enjoyable and making it essential to dress in layers to stay warm while navigating the wet conditions.

April Average Humidity in Watertown

This chart illustrates the average monthly humidity levels in Watertown, 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 Watertown is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%89%81%82%76%81%82%83%82%82%87%84%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Watertown

In Watertown in April, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Watertown.

Maximum UV Index Levels in Watertown for April

The chart shows the monthly maximum UV Index (UVI) for Watertown 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 Watertown typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3567910998532
Data source: Watertown 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 Watertown Compares to Other Months

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

This table compares monthly weather conditions in Watertown, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (15°F)22 mm (0.9 inches)85%moderate
February Weather-10°C (14°F)17 mm (0.7 inches)89%moderate
March Weather-1°C (31°F)48 mm (1.9 inches)81%high
April Weather5°C (41°F)65 mm (2.6 inches)82%high
May Weather13°C (56°F)90 mm (3.6 inches)76%very high
June Weather21°C (70°F)84 mm (3.3 inches)81%very high
July Weather23°C (73°F)81 mm (3.2 inches)82%very high
August Weather21°C (70°F)113 mm (4.4 inches)83%very high
September Weather17°C (62°F)84 mm (3.3 inches)82%very high
October Weather7°C (46°F)80 mm (3.1 inches)82%moderate
November Weather0°C (33°F)25 mm (1.0 inches)87%moderate
December Weather-5°C (23°F)33 mm (1.3 inches)84%low

Compare Watertown's Climate with Cities Worldwide