Current Conditions

St. Charles, Maryland

91°F33°C
Partly Cloudy

Wind

WNW 6 mph10 km/h

Humidity

43%

Cloud Cover

70%

As of Thursday, August 13, 2026 at 12:49 PM EDT

Today's Outlook

Day

Partly cloudy and hot, with a high of 93°F34°C and morning low of 77°F25°C. Breezy from the NW at 6 to 7 mph9 to 11 km/h. Humid.

Night

Mostly cloudy, with a low around 81°F27°C. Light wind from the ESE around 3 mph5 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Partly CloudyHigh 93°F34°CLow 77°F25°CPrecip 0 in0 mmCloud 58%Wind NW 5 mph8 km/hThursday: Partly cloudy and hot, with a high of 93°F34°C and morning low of 77°F25°C. Breezy from the NW at 6 to 7 mph9 to 11 km/h. Humid. Thursday Night: Mostly cloudy, with a low around 81°F27°C. Light wind from the ESE around 3 mph5 km/h.
Light RainHigh 88°F31°CFeels 91°F33°CLow 77°F25°CPrecip 0.06 in1.4 mm33%Cloud 84%Wind N 4 mph6 km/hFriday: Overcast and hot, with a high of 88°F31°C and morning low of 79°F26°C. Light wind from the NNE around 4 mph6 km/h. 33% chance of light rain in the afternoon. Humid. Friday Night: Mostly cloudy, with a low around 77°F25°C. Light wind from the N around 3 mph5 km/h. 14% chance of drizzle in the evening.
DrizzleHigh 86°F30°CFeels 90°F32°CLow 75°F24°CPrecip 0.09 in2.3 mm23%Cloud 76%Wind ESE 4 mph7 km/hSaturday: Overcast and hot, with a high of 86°F30°C and morning low of 77°F25°C. Light wind from the ESE around 4 mph6 km/h. 23% chance of drizzle throughout the day. Humid. Saturday Night: Mostly cloudy, with a low around 75°F24°C. Light wind from the ESE around 4 mph7 km/h. 17% chance of drizzle throughout the night.
Light RainHigh 85°F30°CFeels 94°F34°CLow 76°F24°CPrecip 0.44 in11.2 mm68%Cloud 86%Wind S 6 mph10 km/hSunday: Overcast and warm, with a high of 85°F30°C and morning low of 77°F25°C — feels like 93°F34°C. Breezy from the S at 7 mph11 km/h. 68% chance of light rain throughout the day. Heavy, humid air. Sunday Night: Overcast, with a low around 76°F24°C. Light wind from the S around 6 mph9 km/h. 64% chance of light rain throughout the night.
ShowersHigh 91°F33°CFeels 99°F37°CLow 77°F25°CPrecip 0.14 in3.6 mm40%Cloud 62%Wind WNW 6 mph9 km/hMonday: Mostly cloudy and hot, with a high of 91°F33°C and morning low of 78°F26°C — feels like 99°F37°C. Breezy from the WNW at 6 to 7 mph10 to 11 km/h. 40% chance of showers throughout the day. Heat risk in the afternoon. Monday Night: Mostly cloudy, with a low around 77°F25°C. Light wind from the W around 5 mph9 km/h. 34% chance of showers throughout the night.
ClearHigh 88°F31°CLow 75°F24°CPrecip 0.01 in0.2 mm4%Cloud 31%Wind NNW 5 mph9 km/hTuesday: Partly cloudy and hot, with a high of 88°F31°C and morning low of 76°F25°C. Light wind from the NNW around 5 mph9 km/h. Humid. Tuesday Night: Partly cloudy, with a low around 75°F24°C. Breezy from the NNW at 5 to 7 mph8 to 11 km/h.
DrizzleHigh 90°F32°CFeels 93°F34°CLow 72°F22°CPrecip 0.02 in0.6 mm15%Cloud 33%Wind S 5 mph7 km/hWednesday: Partly cloudy and hot, with a high of 90°F32°C and morning low of 74°F24°C. Light wind from the SSW around 4 mph7 km/h. 15% chance of drizzle. Humid. Wednesday Night: Partly cloudy, with a low around 72°F22°C. Light wind from the S around 5 mph8 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdayAug 1393°F34°C77°F25°C0 in0 mm· —58%Partly CloudyNW 5 mph8 km/h
FridayAug 1488°F31°C
Feels 91°F33°C
77°F25°C0.06 in1.4 mm· 33%84%Light RainN 4 mph6 km/h
SaturdayAug 1586°F30°C
Feels 90°F32°C
75°F24°C0.09 in2.3 mm· 23%76%DrizzleESE 4 mph7 km/h
SundayAug 1685°F30°C
Feels 94°F34°C
76°F24°C0.44 in11.2 mm· 68%86%Light RainS 6 mph10 km/h
MondayAug 1791°F33°C
Feels 99°F37°C
77°F25°C0.14 in3.6 mm· 40%62%ShowersWNW 6 mph9 km/h
TuesdayAug 1888°F31°C75°F24°C0.01 in0.2 mm· 4%31%ClearNNW 5 mph9 km/h
WednesdayAug 1990°F32°C
Feels 93°F34°C
72°F22°C0.02 in0.6 mm· 15%33%DrizzleS 5 mph7 km/h
ThursdayAug 2091°F33°C
Feels 96°F36°C
77°F25°C0.1 in2.6 mm· 33%61%ShowersSW 6 mph9 km/h
FridayAug 2186°F30°C74°F23°C0.07 in1.8 mm· 21%52%DrizzleNNW 5 mph8 km/h
SaturdayAug 2285°F30°C72°F22°C0.12 in3 mm· 23%56%ShowersNNE 5 mph8 km/h
SundayAug 2386°F30°C72°F22°C0.12 in3 mm· 23%53%ShowersW 5 mph8 km/h
MondayAug 2486°F30°C71°F22°C0.07 in1.8 mm· 12%43%DrizzleNW 5 mph8 km/h
TuesdayAug 2588°F31°C71°F22°C0.04 in1 mm· 9%40%ClearWSW 5 mph8 km/h
WednesdayAug 2687°F31°C72°F22°C0.07 in1.9 mm· 14%42%DrizzleWSW 5 mph9 km/h
ThursdayAug 2786°F30°C72°F22°C0.06 in1.6 mm· 15%47%DrizzleNNW 5 mph9 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.

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

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/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=11.5Find 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: 38.6073°N, 76.9248°W·Elevation: 63m·Timezone: America/New_York·Population: 33,379