Westford (MA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Westford.
Climate overview of Westford
Westford, Massachusetts, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 29°C (84°F) in July, while winters cool to 2°C (36°F) in January.
With around 1241 mm (49 in) of annual rain/snowfall, Westford has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has warm summers and very cold winters. The wettest month is June. The most sunshine falls in May, with an average of 10.0 hours of daily sunshine.
Westford Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Westford - and find the best time to visit.
Monthly Temperature in Westford
Depending on the time of the year, temperatures range from comfortable to very cold in Westford. Average daytime temperatures reach a comfortable 29°C (84°F) in July. In January, the coolest month of the year, temperatures drop to a very cold 2°C (36°F).
At night, temperatures range from around 17°C (63°F) in July to -9°C (16°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Westford
Westford has a relatively rain/snowy climate with high precipitation levels, averaging 1241 mm (49 in) of rain/snowfall annually. Despite minor fluctuations, Westford enjoys fairly consistent precipitation throughout the year. In June, you can expect around 125 mm (4.9 in) of precipitation, while in January, Westford receives about 86 mm (3.4 in). For more details, please visit our Westford Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Westford
Westford can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 10.0 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 4.7 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Westford by Month
The relative humidity is high throughout the year in Westford.
The city experiences its highest humidity in August, reaching 72%. In February, the humidity drops to its lowest level at 62%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Westford
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, July and September
- Warmest weather: July and August
- Most sunshine: May and July
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -9°C (16°F).
Frequently asked questions about the climate in Westford
What is the best time to visit Westford?
May, July and September typically offer the most optimal weather in Westford. In contrast, January, February, March and December tend to have less optimal conditions. Westford has warm summers and very cold winters.
What temperatures can I expect in Westford?
Daytime highs range from 2°C (36°F) in January to 29°C (84°F) in July. Nighttime lows range from -9°C (16°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Westford get?
Annual rainfall is around 1241 mm (49 in). June is the wettest month with 125 mm (4.9 in), while January is the driest with 86 mm (3.4 in).
How sunny is Westford?
Westford receives around 2,665 hours of sunshine per year. May is the sunniest month with 301 hours, while December is the cloudiest with just 141 hours. Overall, Westford enjoys abundant sunshine.
Westford 3-Day Forecast
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