South Boston, MA Weather Forecast
Local 7-day forecast
Chance Rain Showers then Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for South Boston, MA in one place.
A chance of rain showers before 8am. Partly sunny, with a high near 55. Northwest wind around 15 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.
Local Weather Overview
This forecast page for South Boston, MA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 16, 2026 2:08 AM EDT.
The active forecast window currently covers Oct 17 to Oct 22, 2026 for South Boston, MA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 17 to Oct 22, 2026
- Latest sync
- Oct 16, 2026 2:08 AM EDT
- Forecast office
- BOX
- Source
- NOAA / NWS
Daily Outlook
This Week in South Boston
Tuesday looks like the warmest upcoming period in South Boston at 63 degrees F.
Saturday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Saturday at about 15 mph NW.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Oct 16, 2026 2:08 AM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- BOX
- Radar station
- KBOX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Areas of frost after midnight. Mostly clear, with a low around 31. North wind 5 to 14 mph.
Areas of frost before 9am. Sunny, with a high near 55. Northwest wind around 6 mph.
Clear, with a low around 37. Southwest wind around 5 mph.
Sunny, with a high near 61. Southwest wind 3 to 9 mph.
Mostly clear, with a low around 41. West wind 3 to 7 mph.
Mostly sunny, with a high near 63. North wind around 7 mph.
Partly cloudy, with a low around 43. North wind around 5 mph.
Sunny, with a high near 61. North wind 6 to 9 mph.
Mostly clear, with a low around 40. Northeast wind 3 to 7 mph.
Mostly sunny, with a high near 59. Northeast wind 5 to 8 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Oct 17
|
Chance Rain Showers then Partly Sunny
|
55°F |
15 mph
NW
|
|
Saturday Night
Oct 17
|
Mostly Clear then Areas Of Frost
|
31°F |
5 to 14 mph
N
|
|
Sunday
Oct 18
|
Areas Of Frost then Sunny
|
55°F |
6 mph
NW
|
|
Sunday Night
Oct 18
|
Clear
|
37°F |
5 mph
SW
|
|
Monday
Oct 19
|
Sunny
|
61°F |
3 to 9 mph
SW
|
|
Monday Night
Oct 19
|
Mostly Clear
|
41°F |
3 to 7 mph
W
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
63°F |
7 mph
N
|
|
Tuesday Night
Oct 20
|
Partly Cloudy
|
43°F |
5 mph
N
|
|
Wednesday
Oct 21
|
Sunny
|
61°F |
6 to 9 mph
N
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
40°F |
3 to 7 mph
NE
|
|
Thursday
Oct 22
|
Mostly Sunny
|
59°F |
5 to 8 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around South Boston.
