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April Weather in Mercer, United States

Last updated: June 24, 2025

In April, the average temperature in Mercer, United States hovers around 9°C (49°F), with extremes ranging from a chilly -5°C (23°F) to a balmy 28°C (83°F). Expect 144 mm (5.7 in) of precipitation spread over approximately 16 days, resulting in a high average humidity of 87%. Be prepared for a mix of cool and wet days!

April Temperature in Mercer

In April in Mercer, the average temperature is 9°C (49°F). Maximums can reach 28°C (83°F), while minimums can be as low as -5°C (23°F). Be prepared for both warm and chilly weather during your travels.

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

The chart illustrates April temperature patterns in Mercer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mercer, April typically has an average temperature of 9°C (49°F), with highs reaching up to 28°C (83°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec283138486068737165554034
Data source: Temperature data for Mercer 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 Mercer

In Mercer in April, the total precipitation amount is 144 mm (5.7 in), which occurs over a span of 16 days.

April Precipitation Trends in Mercer

The chart displays monthly precipitation patterns in Mercer, 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 Mercer, April typically receives around 144 mm (5.7 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec101110115144149140146105113127109106
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Mercer

In Mercer in April humidity is 87%. With an average temperature of 9°C (49°F), this humidity feels like a damp blanket wrapping around you, making travel uncomfortable and leaving you yearning for a dry breeze to refresh your spirit.

April Average Humidity in Mercer

This chart illustrates the average monthly humidity levels in Mercer, 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 Mercer is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%87%81%83%82%76%77%82%89%86%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Mercer

In Mercer 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 Mercer.

Maximum UV Index Levels in Mercer for April

The chart shows the monthly maximum UV Index (UVI) for Mercer 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 Mercer typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Mercer 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 Mercer Compares to Other Months

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

This table compares monthly weather conditions in Mercer, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)101 mm (4.0 inches)88%moderate
February Weather0°C (32°F)110 mm (4.3 inches)88%moderate
March Weather4°C (39°F)115 mm (4.5 inches)87%high
April Weather9°C (49°F)144 mm (5.7 inches)87%very high
May Weather16°C (60°F)149 mm (5.9 inches)81%very high
June Weather20°C (68°F)140 mm (5.5 inches)83%very high
July Weather23°C (73°F)146 mm (5.8 inches)82%very high
August Weather21°C (71°F)105 mm (4.1 inches)76%very high
September Weather19°C (66°F)113 mm (4.4 inches)77%very high
October Weather13°C (55°F)127 mm (5.0 inches)82%high
November Weather4°C (40°F)109 mm (4.3 inches)89%moderate
December Weather1°C (34°F)106 mm (4.2 inches)86%low

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