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April Weather in Hillsborough, United States

Last updated: June 24, 2025

In April, the average temperature in Hillsborough, United States hovers around 12°C (55°F), with temperatures ranging from a chilly 7°C (45°F) to a warm 25°C (78°F). Expect about 34 mm (1.3 in) of precipitation spread over 5 days, contributing to an average humidity of 79%. Stay prepared for a mix of cool and warm days!

April Temperature in Hillsborough

In April in Hillsborough, the average temperature is 12°C (55°F). The maximum can reach 25°C (78°F), and the minimum can be as low as 7°C (45°F). Visitors traveling during this time can expect mild weather, making it an ideal season for outdoor activities and exploration.

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

The chart illustrates April temperature patterns in Hillsborough, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hillsborough, April typically has an average temperature of 12°C (55°F), with highs reaching up to 25°C (78°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec525253545558586062595653
Data source: Temperature data for Hillsborough 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 Hillsborough

In Hillsborough in April, the precipitation amount is 34 mm (1.3 in) over the course of 5 days.

April Precipitation Trends in Hillsborough

The chart displays monthly precipitation patterns in Hillsborough, 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 Hillsborough, April typically receives around 34 mm (1.3 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec1021017834224333274892
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Hillsborough

In Hillsborough in April, humidity is 79%. With an average temperature of 12°C (55°F), this humidity feels like a damp chill that can make traveling uncomfortable; it can leave you feeling slightly clammy and require you to dress in layers to stay warm while navigating the thick, moisture-laden air.

April Average Humidity in Hillsborough

This chart illustrates the average monthly humidity levels in Hillsborough, 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 Hillsborough is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%82%82%79%83%84%87%87%86%80%79%79%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Hillsborough

In Hillsborough 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 Hillsborough.

Maximum UV Index Levels in Hillsborough for April

The chart shows the monthly maximum UV Index (UVI) for Hillsborough 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 Hillsborough typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589101111109743
Data source: Hillsborough 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 Hillsborough Compares to Other Months

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

This table compares monthly weather conditions in Hillsborough, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (53°F)102 mm (4.0 inches)85%moderate
February Weather11°C (53°F)101 mm (4.0 inches)82%moderate
March Weather12°C (53°F)77 mm (3.0 inches)82%very high
April Weather12°C (55°F)34 mm (1.3 inches)79%very high
May Weather13°C (56°F)22 mm (0.9 inches)83%very high
June Weather15°C (58°F)4 mm (0.2 inches)84%extreme
July Weather15°C (59°F)3 mm (0.1 inches)87%extreme
August Weather16°C (61°F)3 mm (0.1 inches)87%very high
September Weather16°C (62°F)3 mm (0.1 inches)86%very high
October Weather15°C (60°F)27 mm (1.1 inches)80%high
November Weather13°C (56°F)48 mm (1.9 inches)79%moderate
December Weather12°C (53°F)92 mm (3.6 inches)79%moderate

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