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May Weather in Lowell, United States

Last updated: June 24, 2025

In Lowell, United States, the average temperature in May hovers around 22°C (72°F), making it a pleasant time to visit. However, be prepared for a range; temperatures can dip as low as 5°C (41°F) or soar to a sweltering 36°C (97°F). While you're out exploring, expect an average humidity of 83% and a precipitation amount of 103 mm (4.1 in) over about 11 days during the month. Stay hydrated and enjoy your time!

May Temperature in Lowell

In May in Lowell, the average temperature is 22°C (72°F). The maximum can reach 36°C (97°F) and the minimum can be as low as 5°C (41°F). Be prepared for warm days and cooler nights when traveling to Lowell this month.

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 22°C (72°F), with highs reaching up to 36°C (97°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec444954627177817975655147
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 103 mm (4.1 in) spread over 11 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 103 mm (4.1 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec88112821011036788851159188118
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 average temperature 22°C (72°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities challenging and prompting travelers to seek shade or frequent stops for hydration.

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.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%82%83%82%80%74%75%79%87%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.
JanFebMarAprMayJunJulAugSepOctNovDec46810101111109853
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 Weather6°C (44°F)88 mm (3.5 inches)86%moderate
February Weather10°C (49°F)112 mm (4.4 inches)85%high
March Weather12°C (54°F)81 mm (3.2 inches)84%very high
April Weather17°C (63°F)101 mm (4.0 inches)82%very high
May Weather22°C (72°F)103 mm (4.1 inches)83%very high
June Weather25°C (78°F)67 mm (2.6 inches)82%extreme
July Weather27°C (82°F)88 mm (3.5 inches)80%extreme
August Weather26°C (79°F)85 mm (3.3 inches)74%very high
September Weather24°C (75°F)115 mm (4.5 inches)75%very high
October Weather18°C (65°F)91 mm (3.6 inches)79%very high
November Weather11°C (51°F)88 mm (3.5 inches)87%moderate
December Weather8°C (47°F)118 mm (4.7 inches)87%moderate

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