Current Conditions

Charlestown, Massachusetts

56°F13°C

Partly Cloudy

Wind

NE 11 mph18 km/h

Humidity

79%

Cloud Cover

65%

As of Wednesday, September 23, 2026 at 7:15 AM EDT

Today's Outlook

Day

Partly cloudy and mild, with a high of 62°F17°C and morning low of 56°F13°C. Windy from the NE at 14 to 16 mph23 to 26 km/h. Dry air.

Night

Partly cloudy, with a low around 53°F11°C. Breezy from the NE at 10 to 11 mph16 to 18 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Partly Cloudy	High 62°F17°C	Low 53°F11°C	Precip 0 in0 mm—	Cloud 43%	Wind NE 12 mph20 km/h	Wednesday: Partly cloudy and mild, with a high of 62°F17°C and morning low of 56°F13°C. Windy from the NE at 14 to 16 mph23 to 26 km/h. Dry air. Wednesday Night: Partly cloudy, with a low around 53°F11°C. Breezy from the NE at 10 to 11 mph16 to 18 km/h.
Partly Cloudy	High 62°F17°C	Low 51°F10°C	Precip 0 in0 mm—	Cloud 49%	Wind NE 11 mph18 km/h	Thursday: Partly cloudy and mild, with a high of 62°F17°C and morning low of 53°F12°C. Breezy from the NE at 12 to 14 mph20 to 22 km/h. Dry air. Thursday Night: Mostly cloudy, with a low around 51°F10°C. Breezy from the NE at 10 mph16 km/h.
Light Rain	High 62°F17°C	Low 53°F12°C	Precip 0.19 in4.9 mm56%	Cloud 94%	Wind NNE 15 mph24 km/h	Friday: Overcast and mild, with a high of 62°F17°C and morning low of 56°F13°C. Windy from the NNE at 16 to 17 mph25 to 27 km/h. 37% chance of light rain throughout the day. Dry air. Friday Night: Overcast, with a low around 53°F12°C. Windy from the NNE at 14 to 16 mph22 to 26 km/h. 56% chance of light rain in the evening.
Rain	High 59°F15°C	Low 58°F14°C	Precip 1.19 in30.1 mm94%	Cloud 98%	Wind NNE 19 mph30 km/h	Saturday: Overcast and mild, with a high of 59°F15°C. Windy from the NNE at 19 to 20 mph31 to 32 km/h. 90% chance of rain throughout the day. Saturday Night: Overcast, with a low around 58°F14°C. Windy from the NNE at 19 to 20 mph30 to 32 km/h. 94% chance of rain throughout the night.
Rain	High 61°F16°C	Low 59°F15°C	Precip 1.28 in32.5 mm98%	Cloud 99%	Wind NE 15 mph25 km/h	Sunday: Overcast and mild, with a high of 61°F16°C. Windy from the NE at 16 to 17 mph25 to 28 km/h. 97% chance of rain throughout the day. Sunday Night: Overcast, with a low around 59°F15°C. Windy from the NE at 15 to 19 mph25 to 31 km/h. 98% chance of rain throughout the night.
Rain	High 62°F17°C	Low 59°F15°C	Precip 0.38 in9.6 mm80%	Cloud 94%	Wind NNE 9 mph14 km/h	Monday: Overcast and mild, with a high of 62°F17°C. Breezy from the NNE at 9 mph14 km/h. 73% chance of light rain throughout the day. Monday Night: Overcast, with a low around 59°F15°C. Breezy from the NNE at 9 to 10 mph14 to 16 km/h. 80% chance of rain throughout the night.
Drizzle	High 66°F19°C	Low 58°F14°C	Precip 0.04 in0.9 mm16%	Cloud 80%	Wind NW 5 mph9 km/h	Tuesday: Overcast and mild, with a high of 66°F19°C and morning low of 59°F15°C. Light wind from the NW around 5 mph9 km/h. Tuesday Night: Mostly cloudy, with a low around 58°F14°C. Breezy from the WNW at 5 to 7 mph9 to 11 km/h. 16% chance of drizzle overnight.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 23	62°F17°C	53°F11°C	0 in0 mm· —	43%	Partly Cloudy	NE 12 mph20 km/h
DayPartly cloudy and mild, with a high of 62°F17°C and morning low of 56°F13°C. Windy from the NE at 14 to 16 mph23 to 26 km/h. Dry air. NightPartly cloudy, with a low around 53°F11°C. Breezy from the NE at 10 to 11 mph16 to 18 km/h.
	ThursdaySep 24	62°F17°C	51°F10°C	0 in0 mm· —	49%	Partly Cloudy	NE 11 mph18 km/h
DayPartly cloudy and mild, with a high of 62°F17°C and morning low of 53°F12°C. Breezy from the NE at 12 to 14 mph20 to 22 km/h. Dry air. NightMostly cloudy, with a low around 51°F10°C. Breezy from the NE at 10 mph16 km/h.
	FridaySep 25	62°F17°C	53°F12°C	0.19 in4.9 mm· 56%	94%	Light Rain	NNE 15 mph24 km/h
DayOvercast and mild, with a high of 62°F17°C and morning low of 56°F13°C. Windy from the NNE at 16 to 17 mph25 to 27 km/h. 37% chance of light rain throughout the day. Dry air. NightOvercast, with a low around 53°F12°C. Windy from the NNE at 14 to 16 mph22 to 26 km/h. 56% chance of light rain in the evening.
	SaturdaySep 26	59°F15°C	58°F14°C	1.19 in30.1 mm· 94%	98%	Rain	NNE 19 mph30 km/h
