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Point Forecast: Ashburn VA  39.05N 77.49W (Elev. 299 ft)	Last Update: 4:33 pm EDT Sep 16, 2019

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Weather Elements Weather/Precipitation Fire Weather Temperature (°F) Dewpoint (°F) Heat Index (°F) 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-ft)

48-Hour Period Starting: 12am Tue, Sep 17 20191am Tue, Sep 17 20192am Tue, Sep 17 20193am Tue, Sep 17 20194am Tue, Sep 17 20195am Tue, Sep 17 20196am Tue, Sep 17 20197am Tue, Sep 17 20198am Tue, Sep 17 20199am Tue, Sep 17 201910am Tue, Sep 17 201911am Tue, Sep 17 201912pm Tue, Sep 17 20191pm Tue, Sep 17 20192pm Tue, Sep 17 20193pm Tue, Sep 17 20194pm Tue, Sep 17 20195pm Tue, Sep 17 20196pm Tue, Sep 17 20197pm Tue, Sep 17 20198pm Tue, Sep 17 20199pm Tue, Sep 17 201910pm Tue, Sep 17 201911pm Tue, Sep 17 201912am Wed, Sep 18 20191am Wed, Sep 18 20192am Wed, Sep 18 20193am Wed, Sep 18 20194am Wed, Sep 18 20195am Wed, Sep 18 20196am Wed, Sep 18 20197am Wed, Sep 18 20198am Wed, Sep 18 20199am Wed, Sep 18 201910am Wed, Sep 18 201911am Wed, Sep 18 201912pm Wed, Sep 18 20191pm Wed, Sep 18 20192pm Wed, Sep 18 20193pm Wed, Sep 18 20194pm Wed, Sep 18 20195pm Wed, Sep 18 20196pm Wed, Sep 18 20197pm Wed, Sep 18 20198pm Wed, Sep 18 20199pm Wed, Sep 18 201910pm Wed, Sep 18 201911pm Wed, Sep 18 201912am Thu, Sep 19 20191am Thu, Sep 19 20192am Thu, Sep 19 20193am Thu, Sep 19 20194am Thu, Sep 19 20195am Thu, Sep 19 20196am Thu, Sep 19 20197am Thu, Sep 19 20198am Thu, Sep 19 20199am Thu, Sep 19 201910am Thu, Sep 19 201911am Thu, Sep 19 201912pm Thu, Sep 19 20191pm Thu, Sep 19 20192pm Thu, Sep 19 20193pm Thu, Sep 19 20194pm Thu, Sep 19 20195pm Thu, Sep 19 20196pm Thu, Sep 19 20197pm Thu, Sep 19 20198pm Thu, Sep 19 20199pm Thu, Sep 19 201910pm Thu, Sep 19 201911pm Thu, Sep 19 201912am Fri, Sep 20 20191am Fri, Sep 20 20192am Fri, Sep 20 20193am Fri, Sep 20 20194am Fri, Sep 20 20195am Fri, Sep 20 20196am Fri, Sep 20 20197am Fri, Sep 20 20198am Fri, Sep 20 20199am Fri, Sep 20 201910am Fri, Sep 20 201911am Fri, Sep 20 201912pm Fri, Sep 20 20191pm Fri, Sep 20 20192pm Fri, Sep 20 20193pm Fri, Sep 20 20194pm Fri, Sep 20 20195pm Fri, Sep 20 20196pm Fri, Sep 20 20197pm Fri, Sep 20 20198pm Fri, Sep 20 20199pm Fri, Sep 20 201910pm Fri, Sep 20 201911pm Fri, Sep 20 201912am Sat, Sep 21 20191am Sat, Sep 21 20192am Sat, Sep 21 20193am Sat, Sep 21 20194am Sat, Sep 21 20195am Sat, Sep 21 20196am Sat, Sep 21 20197am Sat, Sep 21 20198am Sat, Sep 21 20199am Sat, Sep 21 201910am Sat, Sep 21 201911am Sat, Sep 21 2019

Date	09/17
Hour (EDT)	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Temperature (°F)	71	71	70	69	68	66	67	66	67	69	71	73	74	75	76	76	76	75	73	70	67	65	64	63
Dewpoint (°F)	65	65	65	65	64	64	64	63	63	62	62	61	61	60	60	60	59	59	59	59	59	58	58	57
Heat Index (°F)														75	76	76	76	75
Surface Wind (mph)	5	6	6	6	7	7	7	8	8	8	9	9	8	8	7	7	7	7	6	6	5	5	5	5
Wind Dir	NE	NE	NE	NE	N	N	N	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE
Gust
Sky Cover (%)	75	76	77	77	79	82	80	78	76	77	78	79	70	60	51	46	41	36	30	23	17	15	13	11
Precipitation Potential (%)	18	18	26	26	26	26	26	26	21	21	21	21	21	21	6	6	6	6	6	6	3	3	3	3
Relative Humidity (%)	81	81	84	87	87	93	90	90	87	78	73	66	64	60	58	58	56	58	62	68	75	78	81	81
Rain	SChc	SChc	Chc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	SChc	SChc	SChc	SChc	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date	09/18
Hour (EDT)	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Temperature (°F)	62	61	61	60	59	59	59	59	60	64	67	70	72	74	75	76	75	75	73	70	67	65	63	62
Dewpoint (°F)	56	56	55	54	54	54	55	55	56	56	56	56	55	54	53	54	55	56	56	56	56	56	57	57
Heat Index (°F)															75	76	75	75
Surface Wind (mph)	3	2	1	1	2	3	3	2	2	3	5	6	6	6	6	7	8	8	7	6	5	5	5	5
Wind Dir	NE	NE	NE	NE	N	N	N	N	NE	NE	NE	NE	NE	NE	NE	E	E	E	E	E	E	E	E	E
Gust
Sky Cover (%)	12	12	13	12	12	11	11	12	12	13	13	14	14	14	14	17	19	22	19	15	12	14	15	17
Precipitation Potential (%)	3	3	2	2	2	2	2	2	1	1	1	1	1	1	1	1	1	1	1	1	0	0	0	0
Relative Humidity (%)	81	84	81	81	83	83	87	87	87	75	68	61	55	50	46	46	50	52	55	61	68	73	81	84
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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