Marlborough (MA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Marlborough.
Climate overview of Marlborough
Marlborough, Massachusetts, United States of America, sees big temperature differences between seasons, with July peaking at 29°C (84°F) and January dropping to 2°C (36°F).
The city has a wet climate, receiving around 1221 mm (48 in) of rain/snowfall per year. Despite the high annual total, it has warm summers and very cold winters. June is the wettest month. Sunshine peaks in May, when the city sees around 10.0 hours of sunshine per day.
Marlborough Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Marlborough - and find the best time to visit.
Monthly Temperature in Marlborough
Visitors to Marlborough can expect significant temperature changes throughout the year. On average, daytime temperatures range from a comfortable 29°C (84°F) in July to a very cold 2°C (36°F) in January.
Nighttime temperatures range from 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 Marlborough
Marlborough is known for its substantial rain/snowfall, with annual precipitation reaching 1221 mm (48 in). The wettest period in Marlborough occurs in June, which receives around 127 mm (5 in) of precipitation. During the driest month, January, Marlborough experiences moderate snowfall, totaling 85 mm (3.3 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Marlborough 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 Marlborough
In Marlborough, 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
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Marlborough by Month
The relative humidity is high throughout the year in Marlborough.
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 Marlborough
Each month is rated for comfortable sightseeing weather — mild temperatures and low rainfall. Tap a month for its full averages; your ideal time may differ for a beach or winter trip (see below).
- Best overall: May and September
- Warmest weather: July and August
- Most sunshine: May and July
- Fewest rainy days: February, March, September and November
- Climate seasons: warm summers and very cold winters
- Best for winter weather: January, with freezing nights around -9°C (16°F).
Frequently asked questions about the climate in Marlborough
What is the best time to visit Marlborough?
May and September typically offer the most optimal weather in Marlborough. In contrast, January, February, March and December tend to have less optimal conditions. Marlborough has warm summers and very cold winters.
What temperatures can I expect in Marlborough?
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 Marlborough get?
Annual rainfall is around 1221 mm (48 in). June is the wettest month with 127 mm (5 in), while January is the driest with 85 mm (3.3 in).
How sunny is Marlborough?
Marlborough 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, Marlborough enjoys abundant sunshine.
Marlborough 3-Day Forecast
Marlborough (MA) 3-Day Forecast
Marlborough on the map
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