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The weather in Boston in January is very cold with temperatures between -5°C and 1°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Boston during the month of January. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Boston is going to experience quite a number of days of snow during January. It’s the perfect time to build snowmen, drink hot cocoa, and have a snowball fight. Just remember to wear a warm scarf and a pair of mittens!
Our weather forecast can give you a great sense of what weather to expect in Boston in January 2025.
If you’re planning to visit Boston in the near future, we highly recommend that you review the 14 day weather forecast for Boston before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 1° / -5° | 6 | 15 | 10 | 119 mm | Awful | Boston in January |
| February | 2° / -4° | 6 | 12 | 10 | 131 mm | Awful | Boston in February |
| March | 7° / 0° | 7 | 15 | 8 | 149 mm | Awful | Boston in March |
| April | 13° / 5° | 8 | 20 | 2 | 133 mm | Awful | Boston in April |
| May | 20° / 10° | 7 | 24 | 0 | 100 mm | Ok | Boston in May |
| June | 24° / 15° | 7 | 23 | 0 | 120 mm | Good | Boston in June |
| July | 28° / 19° | 7 | 24 | 0 | 119 mm | Good | Boston in July |
| August | 28° / 19° | 4 | 27 | 0 | 99 mm | Perfect | Boston in August |
| September | 24° / 15° | 4 | 26 | 0 | 79 mm | Perfect | Boston in September |
| October | 17° / 10° | 6 | 25 | 0 | 134 mm | Good | Boston in October |
| November | 10° / 4° | 6 | 22 | 2 | 111 mm | Bad | Boston in November |
| December | 5° / -1° | 7 | 17 | 7 | 143 mm | Awful | Boston in December |