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Lowell (MA) Weather and Climate: A Comprehensive Guide

Lowell experiences great temperature shifts. The city's weather can transition from warm days to very cold weather. It also has a relatively rain/snowy climate with high levels of precipitation. Let’s explore the climate details in depth to provide you with a complete overview.

Average maximum day and minimum night temperature

The climate in Lowell is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 29°C in July to a very cold 2°C in February.

Nighttime temperatures can drop, with average lows reaching -9°C in February. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Lowell has a notably wet climate with abundant precipitation, recording 1287 mm of rain/snowfall per year. The wettest period in Lowell occurs in October, which receives around 133 mm of precipitation. During the driest month, September, Lowell experiences moderate rainfall, totaling approximately 88 mm. The consistent precipitation levels throughout the year contribute to a relatively stable climate.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

In Lowell, summer days are longer and more sunny, with daily sunshine hours peaking at 10.0 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.7 hours per average day. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Boston, the United States of America (37 KM, 23 Miles).

Daily hours of sunshine

Data from: Boston, the United States of America (37 KM, 23 Miles).

Forecast for Lowell (MA)

Sun   Dec 22
-6°C | -13°C
NW 5 m/s
clear and no rain

clear and no rain

Mon   Dec 23
-3°C | -15°C
S 3 m/s
partly cloudy and no rain

partly cloudy and no rain

Tue   Dec 24
1°C | -6°C
N 2 m/s
3.1 mm
broken clouds and snow

broken clouds and snow

The best time of year to visit Lowell in the United States of America

During the months of May, June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is summer in Lowell?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Lowell?
    July has an average maximum temperature of 29°C and is the warmest month of the year.
  • Which is the coldest month in Lowell?
    The coldest month is February with an average maximum temperature of 2°C.
  • Which is the wettest month in Lowell?
    October tops the wettest month list with 133 mm of rainfall.
  • Which is the driest month in Lowell?
    September is the driest month with 88 mm of precipitation.
  • Which is the sunniest month in Lowell?
    May is the sunniest month with an average of 301 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.