Earth Science 7-Washington D.C., United States

Washington D.C., USA

References

[1]

[2]

Latitude/Longitude

38.53 N/ 77.02 W

Elevation

0–409 ft (0–125 m)

Major Body of Water

Potomac River

Koppen Classification

Washington, DC is a Cfb on the Koppen Classification System.

Factors that Affect the Climate

Washington DC is near the Atlantic Ocean, so it has less extreme temperatures than inland cities. Also, it is at the 38 degree latitude, so it is near the middle latitudes.

Average Temperature

Washington DC Temperature	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Avg. Temperature	1.45	3.05	8.35	13.6	19.05	24.15	26.55	25.8	21.8	14.35	9.8	4.1	14.4
Avg. Max Temperature	5.7	7.7	13.6	19.2	24.5	29.2	31.3	30.5	26.7	20.6	14.6	8.3	19.3
Avg. Min Temperature	-2.8	-1.6	3.1	8.0	13.6	19.1	21.8	21.1	16.9	10.1	5.0	-0.1	9.5

Geology

Plate Boundaries

Washington, D.C., is closest to the fault between the North American and Eurasian plates, but it is not very close, about 1538.5 miles from the mid-Atlantic ridge.

Rocks

Washington DC is near 3 rivers and is near the ocean. Sediments carried by the river may be under the city. Also, since there is no vocanic activity or plate boundaries near DC, it is safe to assume that Washington DC is over a layer of sedimentary rocks.

Washington DC Precipitation	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Precipitation (inches)	2.8	2.6	3.5	2.8	3.7	3.1	3.8	4.1	3.3	3.1	3.0	3.1	39.0