Charlestown, MD Weather

Charlestown, MD climate is warm during summer when temperatures tend to be in the 70's and very cold during winter when temperatures tend to be in the 30's.

The warmest month of the year is July with an average maximum temperature of 87.60 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 21.90 degrees Fahrenheit.

Temperature variations between night and day tend to be moderate during summer with a difference that can reach 23 degrees Fahrenheit, and fairly limited during winter with an average difference of 19 degrees Fahrenheit.

The annual average precipitation at Charlestown is 48.09 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is September with an average rainfall of 4.92 Inches.

Weather Data

Current Conditions

(Updated: 5:50 AM EST TUE NOV 24 2009)

Light Rain, 48°F	Humidity: 94%	Dewpoint: 46°F
	Wind Speed: NE 4.6 MPH (4 KT)	Heat Index: 48°F
	Barometer: 30.14 in.	Wind Chill: 46°F

Weather Forecast

(Generated: 4:45 AM EST TUE NOV 24 2009)

	Hi: 55°F	Today: Cloudy. A chance of rain and drizzle this morning. Highs in the mid 50s. Northeast winds 5 to 10 mph. Chance of rain 50 percent.
	Lo: 41°F
	Hi: 59°F	Wednesday: Cloudy with a 40 percent chance of showers. Highs in the upper 50s. East winds around 5 mph.
	Lo: 41°F
	Hi: 59°F	Thanksgiving day: Cloudy with a 40 percent chance of showers. Highs in the upper 50s. Northwest winds around 5 mph.
	Lo: 40°F
	Hi: 49°F	Friday: Rain likely. Highs in the upper 40s. Chance of rain 70 percent.
	Lo: 35°F
	Hi: 49°F	Saturday: Partly sunny and breezy. Highs in the upper 40s.
	Lo: 31°F
	Hi: 51°F	Sunday: Mostly sunny. Highs in the lower 50s.
	Lo: 35°F

Moon, Sunrise and Sunset

	Moon Phase: Waxing Gibbous Moon	Civil Twilight: 6:28 AM EST	Sunrise: 6:57 AM EST
		Sunset: 4:43 PM EST	Civil Twilight: 5:12 PM EST

Normal Climate

Normal Temperatures

(CONOWINGO DAM Weather station, 11.64 miles from Charlestown)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max °F	39.9	43.5	53.0	64.2	74.2	82.8	87.6	86.0	78.8	67.3	55.4	44.7	64.8
Mean °F	30.9	33.7	42.4	52.4	62.6	71.5	76.2	74.8	67.7	55.6	44.9	35.8	54.0
Min °F	21.9	23.8	31.7	40.5	51.0	60.1	64.7	63.6	56.5	43.9	34.4	26.8	43.2

Normal Precipitation