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Point Forecast: Tysons Corner VA  38.93N 77.22W (Elev. 108 m)	Last Update: 10:31 pm EDT Sep 27, 2021

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

48-Hour Period Starting: 10pm Mon, Sep 27 202111pm Mon, Sep 27 202112am Tue, Sep 28 20211am Tue, Sep 28 20212am Tue, Sep 28 20213am Tue, Sep 28 20214am Tue, Sep 28 20215am Tue, Sep 28 20216am Tue, Sep 28 20217am Tue, Sep 28 20218am Tue, Sep 28 20219am Tue, Sep 28 202110am Tue, Sep 28 202111am Tue, Sep 28 202112pm Tue, Sep 28 20211pm Tue, Sep 28 20212pm Tue, Sep 28 20213pm Tue, Sep 28 20214pm Tue, Sep 28 20215pm Tue, Sep 28 20216pm Tue, Sep 28 20217pm Tue, Sep 28 20218pm Tue, Sep 28 20219pm Tue, Sep 28 202110pm Tue, Sep 28 202111pm Tue, Sep 28 202112am Wed, Sep 29 20211am Wed, Sep 29 20212am Wed, Sep 29 20213am Wed, Sep 29 20214am Wed, Sep 29 20215am Wed, Sep 29 20216am Wed, Sep 29 20217am Wed, Sep 29 20218am Wed, Sep 29 20219am Wed, Sep 29 202110am Wed, Sep 29 202111am Wed, Sep 29 202112pm Wed, Sep 29 20211pm Wed, Sep 29 20212pm Wed, Sep 29 20213pm Wed, Sep 29 20214pm Wed, Sep 29 20215pm Wed, Sep 29 20216pm Wed, Sep 29 20217pm Wed, Sep 29 20218pm Wed, Sep 29 20219pm Wed, Sep 29 202110pm Wed, Sep 29 202111pm Wed, Sep 29 202112am Thu, Sep 30 20211am Thu, Sep 30 20212am Thu, Sep 30 20213am Thu, Sep 30 20214am Thu, Sep 30 20215am Thu, Sep 30 20216am Thu, Sep 30 20217am Thu, Sep 30 20218am Thu, Sep 30 20219am Thu, Sep 30 202110am Thu, Sep 30 202111am Thu, Sep 30 202112pm Thu, Sep 30 20211pm Thu, Sep 30 20212pm Thu, Sep 30 20213pm Thu, Sep 30 20214pm Thu, Sep 30 20215pm Thu, Sep 30 20216pm Thu, Sep 30 20217pm Thu, Sep 30 20218pm Thu, Sep 30 20219pm Thu, Sep 30 202110pm Thu, Sep 30 202111pm Thu, Sep 30 202112am Fri, Oct 1 20211am Fri, Oct 1 20212am Fri, Oct 1 20213am Fri, Oct 1 20214am Fri, Oct 1 20215am Fri, Oct 1 20216am Fri, Oct 1 20217am Fri, Oct 1 20218am Fri, Oct 1 20219am Fri, Oct 1 202110am Fri, Oct 1 202111am Fri, Oct 1 202112pm Fri, Oct 1 20211pm Fri, Oct 1 20212pm Fri, Oct 1 20213pm Fri, Oct 1 20214pm Fri, Oct 1 20215pm Fri, Oct 1 20216pm Fri, Oct 1 20217pm Fri, Oct 1 20218pm Fri, Oct 1 20219pm Fri, Oct 1 202110pm Fri, Oct 1 202111pm Fri, Oct 1 202112am Sat, Oct 2 20211am Sat, Oct 2 20212am Sat, Oct 2 20213am Sat, Oct 2 20214am Sat, Oct 2 20215am Sat, Oct 2 20216am Sat, Oct 2 20217am Sat, Oct 2 20218am Sat, Oct 2 20219am Sat, Oct 2 2021

Date	09/27		09/28
Hour (EDT)	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21
Temperature (°C)	21	20	19	19	18	18	18	18	17	17	18	20	22	24	25	27	27	27	27	25	24	23	21	20
Dewpoint (°C)	13	13	13	13	13	13	13	13	13	13	14	15	16	17	17	18	18	18	18	18	19	18	18	17
Heat Index (°C)														24	25	28	28	28	28	25	24
Surface Wind (mph)	10	11	10	8	8	7	7	6	5	6	5	6	7	8	8	9	9	9	8	8	7	7	7	7
Wind Dir	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	W	W	W	W	W	W	W	W	W	W	NW	N	NW
Gust
Sky Cover (%)	5	1	1	2	3	2	3	29	29	33	42	35	36	24	36	23	26	39	36	48	52	39	41	44
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	30	30	30	30	30	30	53	53	53	53	53	53	10	10
Relative Humidity (%)	63	65	68	70	73	73	75	73	75	78	81	73	68	64	62	58	58	58	58	67	74	74	81	84
Rain	--	--	--	--	--	--	--	--	--	--	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc	SChc	SChc	SChc	Chc	Chc	Chc	Chc	Chc	Chc	--	--
Date			09/29
Hour (EDT)	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21
Temperature (°C)	19	18	18	17	17	16	14	14	13	13	13	14	16	18	19	20	21	21	21	20	19	18	17	16
Dewpoint (°C)	17	17	17	16	15	14	13	12	11	10	9	9	9	9	9	9	9	9	9	9	9	10	10	10
Heat Index (°C)
Surface Wind (mph)	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	6	5	3	3
Wind Dir	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N
Gust
Sky Cover (%)	36	41	38	17	22	21	20	18	16	13	11	8	6	3	3	3	3	3	3	3	3	4	5	4
Precipitation Potential (%)	10	4	4	4	7	7	7	7	7	7	3	3	3	3	3	3	4	4	4	4	4	4	2	2
Relative Humidity (%)	87	93	93	90	90	93	93	86	83	83	80	72	62	56	52	51	49	49	49	51	54	60	65	69
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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