UV Index
UV Index
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Today's UV index in Wellesley, United States 
will be up to 6.8, indicating a high level of sun exposure for the average person. Check the annual sun radiation in the city and our tips for today to make sure you're safe in the sun.
With Wellesley's UV index reaching 6.8, protect your skin from harm by staying in shade, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours between 10 a.m. and 4 p.m., when UV rays are strongest.
Wellesley, Massachusetts experiences moderate UV index levels, averaging 4-6 during the summer months and 2-4 during the winter months, which is typical for the Northeastern United States.
Wellesley has a humid continental climate, with four distinct seasons. Winters are cold and snowy, with average temperatures ranging from 24°F to 38°F (-4°C to 3°C). Summers are warm and humid, with average temperatures between 63°F to 82°F (17°C to 28°C).
Compared to other regions, Wellesley's climate is similar to other areas in the Northeast, with slightly colder winters and warmer summers than neighboring cities in New England. In contrast, neighboring countries such as Canada experience colder winters, while coastal areas in the Mid-Atlantic region have milder winters and hotter summers.