Weather Averages for Washington, DC

Weather Averages for
Washington, DC

Latitude: 38°51'N, Longitude: 77°2'W, Elevation: 3.0 m, Distance: 2.64 km

	Unit	Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average temperature over 51 years	°C	14	2	3	7	13	18	23	26	25	21	15	9	3
Average high temperature over 51 years	°C	19	6	7	12	19	24	28	31	30	26	20	14	8
Average low temperature over 51 years	°C	9	-2	-1	2	7	13	18	21	20	16	10	4	0
Highest recorded temperature over 51 years	°C	40	26	27	31	35	37	38	40	39	38	34	30	23
Lowest recorded temperature over 51 years	°C	-20	-20	-15	-10	-4	1	8	12	9	3	-1	-8	-16
Average number of rainy days over 52 years	days	112	10	9	11	10	11	9	10	9	8	7	9	9
Average number of days above 27°C over 51 years	days	35	-	-	-	-	2	7	13	9	3	-	-	-
Average precipitation over 51 years	cm	99.8	7.1	6.6	8.6	7.1	9.9	8.4	10.2	10.4	8.4	7.6	7.6	7.9
Average dew point over 54 years	°C	7	-5	-4	0	4	11	16	18	18	15	8	2	-2
Average number of days above 17°C over 51 years	days	177	-	1	4	11	24	29	31	31	27	15	4	1
Most recorded rainfall over 51 years	cm	146.1	18.0	14.5	21.3	17.5	27.2	29.2	32.8	36.3	31.5	21.8	17.0	16.5
Least recorded rainfall over 51 years	cm	68.3	0.8	1.0	1.8	-	2.0	2.3	2.3	1.3	0.5	-	0.8	0.5
Average number of days with thunderstorms over 50 years	days	31	-	-	1	3	5	6	7	5	2	1	1	-
Average number of days with fog over 50 years	days	130	11	10	10	9	12	10	10	11	12	13	11	11
Average morning relative humidity over 54 years	%	75	71	70	70	70	75	76	77	81	82	81	76	72
Average evening relative humidity over 54 years	%	52	55	50	47	46	51	52	53	54	55	53	53	55
Average wind speed over 54 years	km/h	16.1	20.9	20.9	20.9	14.5	14.5	14.5	14.5	14.5	14.5	14.5	14.5	20.9
Average number of days below -1.5°C over 51 years	days	71	21	18	9	1	-	-	-	-	-	-	5	16
Average snowfall over 50 years	cm	42.2	13.5	13.5	5.3	-	-	-	-	-	-	-	2.0	7.9
Average number of clear days over 45 years	days	97	8	7	7	7	7	8	7	9	10	11	8	8
Heating degree days over 30 years	days	4047	942	770	552	264	60	-	-	-	14	195	456	794
Cooling degree days over 30 years	days	1549	-	-	-	9	104	318	465	419	203	31	-	-
Average possibility of sunshine over 45 years	%	56	47	51	55	56	58	64	62	62	61	59	51	46
Average number of cloudy days over 45 years	days	163	16	14	15	14	14	11	12	12	12	12	14	16
Average number of partly cloudy days over 45 years	days	105	7	7	9	9	10	11	12	10	8	8	8	7
Average number of days below -12.5°C over 51 years	days	2	1	-	-	-	-	-	-	-	-	-	-	-

Check weather averages for nearby locations (some locations might offer more data):

Latitude: 38°54'N, Longitude: 76°59'W, Elevation: 15.2 m, Distance: 1.24 km

Latitude: 38°54'N, Longitude: 77°6'W, Elevation: 20.1 m, Distance: 2.78 km

Latitude: 38°58'N, Longitude: 76°57'W, Elevation: 27.1 m, Distance: 3.32 km

Latitude: 38°56'N, Longitude: 77°7'W, Elevation: 44.5 m, Distance: 3.45 km

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Weather Averages Washington, DC