Current Conditions

South Boston, Massachusetts

66°F19°C

Cloudy

Wind

SE 7 mph11 km/h

Humidity

79%

Cloud Cover

92%

As of Wednesday, September 2, 2026 at 8:31 PM EDT

Today's Outlook

Night

Overcast, with a low around 65°F18°C. Breezy from the SE at 7 mph11 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Cloudy	High 71°F22°C	Low 65°F18°C	Precip 0 in0 mm—	Cloud 93%	Wind ESE 7 mph12 km/h	Wednesday: Overcast and warm, with a high of 71°F22°C. Breezy from the ESE at 7 to 8 mph12 to 13 km/h. Wednesday Night: Overcast, with a low around 65°F18°C. Breezy from the SE at 7 mph11 km/h.
Rain	High 76°F24°C	Low 65°F18°C	Precip 0.46 in11.7 mm99%	Cloud 87%	Wind S 6 mph9 km/h	Thursday: Overcast and warm, with a high of 76°F24°C and morning low of 66°F19°C. Breezy from the S at 6 to 7 mph9 to 12 km/h. 99% chance of rain throughout the day. Humid. Thursday Night: Overcast, with a low around 65°F18°C. Breezy from the SSE at 6 to 8 mph10 to 13 km/h. 81% chance of light rain throughout the night.
Drizzle	High 79°F26°C	Low 67°F20°C	Precip 0.04 in0.9 mm18%	Cloud 59%	Wind NW 5 mph7 km/h	Friday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 68°F20°C. Light wind from the NW around 4 mph6 km/h. 18% chance of drizzle throughout the day. Humid. Friday Night: Mostly cloudy, with a low around 67°F20°C. Breezy from the WNW at 5 to 8 mph8 to 13 km/h. 10% chance of drizzle.
Showers	High 71°F22°C	Low 64°F18°C	Precip 0.08 in2.1 mm60%	Cloud 42%	Wind N 9 mph15 km/h	Saturday: Partly cloudy and warm, with a high of 71°F22°C. Breezy from the NNE at 9 to 10 mph15 to 16 km/h. 60% chance of showers throughout the day. Saturday Night: Partly cloudy, with a low around 64°F18°C. Breezy from the N at 9 to 10 mph14 to 16 km/h. 42% chance of drizzle in the evening.
Drizzle	High 70°F21°C	Low 61°F16°C	Precip 0.02 in0.5 mm13%	Cloud 36%	Wind N 9 mph15 km/h	Sunday: Partly cloudy and warm, with a high of 70°F21°C and morning low of 62°F17°C. Breezy from the NNE at 10 to 12 mph16 to 19 km/h. 11% chance of drizzle around midday. Sunday Night: Partly cloudy, with a low around 61°F16°C. Breezy from the N at 8 to 11 mph13 to 17 km/h. 13% chance of drizzle overnight.
Clear	High 75°F24°C	Low 59°F15°C	Precip 0 in0 mm—	Cloud 18%	Wind NW 6 mph10 km/h	Monday: Mostly clear and warm, with a high of 75°F24°C and morning low of 62°F16°C. Breezy from the N at 6 to 7 mph9 to 11 km/h. Monday Night: Partly cloudy, with a low around 59°F15°C. Breezy from the WNW at 7 to 8 mph12 to 13 km/h.
Partly Cloudy	High 77°F25°C	Low 62°F17°C	Precip 0 in0.1 mm3%	Cloud 45%	Wind WNW 6 mph10 km/h	Tuesday: Partly cloudy and warm, with a high of 77°F25°C and morning low of 64°F18°C. Light wind from the NNW around 6 mph9 km/h. Tuesday Night: Partly cloudy, with a low around 62°F17°C. Breezy from the WSW at 7 mph11 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 2	71°F22°C	65°F18°C	0 in0 mm· —	93%	Cloudy	ESE 7 mph12 km/h
DayOvercast and warm, with a high of 71°F22°C. Breezy from the ESE at 7 to 8 mph12 to 13 km/h. NightOvercast, with a low around 65°F18°C. Breezy from the SE at 7 mph11 km/h.
	ThursdaySep 3	76°F24°C	65°F18°C	0.46 in11.7 mm· 99%	87%	Rain	S 6 mph9 km/h
DayOvercast and warm, with a high of 76°F24°C and morning low of 66°F19°C. Breezy from the S at 6 to 7 mph9 to 12 km/h. 99% chance of rain throughout the day. Humid. NightOvercast, with a low around 65°F18°C. Breezy from the SSE at 6 to 8 mph10 to 13 km/h. 81% chance of light rain throughout the night.
	FridaySep 4	79°F26°C	67°F20°C	0.04 in0.9 mm· 18%	59%	Drizzle	NW 5 mph7 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 68°F20°C. Light wind from the NW around 4 mph6 km/h. 18% chance of drizzle throughout the day. Humid. NightMostly cloudy, with a low around 67°F20°C. Breezy from the WNW at 5 to 8 mph8 to 13 km/h. 10% chance of drizzle.
	SaturdaySep 5	71°F22°C	64°F18°C	0.08 in2.1 mm· 60%	42%	Showers	N 9 mph15 km/h
DayPartly cloudy and warm, with a high of 71°F22°C. Breezy from the NNE at 9 to 10 mph15 to 16 km/h. 60% chance of showers throughout the day. NightPartly cloudy, with a low around 64°F18°C. Breezy from the N at 9 to 10 mph14 to 16 km/h. 42% chance of drizzle in the evening.
