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April Weather in Lambertville, United States

Last updated: June 24, 2025

In Lambertville, United States, the average temperature in April hovers around 9°C (49°F). While you may experience chilly lows of -6°C (21°F), don't be surprised by the occasional warm spell reaching up to 29°C (85°F). With an average precipitation of 89 mm (3.5 in) spread over 13 days, and humidity levels soaring at 87%, be prepared for a mix of weather that adds a unique charm to your visit!

April Temperature in Lambertville

In April in Lambertville, the average temperature is 9°C (49°F). Maximum temperatures can reach 29°C (85°F), while minimums can drop as low as -6°C (21°F). Be prepared for a wide range of temperatures when planning your travel to Lambertville during this month.

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

The chart illustrates April temperature patterns in Lambertville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lambertville, April typically has an average temperature of 9°C (49°F), with highs reaching up to 29°C (85°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec282939486171767367564034
Data source: Temperature data for Lambertville 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 Lambertville

In Lambertville in April, the precipitation amount is 89 mm (3.5 in) distributed over 13 days.

April Precipitation Trends in Lambertville

The chart displays monthly precipitation patterns in Lambertville, 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 Lambertville, April typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec67688189136971078459938254
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Lambertville

In Lambertville 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 Lambertville

This chart illustrates the average monthly humidity levels in Lambertville, 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 Lambertville is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Lambertville

In Lambertville 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 Lambertville.

Maximum UV Index Levels in Lambertville for April

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

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

This table compares monthly weather conditions in Lambertville, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)67 mm (2.6 inches)88%moderate
February Weather-2°C (29°F)68 mm (2.7 inches)87%moderate
March Weather4°C (39°F)81 mm (3.2 inches)87%high
April Weather9°C (49°F)89 mm (3.5 inches)87%very high
May Weather16°C (61°F)136 mm (5.4 inches)81%very high
June Weather22°C (71°F)97 mm (3.8 inches)82%very high
July Weather24°C (76°F)107 mm (4.2 inches)81%very high
August Weather23°C (74°F)84 mm (3.3 inches)78%very high
September Weather20°C (68°F)59 mm (2.3 inches)78%very high
October Weather13°C (56°F)93 mm (3.7 inches)82%high
November Weather5°C (41°F)82 mm (3.2 inches)89%moderate
December Weather1°C (34°F)54 mm (2.1 inches)86%low

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