DayOvercast and mild, with a high of 59°F15°C. Windy from the NNE at 19 to 20 mph31 to 32 km/h. 90% chance of rain throughout the day. NightOvercast, with a low around 58°F14°C. Windy from the NNE at 19 to 20 mph30 to 32 km/h. 94% chance of rain throughout the night.
	SundaySep 27	61°F16°C	59°F15°C	1.28 in32.5 mm· 98%	99%	Rain	NE 15 mph25 km/h
DayOvercast and mild, with a high of 61°F16°C. Windy from the NE at 16 to 17 mph25 to 28 km/h. 97% chance of rain throughout the day. NightOvercast, with a low around 59°F15°C. Windy from the NE at 15 to 19 mph25 to 31 km/h. 98% chance of rain throughout the night.
	MondaySep 28	62°F17°C	59°F15°C	0.38 in9.6 mm· 80%	94%	Rain	NNE 9 mph14 km/h
DayOvercast and mild, with a high of 62°F17°C. Breezy from the NNE at 9 mph14 km/h. 73% chance of light rain throughout the day. NightOvercast, with a low around 59°F15°C. Breezy from the NNE at 9 to 10 mph14 to 16 km/h. 80% chance of rain throughout the night.
	TuesdaySep 29	66°F19°C	58°F14°C	0.04 in0.9 mm· 16%	80%	Drizzle	NW 5 mph9 km/h
DayOvercast and mild, with a high of 66°F19°C and morning low of 59°F15°C. Light wind from the NW around 5 mph9 km/h. NightMostly cloudy, with a low around 58°F14°C. Breezy from the WNW at 5 to 7 mph9 to 11 km/h. 16% chance of drizzle overnight.
	WednesdaySep 30	69°F21°C	58°F14°C	0.01 in0.2 mm· 5%	65%	Partly Cloudy	SW 5 mph7 km/h
DayMostly cloudy and warm, with a high of 69°F21°C and morning low of 59°F15°C. Light wind from the S around 4 mph6 km/h. NightMostly cloudy, with a low around 58°F14°C. Light wind from the SW around 5 mph9 km/h.
	ThursdayOct 1	72°F22°C	59°F15°C	0.04 in0.9 mm· 8%	61%	Partly Cloudy	SSW 7 mph12 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 60°F16°C. Breezy from the SSW at 7 to 8 mph11 to 13 km/h. NightMostly cloudy, with a low around 59°F15°C. Breezy from the SSW at 7 to 9 mph12 to 14 km/h.
	FridayOct 2	71°F22°C	61°F16°C	0.18 in4.6 mm· 21%	66%	Showers	SW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 62°F17°C. Breezy from the SW at 8 to 9 mph13 to 14 km/h. 21% chance of showers throughout the day. NightMostly cloudy, with a low around 61°F16°C. Breezy from the SW at 8 mph13 km/h. 21% chance of showers throughout the night.
	SaturdayOct 3	68°F20°C	59°F15°C	0.18 in4.6 mm· 25%	66%	Showers	WSW 8 mph13 km/h
DayMostly cloudy and mild, with a high of 68°F20°C and morning low of 59°F15°C. Breezy from the W at 8 mph13 km/h. 21% chance of showers throughout the day. NightMostly cloudy, with a low around 59°F15°C. Breezy from the WSW at 8 mph12 km/h. 25% chance of showers throughout the night.
	SundayOct 4	66°F19°C	58°F14°C	0.26 in6.5 mm· 30%	71%	Light Rain	SSW 8 mph13 km/h
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 58°F15°C. Breezy from the SSE at 8 mph13 km/h. 29% chance of light rain throughout the day. NightMostly cloudy, with a low around 58°F14°C. Breezy from the SW at 8 mph13 km/h. 30% chance of showers throughout the night.
	MondayOct 5	66°F19°C	57°F14°C	0.17 in4.2 mm· 23%	63%	Showers	W 8 mph13 km/h
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 57°F14°C. Breezy from the W at 8 to 9 mph13 to 14 km/h. 21% chance of showers throughout the day. NightMostly cloudy, with a low around 57°F14°C. Breezy from the W at 8 mph13 km/h. 23% chance of showers throughout the night.
	TuesdayOct 6	65°F18°C	55°F13°C	0.14 in3.6 mm· 19%	53%	Showers	W 8 mph13 km/h
DayMostly cloudy and mild, with a high of 65°F18°C and morning low of 55°F13°C. Breezy from the W at 8 to 9 mph13 to 15 km/h. 19% chance of showers throughout the day. Dry air. NightMostly cloudy, with a low around 55°F13°C. Breezy from the W at 8 mph13 km/h. 16% chance of drizzle throughout the night.
	WednesdayOct 7	63°F17°C	53°F12°C	0.13 in3.3 mm· 17%	53%	Showers	WNW 8 mph14 km/h
DayMostly cloudy and mild, with a high of 63°F17°C and morning low of 53°F12°C. Breezy from the WNW at 9 mph14 km/h. 16% chance of drizzle throughout the day. Dry air. NightPartly cloudy, with a low around 53°F12°C. Breezy from the W at 8 to 9 mph13 to 14 km/h. 17% chance of showers throughout the night.

Nearby Cities

East Boston1 mi2 km Boston1 mi2 km Chelsea2 mi3 km Somerville2 mi3 km Everett2 mi3 km Cambridge2 mi4 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: 42.3779°N, 71.0620°W·Elevation: 13m·Timezone: America/New_York·Population: 20,397