nomadseason

April Weather in Grafton, United States

Last updated: June 24, 2025

In April, the average temperature in Grafton, United States is a mild 12°C (55°F). Temperatures can fluctuate significantly, with a minimum of -5°C (23°F) and a maximum soaring to 30°C (86°F). Be prepared for some precipitation, as the area experiences an average of 119 mm (4.7 in) over 11 days. With an average humidity of 80%, expect a comfortable yet humid atmosphere throughout the month.

April Temperature in Grafton

In April in Grafton, the average temperature is 12°C (55°F). Maximum temperatures can reach up to 30°C (86°F), while minimums can drop as low as -5°C (23°F). This range makes Grafton an ideal destination for travelers seeking both warm days and cool evenings.

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

The chart illustrates April temperature patterns in Grafton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grafton, April typically has an average temperature of 12°C (55°F), with highs reaching up to 30°C (86°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec313446546776797672584438
Data source: Temperature data for Grafton 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 Grafton

In Grafton in April, the total precipitation amount is 119 mm (4.7 in), which occurs over the course of 11 days.

April Precipitation Trends in Grafton

The chart displays monthly precipitation patterns in Grafton, 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 Grafton, April typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec70771311191479394123661006651
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

April Humidity in Grafton

In Grafton in April, humidity is 80%. With an average temperature of 12°C (55°F), this humidity feels like a damp blanket wrapping around you, making it essential to choose breathable clothing and stay hydrated while exploring the area.

April Average Humidity in Grafton

This chart illustrates the average monthly humidity levels in Grafton, 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 Grafton is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Grafton

In Grafton 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 Grafton.

Maximum UV Index Levels in Grafton for April

The chart shows the monthly maximum UV Index (UVI) for Grafton 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 Grafton typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111199643
Data source: Grafton 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 Grafton Compares to Other Months

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

This table compares monthly weather conditions in Grafton, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)70 mm (2.8 inches)82%moderate
February Weather1°C (34°F)77 mm (3.0 inches)80%moderate
March Weather8°C (46°F)131 mm (5.1 inches)80%high
April Weather12°C (55°F)119 mm (4.7 inches)80%very high
May Weather19°C (67°F)147 mm (5.8 inches)82%very high
June Weather25°C (76°F)93 mm (3.6 inches)83%extreme
July Weather26°C (79°F)94 mm (3.7 inches)81%extreme
August Weather24°C (76°F)123 mm (4.9 inches)80%very high
September Weather22°C (72°F)66 mm (2.6 inches)76%very high
October Weather15°C (59°F)100 mm (3.9 inches)76%high
November Weather6°C (44°F)66 mm (2.6 inches)85%moderate
December Weather3°C (38°F)51 mm (2.0 inches)86%moderate

Compare Grafton's Climate with Cities Worldwide