This March, Boston will experience weather whiplash as temperatures fluctuate between spring warmth and winter chills, with frequent rain showers and even snowflakes keeping the city on edge.
If you were hoping for a smooth transition into spring, think again. Forecasters predict that March will be a month of rapid change, wet streets, and unpredictable weather.
Mild days in the 40s and 50s°F will quickly give way to freezing nights, so Bostonians should dress in layers and be prepared for anything.
Rain will be a frequent visitor throughout the month, and with colder air lingering at times, some of that moisture may still turn into snow—particularly in the first half of the month. If you thought winter was over, Mother Nature might have other plans.
Why Is Boston’s Weather So Unpredictable This March?
March is a transitional month in Boston, as the city gradually shakes off winter’s icy grip while spring struggles to fully emerge. This year, a strong jet stream is causing frequent temperature swings, so some days will feel like spring, while others may feel like winter hasn’t yet let go.
Moisture from the Atlantic and Gulf of Mexico is driving above-average precipitation, resulting in frequent rain showers. If a cold front arrives at the right time, the rain may briefly turn to wet snow, especially in the first half of the month.
By mid-to-late March, however, we should have longer stretches of mild, springlike weather—but not before a few more cold, damp days remind us that winter does not go away quietly in New England.
Boston’s Day-by-Day March Weather Breakdown
Tuesday, March 11 – A Temporary Spring Tease
- Mild and breezy, with highs around 48°F (9°C).
- Cooler by evening, with lows dipping to 34°F (1°C).
- A great day for outdoor activities—but don’t get used to it!
Wednesday, March 12 – Rain Returns
- Clouds increase, with rain showers developing in the afternoon.
- Highs near 46°F (8°C), with overnight lows around 36°F (2°C).
- Wet roads could make for a messy evening commute.
Thursday, March 13 – Could We See Some Snow?
- Rain may briefly mix with snow early in the morning.
- Temperatures hold steady in the mid-40s°F (7°C), with chilly winds.
- No major accumulations expected, but be prepared for a damp, raw day.
Friday, March 14 – Cloudy, With More Rain Possible
- Another round of rain showers likely.
- Highs near 49°F (9°C), with a breezy feel.
- Pack an umbrella, as rain chances remain high.
Saturday, March 15 – A Brief Dry Break
- Partly sunny, with highs climbing to 51°F (11°C).
- Cool overnight, with temps near 38°F (3°C).
- The best day of the week to get outside!
Sunday, March 16 – More Rain Moves In
- Clouds return, with a 60% chance of rain in the afternoon.
- Highs in the upper 40s°F (8-9°C).
- Another soggy end to the weekend.
Monday, March 17 – A Chilly Start to the New Week
- Partly cloudy and breezy, with highs around 45°F (7°C).
- A brisk day, but at least it’s drier than the weekend
What This Means for You
- Prepare for Frequent Rain Showers – March is looking wetter than usual, so keep an umbrella handy for those surprise downpours.
- Winter May Not Be Done Yet – With cold air still lingering, there’s a slight chance of snow early in the month, though nothing major is expected.
- Dress for the Weather Swings – Mornings may be cold, afternoons mild, and evenings chilly again, so layer up and be ready for quick changes.
- Slippery Roads & Slow Commutes – Wet roads could make driving hazardous, especially during early morning and evening commutes.
How to Stay Comfortable in Boston’s Unpredictable March Weather
- Layer Your Clothing – Mornings can be cold, afternoons mild, and nights chilly again, so dress accordingly.
- Keep an Umbrella and Rain Gear Ready – Rain will be a frequent visitor this month, so waterproof jackets and shoes will be lifesavers.
- Watch for Icy Spots on Roads & Sidewalks – Even if it doesn’t snow, morning frost and rain could make sidewalks and streets slick.
- Stay Updated on Weather Alerts – With quick-changing conditions, checking the forecast daily is a must.
Boston’s March weather is a true mix of seasons, with spring attempting to take control but winter refusing to give up. Expect frequent rain, chilly days, and possibly even a brief snowfall before warmer weather sets in for good. If you enjoy the classic New England unpredictability, this month will keep you guessing.
