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April Weather in Mercer, United States

Last updated: June 24, 2025

In Mercer, United States, the average temperature in April hovers around 5°C (42°F). Expect a chilly range where the minimum can plummet to -13°C (10°F), while the maximum can reach a comfortable 23°C (74°F). Precipitation averages about 127 mm (5.0 in) spread across 12 days, contributing to a notable average humidity of 84%. Stay prepared for a typically damp and cool month!

April Temperature in Mercer

In April in Mercer, the average temperature is 5°C (42°F), with maximums reaching 23°C (74°F) and minimums dipping as low as -13°C (10°F). Be sure to pack layers to accommodate the wide temperature range while exploring the area.

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 5°C (42°F), with highs reaching up to 23°C (74°F) and lows dropping to around -13°C (10°F).
JanFebMarAprMayJunJulAugSepOctNovDec192129415464696860493424
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 precipitation amount is 127 mm (5.0 in) occurring over the course of 12 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 127 mm (5.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec85847212787831218269129112116
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 84%. With an average temperature of 5°C (42°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier while traveling.

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 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%85%
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 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 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 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910987532
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-7°C (19°F)85 mm (3.3 inches)91%low
February Weather-6°C (22°F)84 mm (3.3 inches)89%moderate
March Weather-2°C (29°F)72 mm (2.8 inches)85%moderate
April Weather5°C (42°F)127 mm (5.0 inches)84%very high
May Weather12°C (54°F)87 mm (3.4 inches)78%very high
June Weather18°C (64°F)83 mm (3.3 inches)72%very high
July Weather20°C (69°F)120 mm (4.7 inches)75%very high
August Weather20°C (68°F)82 mm (3.2 inches)74%very high
September Weather16°C (61°F)69 mm (2.7 inches)77%high
October Weather9°C (49°F)129 mm (5.1 inches)85%moderate
November Weather1°C (35°F)112 mm (4.4 inches)86%moderate
December Weather-5°C (24°F)116 mm (4.6 inches)85%low

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