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Point Forecast: Fairfax VA  38.85N 77.29W (Elev. 400 ft)	Last Update: 9:33 pm EST Jan 22, 2019

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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)

48-Hour Period Starting: 10pm Tue, Jan 22 201911pm Tue, Jan 22 201912am Wed, Jan 23 20191am Wed, Jan 23 20192am Wed, Jan 23 20193am Wed, Jan 23 20194am Wed, Jan 23 20195am Wed, Jan 23 20196am Wed, Jan 23 20197am Wed, Jan 23 20198am Wed, Jan 23 20199am Wed, Jan 23 201910am Wed, Jan 23 201911am Wed, Jan 23 201912pm Wed, Jan 23 20191pm Wed, Jan 23 20192pm Wed, Jan 23 20193pm Wed, Jan 23 20194pm Wed, Jan 23 20195pm Wed, Jan 23 20196pm Wed, Jan 23 20197pm Wed, Jan 23 20198pm Wed, Jan 23 20199pm Wed, Jan 23 201910pm Wed, Jan 23 201911pm Wed, Jan 23 201912am Thu, Jan 24 20191am Thu, Jan 24 20192am Thu, Jan 24 20193am Thu, Jan 24 20194am Thu, Jan 24 20195am Thu, Jan 24 20196am Thu, Jan 24 20197am Thu, Jan 24 20198am Thu, Jan 24 20199am Thu, Jan 24 201910am Thu, Jan 24 201911am Thu, Jan 24 201912pm Thu, Jan 24 20191pm Thu, Jan 24 20192pm Thu, Jan 24 20193pm Thu, Jan 24 20194pm Thu, Jan 24 20195pm Thu, Jan 24 20196pm Thu, Jan 24 20197pm Thu, Jan 24 20198pm Thu, Jan 24 20199pm Thu, Jan 24 201910pm Thu, Jan 24 201911pm Thu, Jan 24 201912am Fri, Jan 25 20191am Fri, Jan 25 20192am Fri, Jan 25 20193am Fri, Jan 25 20194am Fri, Jan 25 20195am Fri, Jan 25 20196am Fri, Jan 25 20197am Fri, Jan 25 20198am Fri, Jan 25 20199am Fri, Jan 25 201910am Fri, Jan 25 201911am Fri, Jan 25 201912pm Fri, Jan 25 20191pm Fri, Jan 25 20192pm Fri, Jan 25 20193pm Fri, Jan 25 20194pm Fri, Jan 25 20195pm Fri, Jan 25 20196pm Fri, Jan 25 20197pm Fri, Jan 25 20198pm Fri, Jan 25 20199pm Fri, Jan 25 201910pm Fri, Jan 25 201911pm Fri, Jan 25 201912am Sat, Jan 26 20191am Sat, Jan 26 20192am Sat, Jan 26 20193am Sat, Jan 26 20194am Sat, Jan 26 20195am Sat, Jan 26 20196am Sat, Jan 26 20197am Sat, Jan 26 20198am Sat, Jan 26 20199am Sat, Jan 26 201910am Sat, Jan 26 201911am Sat, Jan 26 201912pm Sat, Jan 26 20191pm Sat, Jan 26 20192pm Sat, Jan 26 20193pm Sat, Jan 26 20194pm Sat, Jan 26 20195pm Sat, Jan 26 20196pm Sat, Jan 26 20197pm Sat, Jan 26 20198pm Sat, Jan 26 20199pm Sat, Jan 26 201910pm Sat, Jan 26 201911pm Sat, Jan 26 201912am Sun, Jan 27 20191am Sun, Jan 27 20192am Sun, Jan 27 20193am Sun, Jan 27 20194am Sun, Jan 27 20195am Sun, Jan 27 20196am Sun, Jan 27 20197am Sun, Jan 27 20198am Sun, Jan 27 20199am Sun, Jan 27 2019

Date	01/22		01/23
Hour (EST)	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 (°F)	28	28	28	28	28	28	27	27	27	29	30	32	34	35	36	37	38	39	39	39	40	42	42	42
Dewpoint (°F)	10	11	12	13	14	14	15	16	18	18	19	21	23	26	28	31	33	35	37	39	40	41	42	42
Wind Chill (°F)	20	20	19	19	19	19	17	17	17	20	21	24	26	27	28	29	31	32	32	32	33	36	36	36
Surface Wind (mph)	8	8	9	9	9	10	10	10	10	10	10	10	10	10	11	11	11	11	11	11	11	11	11	11
Wind Dir	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S
Gust																20	20	20
Sky Cover (%)	100	100	100	100	100	100	100	99	96	95	95	95	95	95	95	95	96	99	100	100	100	100	100	100
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	5	5	5	5	5	5	29	29	29	29	29	29	40	40	40
Relative Humidity (%)	46	48	50	53	55	55	60	63	68	63	63	63	64	69	72	79	82	85	92	100	100	96	100	100
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date			01/24
Hour (EST)	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 (°F)	42	42	42	42	42	42	42	42	42	42	42	42	42	43	43	44	43	42	41	39	37	35	34	33
Dewpoint (°F)	42	42	42	42	42	42	42	42	42	42	42	42	40	39	38	37	35	32	30	29	28	27	26	24
Wind Chill (°F)	36	36	36	37	36	36	36	36	38	38	37	36	35	36	37	38	36	35	33	31	30	28	27	26
Surface Wind (mph)	11	10	9	8	9	10	10	9	7	6	8	10	13	13	11	11	13	14	14	13	10	9	9	8
Wind Dir	S	S	S	S	S	S	S	SW	SW	W	W	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW
Gust													20	21	21	21	22	22	22	20
Sky Cover (%)	100	100	100	100	100	100	100	100	100	100	99	97	96	93	88	85	74	53	42	45	51	54	46	29
Precipitation Potential (%)	58	58	58	100	100	100	100	100	100	100	100	100	73	73	73	32	32	32	6	6	6	0	0	0
Relative Humidity (%)	100	100	100	100	100	100	100	100	100	100	100	100	93	86	82	76	73	67	65	67	70	72	72	69
Rain	Lkly	Lkly	Lkly	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Lkly	Lkly	Lkly	Chc	Chc	Chc	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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