Will it rain in
Boston today?
Live hourly rain forecast and run verdict for Boston, Massachusetts, US.
Running in Boston means mastering New England's brutal winters and glorious but brief autumns. Whether it's a nor'easter blanketing the Charles River Esplanade, a sticky summer morning through the Emerald Necklace, or a perfect fall run along the Freedom Trail, knowing whether to head out before you lace up matters. RainOrRun checks live conditions in Boston right now and gives you an instant verdict — plus the best hourly window if the weather's on the fence. We'll also recommend the right gear for whatever Boston's New England weather is throwing at you today.
What to wear
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How often does it rain in Boston?
Boston records around 1192mm of rain a year, spread across about 127 days — roughly 35% of all days, or 11 days in an average month. That puts Boston mid-pack: rain interrupts roughly one run in three, so it pays to check the hourly forecast before a long run, but you will not be running in waterproofs week after week.
The wettest month is December, averaging 120mm across about 11 rainy days. The driest is August, with 74mm over roughly 11 days. Average lows in February drop to -5.4°C, cold enough that gloves, a headband and a thermal base layer make a real difference on early runs. At the other end, July averages 28.5°C highs — hot enough that early morning and evening are the sensible windows, and hydration matters more than waterproofing.
Those are ten-year averages, not a forecast. What actually matters on the day is the next twelve hours — which is what the live verdict and hourly strip at the top of this page are for.
| Month | Rainfall | Rainy days | Avg high | Avg low |
|---|---|---|---|---|
| January | 106mm | 10 | 2.9°C | -5.1°C |
| February | 88mm | 10 | 4.4°C | -5.4°C |
| March | 109mm | 12 | 7.6°C | -1.9°C |
| April | 107mm | 12 | 13.1°C | 3.8°C |
| May | 79mm | 11 | 19.7°C | 9.8°C |
| June | 87mm | 11 | 24.9°C | 15°C |
| July | 110mm | 12 | 28.5°C | 19.1°C |
| August | 74mm | 11 | 27.7°C | 18.6°C |
| September | 109mm | 9 | 23.4°C | 14.9°C |
| October | 119mm | 10 | 17.3°C | 9°C |
| November | 84mm | 8 | 10.8°C | 2.4°C |
| December | 120mm | 11 | 5.7°C | -2°C |
Historical data: Open-Meteo archive, 2015–2024. A “rainy day” means at least 1mm of precipitation.
Running in Boston: common questions
Will it rain in Boston today?
The forecast card at the top of this page shows Boston's rain probability for the current hour, plus an hour-by-hour breakdown for the rest of the day, using live Open-Meteo data. Historically, Boston sees rain on about 127 days a year, so on any given day there is roughly a 35% chance of some rain falling.
Is it a good day to run in Boston?
RainOrRun scores the live Boston forecast on rain probability, rainfall amount, temperature, wind speed and severe weather, then returns a single verdict: Go, Maybe, or Don't Bother. A Maybe means conditions are borderline and it is worth picking your window rather than skipping the run.
What is the best time to run in Boston today?
The hourly strip above highlights the best single window of the day for Boston — the hour combining the lowest rain probability with the most comfortable temperature. You can also check up to eight days ahead using the date picker if you are planning a long run or a race.
What should I wear running in Boston today?
The gear section on this page updates with the live Boston forecast: a waterproof jacket and peaked cap when rain probability goes above 40%, a thermal base layer and gloves below 8 degrees Celsius, and a high-vis vest when wind or low light make you harder to see.
What is the wettest month in Boston?
December is the wettest month in Boston, averaging 120mm of rain across about 11 rainy days. August is the driest, with around 74mm over roughly 11 days. Figures are ten-year averages covering 2015 to 2024.
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