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May Weather in Amherst, United States

Last updated: June 24, 2025

In May, the average temperature in Amherst, United States hovers around 19°C (67°F), creating a mild and inviting atmosphere. However, temperatures can vary significantly, with a minimum of 1°C (34°F) and a peak of 34°C (94°F). Visitors should also anticipate 112 mm (4.4 in) of precipitation spread across about 11 days, resulting in an average humidity of 82%. Whether you're exploring the outdoors or enjoying local spots, be prepared for a blend of comfortable warmth and occasional rain!

May Temperature in Amherst

In May in Amherst, average temperature is 19°C (67°F). Maximum can reach 34°C (94°F), and minimum can be as low as 1°C (34°F). Be prepared for a wide range of temperatures if you're traveling during this time, and pack accordingly to enjoy your stay.

May Weather in Amherst: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Amherst, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Amherst, May typically has an average temperature of 19°C (67°F), with highs reaching up to 34°C (94°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec384349586774807772624742
Data source: Temperature data for Amherst 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.

May Precipitation in Amherst

In Amherst in May, the precipitation amount is 112 mm (4.4 in) that occurs over the course of 11 days.

May Precipitation Trends in Amherst

The chart displays monthly precipitation patterns in Amherst, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Amherst, May typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec701086912611294558910211275105
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Amherst

In Amherst in May humidity is 82%. With an average temperature of 19°C (67°F), this humidity feels like a heavy blanket wrapping around you, making each step feel sluggish and the air thick as you explore the sights.

May Average Humidity in Amherst

This chart illustrates the average monthly humidity levels in Amherst, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Amherst is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%84%82%83%83%79%77%75%81%87%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Amherst

In Amherst in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Amherst.

Maximum UV Index Levels in Amherst for May

The chart shows the monthly maximum UV Index (UVI) for Amherst in May, 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 May, the maximum UV index in Amherst typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3689101110109753
Data source: Amherst May 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 May Weather in Amherst Compares to Other Months

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

This table compares monthly weather conditions in Amherst, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)70 mm (2.8 inches)84%moderate
February Weather6°C (44°F)108 mm (4.2 inches)84%high
March Weather9°C (49°F)69 mm (2.7 inches)84%very high
April Weather14°C (58°F)126 mm (5.0 inches)82%very high
May Weather19°C (67°F)112 mm (4.4 inches)82%very high
June Weather23°C (74°F)94 mm (3.7 inches)83%extreme
July Weather27°C (80°F)55 mm (2.2 inches)79%very high
August Weather25°C (77°F)89 mm (3.5 inches)77%very high
September Weather22°C (72°F)102 mm (4.0 inches)75%very high
October Weather17°C (62°F)112 mm (4.4 inches)81%high
November Weather8°C (47°F)75 mm (3.0 inches)87%moderate
December Weather5°C (42°F)105 mm (4.1 inches)85%moderate

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