	SundaySep 6	70°F21°C	61°F16°C	0.02 in0.5 mm· 13%	36%	Drizzle	N 9 mph15 km/h
DayPartly cloudy and warm, with a high of 70°F21°C and morning low of 62°F17°C. Breezy from the NNE at 10 to 12 mph16 to 19 km/h. 11% chance of drizzle around midday. NightPartly cloudy, with a low around 61°F16°C. Breezy from the N at 8 to 11 mph13 to 17 km/h. 13% chance of drizzle overnight.
	MondaySep 7	75°F24°C	59°F15°C	0 in0 mm· —	18%	Clear	NW 6 mph10 km/h
DayMostly clear and warm, with a high of 75°F24°C and morning low of 62°F16°C. Breezy from the N at 6 to 7 mph9 to 11 km/h. NightPartly cloudy, with a low around 59°F15°C. Breezy from the WNW at 7 to 8 mph12 to 13 km/h.
	TuesdaySep 8	77°F25°C	62°F17°C	0 in0.1 mm· 3%	45%	Partly Cloudy	WNW 6 mph10 km/h
DayPartly cloudy and warm, with a high of 77°F25°C and morning low of 64°F18°C. Light wind from the NNW around 6 mph9 km/h. NightPartly cloudy, with a low around 62°F17°C. Breezy from the WSW at 7 mph11 km/h.
	WednesdaySep 9	78°F25°C	63°F17°C	0.02 in0.6 mm· 9%	66%	Partly Cloudy	SSW 9 mph15 km/h
DayMostly cloudy and warm, with a high of 78°F25°C and morning low of 65°F19°C. Breezy from the SSW at 9 to 11 mph14 to 18 km/h. NightMostly cloudy, with a low around 63°F17°C. Breezy from the SW at 10 to 13 mph15 to 20 km/h.
	ThursdaySep 10	83°F28°C	72°F22°C	0.09 in2.3 mm· 20%	61%	Drizzle	WSW 11 mph18 km/h
DayMostly cloudy and warm, with a high of 83°F28°C and morning low of 73°F23°C. Breezy from the WSW at 11 mph17 km/h. 15% chance of drizzle throughout the day. Humid. NightMostly cloudy, with a low around 72°F22°C. Breezy from the WSW at 11 to 13 mph18 to 20 km/h. 20% chance of drizzle throughout the night.
	FridaySep 11	75°F24°C	65°F18°C	0.09 in2.2 mm· 18%	44%	Showers	NW 9 mph14 km/h
DayPartly cloudy and warm, with a high of 75°F24°C and morning low of 67°F20°C. Breezy from the NW at 9 mph14 km/h. 14% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F18°C. Breezy from the WNW at 9 to 10 mph14 to 16 km/h. 18% chance of showers throughout the night.
	SaturdaySep 12	73°F23°C	62°F17°C	0.08 in2 mm· 12%	49%	Drizzle	SW 8 mph12 km/h
DayMostly cloudy and warm, with a high of 73°F23°C and morning low of 63°F17°C. Breezy from the SW at 8 mph12 km/h. 12% chance of drizzle throughout the day. NightPartly cloudy, with a low around 62°F17°C. Breezy from the SW at 8 mph13 km/h. 11% chance of drizzle throughout the night.
	SundaySep 13	76°F24°C	63°F17°C	0.09 in2.2 mm· 14%	53%	Drizzle	SW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 76°F24°C and morning low of 65°F18°C. Breezy from the SW at 8 to 9 mph13 to 15 km/h. 14% chance of drizzle throughout the day. NightMostly cloudy, with a low around 63°F17°C. Breezy from the SW at 8 to 9 mph14 to 14 km/h. 12% chance of drizzle throughout the night.
	MondaySep 14	76°F24°C	65°F18°C	0.09 in2.4 mm· 19%	51%	Drizzle	WSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 76°F24°C and morning low of 66°F19°C. Breezy from the WSW at 8 to 9 mph13 to 14 km/h. 16% chance of drizzle throughout the day. NightMostly cloudy, with a low around 65°F18°C. Breezy from the WSW at 8 to 9 mph13 to 14 km/h. 19% chance of drizzle throughout the night.
	TuesdaySep 15	75°F24°C	64°F18°C	0.09 in2.2 mm· 15%	52%	Drizzle	WSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 66°F19°C. Breezy from the WSW at 8 to 9 mph13 to 14 km/h. 15% chance of drizzle throughout the day. NightPartly cloudy, with a low around 64°F18°C. Breezy from the WSW at 8 mph13 km/h. 12% chance of drizzle throughout the night.
	WednesdaySep 16	75°F24°C	63°F17°C	0.1 in2.5 mm· 13%	47%	Showers	WSW 8 mph13 km/h
DayPartly cloudy and warm, with a high of 75°F24°C and morning low of 64°F18°C. Breezy from the WSW at 8 mph12 km/h. 13% chance of showers throughout the day. NightPartly cloudy, with a low around 63°F17°C. Breezy from the WSW at 8 mph13 km/h. 11% chance of drizzle throughout the night.

Nearby Cities

Boston2 mi3 km Roxbury Crossing2 mi3 km Back Bay2 mi4 km Fenway/Kenmore3 mi4 km Dorchester3 mi5 km East Boston3 mi5 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 42.3334°N, 71.0495°W·Elevation: 14m·Timezone: America/New_York·Population: 571,281