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Point Forecast: 2 Miles S Washington-Dulles International Airport VA  38.93N 77.45W (Elev. 299 ft)	Last Update: 1:44 pm EST Dec 10, 2023

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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: 3pm Sun, Dec 10 20234pm Sun, Dec 10 20235pm Sun, Dec 10 20236pm Sun, Dec 10 20237pm Sun, Dec 10 20238pm Sun, Dec 10 20239pm Sun, Dec 10 202310pm Sun, Dec 10 202311pm Sun, Dec 10 202312am Mon, Dec 11 20231am Mon, Dec 11 20232am Mon, Dec 11 20233am Mon, Dec 11 20234am Mon, Dec 11 20235am Mon, Dec 11 20236am Mon, Dec 11 20237am Mon, Dec 11 20238am Mon, Dec 11 20239am Mon, Dec 11 202310am Mon, Dec 11 202311am Mon, Dec 11 202312pm Mon, Dec 11 20231pm Mon, Dec 11 20232pm Mon, Dec 11 20233pm Mon, Dec 11 20234pm Mon, Dec 11 20235pm Mon, Dec 11 20236pm Mon, Dec 11 20237pm Mon, Dec 11 20238pm Mon, Dec 11 20239pm Mon, Dec 11 202310pm Mon, Dec 11 202311pm Mon, Dec 11 202312am Tue, Dec 12 20231am Tue, Dec 12 20232am Tue, Dec 12 20233am Tue, Dec 12 20234am Tue, Dec 12 20235am Tue, Dec 12 20236am Tue, Dec 12 20237am Tue, Dec 12 20238am Tue, Dec 12 20239am Tue, Dec 12 202310am Tue, Dec 12 202311am Tue, Dec 12 202312pm Tue, Dec 12 20231pm Tue, Dec 12 20232pm Tue, Dec 12 20233pm Tue, Dec 12 20234pm Tue, Dec 12 20235pm Tue, Dec 12 20236pm Tue, Dec 12 20237pm Tue, Dec 12 20238pm Tue, Dec 12 20239pm Tue, Dec 12 202310pm Tue, Dec 12 202311pm Tue, Dec 12 202312am Wed, Dec 13 20231am Wed, Dec 13 20232am Wed, Dec 13 20233am Wed, Dec 13 20234am Wed, Dec 13 20235am Wed, Dec 13 20236am Wed, Dec 13 20237am Wed, Dec 13 20238am Wed, Dec 13 20239am Wed, Dec 13 202310am Wed, Dec 13 202311am Wed, Dec 13 202312pm Wed, Dec 13 20231pm Wed, Dec 13 20232pm Wed, Dec 13 20233pm Wed, Dec 13 20234pm Wed, Dec 13 20235pm Wed, Dec 13 20236pm Wed, Dec 13 20237pm Wed, Dec 13 20238pm Wed, Dec 13 20239pm Wed, Dec 13 202310pm Wed, Dec 13 202311pm Wed, Dec 13 202312am Thu, Dec 14 20231am Thu, Dec 14 20232am Thu, Dec 14 20233am Thu, Dec 14 20234am Thu, Dec 14 20235am Thu, Dec 14 20236am Thu, Dec 14 20237am Thu, Dec 14 20238am Thu, Dec 14 20239am Thu, Dec 14 202310am Thu, Dec 14 202311am Thu, Dec 14 202312pm Thu, Dec 14 20231pm Thu, Dec 14 20232pm Thu, Dec 14 20233pm Thu, Dec 14 20234pm Thu, Dec 14 20235pm Thu, Dec 14 20236pm Thu, Dec 14 20237pm Thu, Dec 14 20238pm Thu, Dec 14 20239pm Thu, Dec 14 202310pm Thu, Dec 14 202311pm Thu, Dec 14 202312am Fri, Dec 15 20231am Fri, Dec 15 20232am Fri, Dec 15 2023

Date	12/10									12/11
Hour (EST)	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14
Temperature (°F)	58	55	54	50	48	46	44	43	40	38	36	36	35	35	35	35	36	37	39	40	42	43	43	43
Dewpoint (°F)	56	55	53	50	47	45	43	42	40	38	36	35	35	34	34	33	32	32	33	32	31	30	29	28
Wind Chill (°F)				45	42	39	36	35	31	28	26	26	25	25	25	25	26	27	29	30	33	34	34	35
Surface Wind (mph)	9	9	11	14	15	17	18	18	18	18	17	17	16	16	16	16	16	18	20	21	22	22	21	20
Wind Dir	W	NW	NW	NW	N	N	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW
Gust				21	24	25	26	26	28	29	30	29	29	28	29	31	33	36	38	39	39	38	36	33
Sky Cover (%)	100	100	100	100	100	99	99	98	97	97	96	90	85	79	73	68	62	56	49	43	37	31	25	22
Precipitation Potential (%)	100	100	100	100	100	100	100	100	100	99	99	99	99	92	87	63	21	17	12	12	11	11	2	2
Relative Humidity (%)	93	100	96	100	96	96	96	96	100	100	100	96	100	96	96	92	85	82	79	73	65	60	57	55
Rain	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Lkly	SChc	SChc	--	--	--	--	--	--
Thunder	SChc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	Ocnl	Ocnl	Ocnl	Lkly	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date										12/12
Hour (EST)	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14
Temperature (°F)	42	41	39	37	36	35	34	33	32	31	30	29	28	28	27	26	27	29	33	37	40	42	44	45
Dewpoint (°F)	28	27	27	27	26	26	26	25	25	24	24	24	24	24	24	24	24	25	26	27	27	28	28	28
Wind Chill (°F)	33	32	31	29	29	28	28	28	26	26	25	25	24	28	27	26	23	25	30	33	35	37	39	40
Surface Wind (mph)	18	17	15	13	10	8	7	6	6	5	5	3	3	2	2	2	3	3	3	5	7	8	9	9
Wind Dir	NW	NW	NW	NW	NW	NW	W	W	W	W	W	W	W	W	W	SW	SW	SW	SW	S	S	S	S	S
Gust	30	26	22
Sky Cover (%)	18	15	12	9	5	4	4	4	3	3	2	3	4	5	5	7	7	8	9	9	8	6	5	6
Precipitation Potential (%)	2	2	2	2	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	57	57	62	67	67	69	72	72	75	75	78	81	85	85	88	92	88	85	75	67	59	57	53	51
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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