Boston weather in August
Long-run climate averages for Boston, MA in August, plus what the forecast models say for the days ahead.
In August, Boston averages 79°F by day and 63°F at night. The wettest month is usually January.
August in Boston averages a daytime high of 79°F and an overnight low of 63°F, which reads as warm for this part of the world. It is among the three warmest months of the year here. Across the whole year Boston sees roughly 51 inches of precipitation.
Climate averages tell you what to pack. They do not tell you what next Tuesday looks like — for that, see the live Boston forecast with every model compared and how much they currently agree.
Boston weather by month
what to expect in Boston through the yearHere is Boston's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Boston by season.