Current Conditions

Charlestown, Massachusetts

76°F25°C
Partly Cloudy

Wind

S 5 mph9 km/h

Humidity

59%

Cloud Cover

53%

As of Wednesday, August 12, 2026 at 6:54 PM EDT

Today's Outlook

Night

Mostly cloudy, with a low around 73°F23°C. Light wind from the SSW around 5 mph9 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Partly CloudyHigh 83°F28°CLow 73°F23°CPrecip 0 in0 mmCloud 60%Wind SSW 4 mph7 km/hWednesday: Mostly cloudy and warm, with a high of 83°F28°C. Light wind from the SW around 4 mph6 km/h. Wednesday Night: Mostly cloudy, with a low around 73°F23°C. Light wind from the SSW around 5 mph9 km/h.
ShowersHigh 81°F27°CLow 69°F20°CPrecip 0.17 in4.4 mm66%Cloud 47%Wind W 5 mph9 km/hThursday: Partly cloudy and warm, with a high of 81°F27°C and morning low of 69°F21°C. Light wind from the W around 5 mph8 km/h. 66% chance of showers throughout the day. Thursday Night: Mostly cloudy, with a low around 69°F20°C. Breezy from the W at 6 to 7 mph9 to 11 km/h. 66% chance of showers throughout the night.
DrizzleHigh 81°F27°CLow 66°F19°CPrecip 0.02 in0.4 mm21%Cloud 18%Wind NW 7 mph11 km/hFriday: Partly cloudy and warm, with a high of 81°F27°C and morning low of 70°F21°C. Breezy from the NW at 7 to 8 mph12 to 12 km/h. 21% chance of drizzle in the afternoon. Friday Night: Mostly clear, with a low around 66°F19°C. Breezy from the NW at 7 mph11 km/h.
ClearHigh 79°F26°CLow 63°F17°CPrecip 0 in0.1 mm3%Cloud 40%Wind NNW 5 mph9 km/hSaturday: Partly cloudy and warm, with a high of 79°F26°C and morning low of 67°F20°C. Light wind from the NNW around 5 mph8 km/h. Saturday Night: Partly cloudy, with a low around 63°F17°C. Light wind from the WNW around 6 mph9 km/h.
Light RainHigh 79°F26°CLow 63°F17°CPrecip 0.18 in4.6 mm60%Cloud 70%Wind S 7 mph12 km/hSunday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 67°F20°C. Breezy from the S at 7 to 10 mph11 to 17 km/h. 32% chance of light rain in the afternoon. Sunday Night: Mostly cloudy, with a low around 63°F17°C. Breezy from the SSW at 8 to 11 mph12 to 17 km/h. 60% chance of showers in the evening.
RainHigh 76°F25°CLow 70°F21°CPrecip 0.48 in12.2 mm73%Cloud 79%Wind NNW 9 mph14 km/hMonday: Overcast and warm, with a high of 76°F25°C and morning low of 71°F21°C. Breezy from the N at 9 mph14 km/h. 57% chance of light rain throughout the day. Humid. Monday Night: Mostly cloudy, with a low around 70°F21°C. Breezy from the S at 9 to 10 mph14 to 17 km/h. 73% chance of rain throughout the night.
DrizzleHigh 77°F25°CLow 66°F19°CPrecip 0.02 in0.6 mm12%Cloud 50%Wind NNE 6 mph10 km/hTuesday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 68°F20°C. Breezy from the NNE at 6 to 7 mph10 to 11 km/h. 11% chance of drizzle. Tuesday Night: Partly cloudy, with a low around 66°F19°C. Breezy from the NNW at 6 to 7 mph10 to 12 km/h. 12% chance of drizzle overnight.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdayAug 1283°F28°C73°F23°C0 in0 mm· —60%Partly CloudySSW 4 mph7 km/h
ThursdayAug 1381°F27°C69°F20°C0.17 in4.4 mm· 66%47%ShowersW 5 mph9 km/h
FridayAug 1481°F27°C66°F19°C0.02 in0.4 mm· 21%18%DrizzleNW 7 mph11 km/h
SaturdayAug 1579°F26°C63°F17°C0 in0.1 mm· 3%40%ClearNNW 5 mph9 km/h
SundayAug 1679°F26°C63°F17°C0.18 in4.6 mm· 60%70%Light RainS 7 mph12 km/h
MondayAug 1776°F25°C70°F21°C0.48 in12.2 mm· 73%79%RainNNW 9 mph14 km/h
TuesdayAug 1877°F25°C66°F19°C0.02 in0.6 mm· 12%50%DrizzleNNE 6 mph10 km/h
WednesdayAug 1981°F27°C65°F18°C0.01 in0.2 mm· 8%51%Partly CloudySW 6 mph10 km/h
ThursdayAug 2081°F27°C69°F20°C0.15 in3.8 mm· 31%62%ShowersSW 8 mph14 km/h
FridayAug 2180°F26°C68°F20°C0.12 in3 mm· 18%52%DrizzleW 8 mph13 km/h
SaturdayAug 2279°F26°C67°F19°C0.11 in2.9 mm· 16%51%ShowersW 7 mph12 km/h
SundayAug 2378°F26°C66°F19°C0.11 in2.9 mm· 19%50%ShowersW 7 mph12 km/h
MondayAug 2478°F26°C65°F18°C0.05 in1.3 mm· 13%45%DrizzleW 7 mph11 km/h
TuesdayAug 2578°F26°C64°F18°C0.1 in2.5 mm· 22%46%ShowersWSW 7 mph12 km/h
WednesdayAug 2677°F25°C64°F18°C0.14 in3.5 mm· 24%49%ShowersW 8 mph12 km/h

Nearby Cities

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.

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Coordinates: 42.3779°N, 71.0620°W·Elevation: 13m·Timezone: America/New_York·Population: 20,397