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Point Forecast: 3 Miles NW Chantilly VA  38.91N 77.45W (Elev. 262 ft)	Last Update: 4:34 pm EDT Apr 19, 2021

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Weather Elements Weather/Precipitation Fire 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

48-Hour Period Starting: 7pm Mon, Apr 19 20218pm Mon, Apr 19 20219pm Mon, Apr 19 202110pm Mon, Apr 19 202111pm Mon, Apr 19 202112am Tue, Apr 20 20211am Tue, Apr 20 20212am Tue, Apr 20 20213am Tue, Apr 20 20214am Tue, Apr 20 20215am Tue, Apr 20 20216am Tue, Apr 20 20217am Tue, Apr 20 20218am Tue, Apr 20 20219am Tue, Apr 20 202110am Tue, Apr 20 202111am Tue, Apr 20 202112pm Tue, Apr 20 20211pm Tue, Apr 20 20212pm Tue, Apr 20 20213pm Tue, Apr 20 20214pm Tue, Apr 20 20215pm Tue, Apr 20 20216pm Tue, Apr 20 20217pm Tue, Apr 20 20218pm Tue, Apr 20 20219pm Tue, Apr 20 202110pm Tue, Apr 20 202111pm Tue, Apr 20 202112am Wed, Apr 21 20211am Wed, Apr 21 20212am Wed, Apr 21 20213am Wed, Apr 21 20214am Wed, Apr 21 20215am Wed, Apr 21 20216am Wed, Apr 21 20217am Wed, Apr 21 20218am Wed, Apr 21 20219am Wed, Apr 21 202110am Wed, Apr 21 202111am Wed, Apr 21 202112pm Wed, Apr 21 20211pm Wed, Apr 21 20212pm Wed, Apr 21 20213pm Wed, Apr 21 20214pm Wed, Apr 21 20215pm Wed, Apr 21 20216pm Wed, Apr 21 20217pm Wed, Apr 21 20218pm Wed, Apr 21 20219pm Wed, Apr 21 202110pm Wed, Apr 21 202111pm Wed, Apr 21 202112am Thu, Apr 22 20211am Thu, Apr 22 20212am Thu, Apr 22 20213am Thu, Apr 22 20214am Thu, Apr 22 20215am Thu, Apr 22 20216am Thu, Apr 22 20217am Thu, Apr 22 20218am Thu, Apr 22 20219am Thu, Apr 22 202110am Thu, Apr 22 202111am Thu, Apr 22 202112pm Thu, Apr 22 20211pm Thu, Apr 22 20212pm Thu, Apr 22 20213pm Thu, Apr 22 20214pm Thu, Apr 22 20215pm Thu, Apr 22 20216pm Thu, Apr 22 20217pm Thu, Apr 22 20218pm Thu, Apr 22 20219pm Thu, Apr 22 202110pm Thu, Apr 22 202111pm Thu, Apr 22 202112am Fri, Apr 23 20211am Fri, Apr 23 20212am Fri, Apr 23 20213am Fri, Apr 23 20214am Fri, Apr 23 20215am Fri, Apr 23 20216am Fri, Apr 23 20217am Fri, Apr 23 20218am Fri, Apr 23 20219am Fri, Apr 23 202110am Fri, Apr 23 202111am Fri, Apr 23 202112pm Fri, Apr 23 20211pm Fri, Apr 23 20212pm Fri, Apr 23 20213pm Fri, Apr 23 20214pm Fri, Apr 23 20215pm Fri, Apr 23 20216pm Fri, Apr 23 20217pm Fri, Apr 23 20218pm Fri, Apr 23 20219pm Fri, Apr 23 202110pm Fri, Apr 23 202111pm Fri, Apr 23 202112am Sat, Apr 24 20211am Sat, Apr 24 20212am Sat, Apr 24 20213am Sat, Apr 24 20214am Sat, Apr 24 20215am Sat, Apr 24 20216am Sat, Apr 24 2021

Date	04/19					04/20
Hour (EDT)	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18
Temperature (°F)	65	60	57	55	52	50	49	47	46	46	45	47	47	51	56	63	67	69	70	72	72	73	73	71
Dewpoint (°F)	41	42	43	44	44	44	44	44	44	42	42	42	42	43	44	44	44	43	43	42	43	43	43	43
Wind Chill (°F)						47	47	45	44	44	43	45	45
Surface Wind (mph)	8	8	7	7	6	7	6	5	5	5	5	5	5	5	5	6	7	8	8	9	9	9	9	9
Wind Dir	SW	SW	SW	S	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	S	S	S
Gust
Sky Cover (%)	39	19	18	18	17	15	12	10	10	9	8	10	13	15	15	15	15	16	17	18	21	26	28	29
Precipitation Potential (%)	17	11	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	2	3	3	4
Relative Humidity (%)	41	51	59	66	74	80	83	89	93	86	89	83	83	74	64	50	43	39	38	34	35	34	34	36
Rain	SChc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date						04/21
Hour (EDT)	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18
Temperature (°F)	69	66	64	62	61	60	60	59	58	57	56	55	55	56	60	63	67	67	65	62	61	60	58	55
Dewpoint (°F)	44	44	44	45	45	45	45	45	45	46	46	47	47	47	49	50	50	49	48	45	42	38	34	31
Wind Chill (°F)
Surface Wind (mph)	8	7	7	7	7	8	8	8	9	9	9	10	10	11	13	14	15	16	18	20	21	22	22	22
Wind Dir	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	SW	SW	SW	W	W	W	NW	NW	NW
Gust													18	21	22	23	25	26	29	31	34	37	39	37
Sky Cover (%)	31	32	33	35	36	36	35	34	36	39	41	46	51	56	62	69	75	74	73	72	64	55	47	39
Precipitation Potential (%)	4	10	10	10	10	10	10	9	9	9	11	11	11	21	21	21	65	65	65	49	49	49	14	14
Relative Humidity (%)	40	45	48	54	56	58	58	60	62	67	69	74	74	72	67	62	54	52	54	54	49	44	40	40
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc	Lkly	Lkly	Lkly	Chc	Chc	Chc	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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