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May Weather in Lowell, United States

Last updated: June 24, 2025

In May, the average temperature in Lowell, United States hovers around 19°C (67°F), with lows dipping to 3°C (38°F) and highs reaching up to 32°C (91°F). Expect considerable moisture, as the region sees about 175 mm (6.9 in) of precipitation over 13 days, paired with an average humidity level of 83%.

May Temperature in Lowell

In May in Lowell, the average temperature is 19°C (67°F). Maximum temperatures can reach 32°C (91°F), while the minimum can drop as low as 3°C (38°F). Be prepared for a range of temperatures to ensure a comfortable travel experience.

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

The chart illustrates May temperature patterns in Lowell, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lowell, May typically has an average temperature of 19°C (67°F), with highs reaching up to 32°C (91°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec374051576776797773604843
Data source: Temperature data for Lowell 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 Lowell

In Lowell in May, the precipitation amount is 175 mm (6.9 in) during a span of 13 days.

May Precipitation Trends in Lowell

The chart displays monthly precipitation patterns in Lowell, 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 Lowell, May typically receives around 175 mm (6.9 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec84961451771759496151701606869
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Lowell

In Lowell in May humidity is 83%. With an average temperature of 19°C (67°F), this humidity feels like a warm, tropical blanket wrapping around you, making traveling feel a bit sluggish and sticky, yet still inviting as long as you stay hydrated and take breaks in the shade.

May Average Humidity in Lowell

This chart illustrates the average monthly humidity levels in Lowell, 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 Lowell is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%78%76%78%83%83%78%68%64%70%83%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Lowell

In Lowell 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 Lowell.

Maximum UV Index Levels in Lowell for May

The chart shows the monthly maximum UV Index (UVI) for Lowell 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 Lowell typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Lowell 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 Lowell Compares to Other Months

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

This table compares monthly weather conditions in Lowell, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)84 mm (3.3 inches)81%moderate
February Weather5°C (40°F)96 mm (3.8 inches)78%high
March Weather11°C (52°F)145 mm (5.7 inches)76%high
April Weather14°C (57°F)177 mm (7.0 inches)78%very high
May Weather19°C (67°F)175 mm (6.9 inches)83%very high
June Weather24°C (76°F)94 mm (3.7 inches)83%extreme
July Weather26°C (79°F)96 mm (3.8 inches)78%extreme
August Weather25°C (77°F)151 mm (5.9 inches)68%very high
September Weather23°C (73°F)70 mm (2.8 inches)64%very high
October Weather15°C (60°F)160 mm (6.3 inches)70%high
November Weather9°C (48°F)68 mm (2.7 inches)83%moderate
December Weather6°C (43°F)69 mm (2.7 inches)87%moderate

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