United States Boston Weather in March — Climate Guide
March in Boston is mod
March is mod for Boston.
March is Boston's St. Patrick's Day month — Boston's Irish-American population (over 20% Irish ancestry, the highest of any major US city) makes St. Patrick's Day Boston Parade (Sunday closest to March 17, Southie/South Boston neighborhood) one of the largest St. Patrick's parades in the US (~1 million spectators).
Weather transition — wind chill still 0 to -5°C / 23-32°F at month start, climbing to 5-10°C / 41-50°F by month end. Last winter snowfalls possible. Daylight Saving Time begins (2nd Sunday March) — evening daylight extends 1 hour.
Travel score
Boston March Weather Stats
Avg High
8°C
Avg Low
-1°C
Rainy Days
12
95mm total
Sunshine
7h
Daily avg
Humidity
62%
moderate
UV Index
4
Moderate
Wind
16 km/h
Gusts 40
Sea Temp
4°C
freezing
Snow Days
3
Monthly avg
Crowds
Quiet
At attractions
March Sunrise & Sunset
Expect about 3 snow days this month. Bring slip-resistant shoes and warm gear.
Air Quality
PM2.5
8 μg/m³
PM10
19 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
5°C
Nighttime
-4°C
Humidity and wind affect how the actual temperature feels.
Wind
16 km/h
Max gust 40 km/h
Activities Recommended for March
March Travel Pros & Cons
Pros
- St. Patrick's Day Boston Parade (Irish-American canonical celebration)
- Spring transition weather
- Daylight Saving Time evening extension
- Hotel pricing still shoulder-season
Cons
- Wind chill 0 to -5°C early month
- Variable rain (12 rainy days)
- Last winter snowfalls possible
- Pre-Marathon hotel pricing climbing late month
March Events & Festivals
- St. Patrick's Day Boston Parade (Sun closest to March 17)
- Boston Spring Convention
- Daylight Saving Time begins (2nd Sun March)
- Spring equinox (March 20)
Boston in March — Full Picture
March is Boston's St. Patrick's Day month — Boston's Irish-American population (over 20% Irish ancestry, the highest of any major US city) makes St. Patrick's Day Boston Parade (Sunday closest to March 17, Southie/South Boston neighborhood) one of the largest St. Patrick's parades in the US (~1 million spectators).
Weather transition — wind chill still 0 to -5°C / 23-32°F at month start, climbing to 5-10°C / 41-50°F by month end. Last winter snowfalls possible. Daylight Saving Time begins (2nd Sunday March) — evening daylight extends 1 hour.
Fenway Park reopens for Red Sox spring training broadcast (game days at Tampa Florida). Boston Marathon pre-event vibe begins — pre-Marathon training runners visible on Charles River Esplanade + Newton.
The smart March move: target the last 2 weeks (post-St. Patrick's, pre-Easter) for spring-shoulder pricing window. Boston Marathon pre-booking surge starts late March for April hotels — booking 6 months ahead is the canonical move.
What to Wear & What to Pack
Late-winter layered — heavy jacket + sweater + waterproof boots. Wind chill still 0 to -5°C / 23-32°F. Spring transition March 17 St. Patrick's Day + March 20 spring equinox.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current14°C
4.3°C
11.7/mo
Summer (Jun·Jul·Aug)
26.7°C
17.3°C
9.7/mo
Autumn (Sep·Oct·Nov)
17°C
8.3°C
9.7/mo
Winter (Dec·Jan·Feb)
3.7°C
-4.7°C
11/mo
Boston Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 2° | -6° | 11d·90mm | 5h | 65% | 2 | Quiet | Low season | |
| 4° | -5° | 10d·80mm | 6h | 64% | 3 | Quiet | Low season | |
| 8° | -1° | 12d·95mm | 7h | 62% | 4 | Quiet | Low season | |
| 14° | 4° | 12d·95mm | 8h | 60% | 5 | Very busy | Peak | |
| May (Best) | 20° | 10° | 11d·90mm | 9h | 60% | 7 | Very busy | Peak |
| June (Best) | 25° | 15° | 11d·90mm | 10h | 64% | 9 | Busy | Peak |
| July (Best) | 28° | 19° | 9d·85mm | 11h | 67% | 10 | Very busy | Peak |
| August (Best) | 27° | 18° | 9d·90mm | 10h | 70% | 9 | Very busy | Peak |
| September (Best) | 23° | 14° | 9d·90mm | 9h | 65% | 7 | Very busy | Peak |
| October (Best) | 17° | 8° | 9d·95mm | 7h | 65% | 5 | Very busy | Peak |
| 11° | 3° | 11d·95mm | 5h | 65% | 3 | Busy | Peak | |
| 5° | -3° | 12d·100mm | 5h | 65% | 2 | Very busy | Peak |
View Other Months
Boston March Hotel Picks
Frequently Asked Questions
Is March a good time to visit Boston?
Boston in March is mod. Tourist crowds are quiet and flight/hotel prices are low season.
What's the average temperature in Boston in March?
Boston March averages a high of 8°C and a low of -1°C.
Does it rain much in Boston in March?
Boston March averages 95mm of rainfall over about 12 rainy days.
What should I wear in Boston in March?
Late-winter layered — heavy jacket + sweater + waterproof boots. Wind chill still 0 to -5°C / 23-32°F. Spring transition March 17 St. Patrick's Day + March 20 spring equinox.
What time are sunrise and sunset in Boston in March?
Boston March sunrise is 06:10 and sunset is 17:35, with 11h 25m of daylight.
What's the air quality like in Boston in March?
Boston March air quality (AQI) averages 32, rated Good. PM2.5 averages 8μg/m³.
What activities are recommended in Boston in March?
In March, Boston is great for St. Patrick's Day Boston Parade Southie, Boston Common spring walking, Indoor museums.
Is March peak season in Boston?
Boston March crowds are quiet and prices are low season. You can travel relatively comfortably without long queues.
Best Months to Visit Boston
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.