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May Weather in Amherst, United States

Last updated: June 24, 2025

In Amherst, United States, the average temperature in May hovers around 14°C (57°F). While you might experience chilly minimums of -2°C (30°F), there can also be warm spells with maximums reaching 34°C (94°F). Expect about 110 mm (4.3 in) of precipitation spread over 14 days, and don't forget to account for an average humidity of 77%—a perfect recipe for a diverse climate!

May Temperature in Amherst

In May in Amherst, the average temperature is 14°C (57°F). Maximum temperatures can reach 34°C (94°F), while the minimum can drop as low as -2°C (30°F). This diverse range of temperatures makes Amherst an ideal destination for travelers seeking both mild and exhilarating weather experiences.

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 14°C (57°F), with highs reaching up to 34°C (94°F) and lows dropping to around -2°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec181933435768726962483425
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 total precipitation amount is 110 mm (4.3 in) spread over 14 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 110 mm (4.3 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec385162102110113129137981064953
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 77%. With an average temperature of 14°C (57°F), this humidity feels like a heavy blanket wrapping around you, making outdoor exploration feel muggy and leaving you craving the shade while you travel.

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 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%90%87%84%77%75%75%73%78%84%89%87%
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 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 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
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 Weather-8°C (19°F)38 mm (1.5 inches)89%low
February Weather-7°C (19°F)51 mm (2.0 inches)90%moderate
March Weather0°C (33°F)62 mm (2.4 inches)87%moderate
April Weather6°C (43°F)102 mm (4.0 inches)84%very high
May Weather14°C (57°F)110 mm (4.3 inches)77%very high
June Weather20°C (68°F)113 mm (4.5 inches)75%very high
July Weather22°C (72°F)129 mm (5.1 inches)74%very high
August Weather20°C (69°F)137 mm (5.4 inches)73%very high
September Weather17°C (62°F)98 mm (3.8 inches)78%high
October Weather9°C (49°F)106 mm (4.2 inches)84%moderate
November Weather1°C (34°F)49 mm (1.9 inches)89%moderate
December Weather-4°C (25°F)53 mm (2.1 inches)87%low

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