Point Forecast: 2 Miles S Washington-Dulles International Airport VA  38.93N 77.45W (Elev. 299 ft)	Last Update: 10:33 am EST Jan 21, 2025

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Weather Elements Fire Weather Aviation Weather Temperature (°F) Dewpoint (°F) Wind Chill (°F) Surface Wind  ktmphkm/hm/s Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Snow Freezing Rain Sleet Fog Mixing Height  x100ftx100m Haines Index Lightning Activity Level Trans. Wind  ktmphkm/hm/s Vent Rate (x1000 mph-ft) Atmospheric Dispersion Index Low Visibility Occurrence Risk Index Ceiling Height Visibility

48-Hour Period Starting: 10am Tue, Jan 21 202511am Tue, Jan 21 202512pm Tue, Jan 21 20251pm Tue, Jan 21 20252pm Tue, Jan 21 20253pm Tue, Jan 21 20254pm Tue, Jan 21 20255pm Tue, Jan 21 20256pm Tue, Jan 21 20257pm Tue, Jan 21 20258pm Tue, Jan 21 20259pm Tue, Jan 21 202510pm Tue, Jan 21 202511pm Tue, Jan 21 202512am Wed, Jan 22 20251am Wed, Jan 22 20252am Wed, Jan 22 20253am Wed, Jan 22 20254am Wed, Jan 22 20255am Wed, Jan 22 20256am Wed, Jan 22 20257am Wed, Jan 22 20258am Wed, Jan 22 20259am Wed, Jan 22 202510am Wed, Jan 22 202511am Wed, Jan 22 202512pm Wed, Jan 22 20251pm Wed, Jan 22 20252pm Wed, Jan 22 20253pm Wed, Jan 22 20254pm Wed, Jan 22 20255pm Wed, Jan 22 20256pm Wed, Jan 22 20257pm Wed, Jan 22 20258pm Wed, Jan 22 20259pm Wed, Jan 22 202510pm Wed, Jan 22 202511pm Wed, Jan 22 202512am Thu, Jan 23 20251am Thu, Jan 23 20252am Thu, Jan 23 20253am Thu, Jan 23 20254am Thu, Jan 23 20255am Thu, Jan 23 20256am Thu, Jan 23 20257am Thu, Jan 23 20258am Thu, Jan 23 20259am Thu, Jan 23 202510am Thu, Jan 23 202511am Thu, Jan 23 202512pm Thu, Jan 23 20251pm Thu, Jan 23 20252pm Thu, Jan 23 20253pm Thu, Jan 23 20254pm Thu, Jan 23 20255pm Thu, Jan 23 20256pm Thu, Jan 23 20257pm Thu, Jan 23 20258pm Thu, Jan 23 20259pm Thu, Jan 23 202510pm Thu, Jan 23 202511pm Thu, Jan 23 202512am Fri, Jan 24 20251am Fri, Jan 24 20252am Fri, Jan 24 20253am Fri, Jan 24 20254am Fri, Jan 24 20255am Fri, Jan 24 20256am Fri, Jan 24 20257am Fri, Jan 24 20258am Fri, Jan 24 20259am Fri, Jan 24 202510am Fri, Jan 24 202511am Fri, Jan 24 202512pm Fri, Jan 24 20251pm Fri, Jan 24 20252pm Fri, Jan 24 20253pm Fri, Jan 24 20254pm Fri, Jan 24 20255pm Fri, Jan 24 20256pm Fri, Jan 24 20257pm Fri, Jan 24 20258pm Fri, Jan 24 20259pm Fri, Jan 24 202510pm Fri, Jan 24 202511pm Fri, Jan 24 202512am Sat, Jan 25 20251am Sat, Jan 25 20252am Sat, Jan 25 20253am Sat, Jan 25 20254am Sat, Jan 25 20255am Sat, Jan 25 20256am Sat, Jan 25 20257am Sat, Jan 25 20258am Sat, Jan 25 20259am Sat, Jan 25 202510am Sat, Jan 25 202511am Sat, Jan 25 202512pm Sat, Jan 25 20251pm Sat, Jan 25 20252pm Sat, Jan 25 20253pm Sat, Jan 25 20254pm Sat, Jan 25 20255pm Sat, Jan 25 20256pm Sat, Jan 25 20257pm Sat, Jan 25 20258pm Sat, Jan 25 20259pm Sat, Jan 25 2025

Date	01/21														01/22
Hour (EST)	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09
Temperature (°F)	17	18	18	19	20	21	20	21	19	19	17	17	16	15	15	14	13	11	10	9	8	8	7	10
Dewpoint (°F)	-2	0	2	2	3	3	4	5	6	7	8	8	9	8	7	7	5	4	3	2	1	-1	-2	-2
Wind Chill (°F)	8	10	13	14	15	16	20	21	19	14	17	17	16	15	9	8	5	2	-1	-2	-3	-3	-6	-2
Surface Wind (mph)	7	6	3	3	3	3	2	2	2	3	2	2	2	2	3	3	5	6	7	7	7	7	8	8
Wind Dir	NW	NW	NW	NW	NW	SW	SW	SW	NE	NE	N	N	N	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW
Gust
Sky Cover (%)	57	71	86	87	89	91	94	93	91	89	87	84	78	63	46	37	28	18	13	9	6	6	4	4
Precipitation Potential (%)	6	6	6	13	13	13	17	17	17	16	16	16	17	17	3	3	3	3	4	4	4	0	0	0
Relative Humidity (%)	42	44	49	47	47	45	49	49	56	59	67	67	73	73	70	73	70	73	73	72	72	66	66	57
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	SChc	SChc	SChc	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date															01/23
Hour (EST)	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09
Temperature (°F)	12	14	16	17	18	19	19	18	17	16	15	14	14	14	13	13	13	12	12	12	12	13	15	18
Dewpoint (°F)	-3	-3	-3	-2	-2	-1	-1	0	0	1	1	2	2	2	3	3	3	3	3	3	4	5	6	8
Wind Chill (°F)	0	3	6	9	11	14	19	18	17	10	9	8	8	8	7	7	7	6	6	12	12	7	9	11
Surface Wind (mph)	8	8	7	6	5	3	2	1	2	3	3	3	3	3	3	3	3	3	3	2	2	3	3	5
Wind Dir	NW	NW	NW	NW	NW	NW	W	SW	S	SE	SE	SE	SE	S	S	S	S	S	S	S	S	S	S	S
Gust
Sky Cover (%)	5	4	5	11	26	44	56	58	52	44	40	39	40	42	45	49	54	57	57	54	47	37	27	19
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1
Relative Humidity (%)	50	46	42	42	40	40	40	44	46	51	53	58	58	58	63	63	63	66	66	66	70	70	67	64
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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