Point Forecast: 2 Miles S Washington-Dulles International Airport VA  38.93N 77.45W (Elev. 299 ft)	Last Update: 3:29 pm EST Dec 9, 2024

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Weather Elements Fire Weather Aviation 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 Ceiling Height Visibility

48-Hour Period Starting: 6pm Mon, Dec 9 20247pm Mon, Dec 9 20248pm Mon, Dec 9 20249pm Mon, Dec 9 202410pm Mon, Dec 9 202411pm Mon, Dec 9 202412am Tue, Dec 10 20241am Tue, Dec 10 20242am Tue, Dec 10 20243am Tue, Dec 10 20244am Tue, Dec 10 20245am Tue, Dec 10 20246am Tue, Dec 10 20247am Tue, Dec 10 20248am Tue, Dec 10 20249am Tue, Dec 10 202410am Tue, Dec 10 202411am Tue, Dec 10 202412pm Tue, Dec 10 20241pm Tue, Dec 10 20242pm Tue, Dec 10 20243pm Tue, Dec 10 20244pm Tue, Dec 10 20245pm Tue, Dec 10 20246pm Tue, Dec 10 20247pm Tue, Dec 10 20248pm Tue, Dec 10 20249pm Tue, Dec 10 202410pm Tue, Dec 10 202411pm Tue, Dec 10 202412am Wed, Dec 11 20241am Wed, Dec 11 20242am Wed, Dec 11 20243am Wed, Dec 11 20244am Wed, Dec 11 20245am Wed, Dec 11 20246am Wed, Dec 11 20247am Wed, Dec 11 20248am Wed, Dec 11 20249am Wed, Dec 11 202410am Wed, Dec 11 202411am Wed, Dec 11 202412pm Wed, Dec 11 20241pm Wed, Dec 11 20242pm Wed, Dec 11 20243pm Wed, Dec 11 20244pm Wed, Dec 11 20245pm Wed, Dec 11 20246pm Wed, Dec 11 20247pm Wed, Dec 11 20248pm Wed, Dec 11 20249pm Wed, Dec 11 202410pm Wed, Dec 11 202411pm Wed, Dec 11 202412am Thu, Dec 12 20241am Thu, Dec 12 20242am Thu, Dec 12 20243am Thu, Dec 12 20244am Thu, Dec 12 20245am Thu, Dec 12 20246am Thu, Dec 12 20247am Thu, Dec 12 20248am Thu, Dec 12 20249am Thu, Dec 12 202410am Thu, Dec 12 202411am Thu, Dec 12 202412pm Thu, Dec 12 20241pm Thu, Dec 12 20242pm Thu, Dec 12 20243pm Thu, Dec 12 20244pm Thu, Dec 12 20245pm Thu, Dec 12 20246pm Thu, Dec 12 20247pm Thu, Dec 12 20248pm Thu, Dec 12 20249pm Thu, Dec 12 202410pm Thu, Dec 12 202411pm Thu, Dec 12 202412am Fri, Dec 13 20241am Fri, Dec 13 20242am Fri, Dec 13 20243am Fri, Dec 13 20244am Fri, Dec 13 20245am Fri, Dec 13 20246am Fri, Dec 13 20247am Fri, Dec 13 20248am Fri, Dec 13 20249am Fri, Dec 13 202410am Fri, Dec 13 202411am Fri, Dec 13 202412pm Fri, Dec 13 20241pm Fri, Dec 13 20242pm Fri, Dec 13 20243pm Fri, Dec 13 20244pm Fri, Dec 13 20245pm Fri, Dec 13 20246pm Fri, Dec 13 20247pm Fri, Dec 13 20248pm Fri, Dec 13 20249pm Fri, Dec 13 202410pm Fri, Dec 13 202411pm Fri, Dec 13 202412am Sat, Dec 14 20241am Sat, Dec 14 20242am Sat, Dec 14 20243am Sat, Dec 14 20244am Sat, Dec 14 20245am Sat, Dec 14 2024

Date	12/09						12/10
Hour (EST)	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17
Temperature (°F)	52	51	50	49	48	47	47	46	45	44	43	43	43	43	43	46	49	52	54	56	57	56	56	56
Dewpoint (°F)	49	49	48	47	48	46	46	45	44	43	43	42	42	42	43	44	47	49	50	51	52	51	52	52
Wind Chill (°F)			48	47	45	44	44	44	44	42	42	41	43	43	43	45	48
Surface Wind (mph)	7	6	6	6	6	6	5	5	3	3	3	2	2	2	2	3	3	5	5	6	7	8	8	8
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
Sky Cover (%)	35	27	27	30	38	59	80	81	86	84	76	73	75	76	79	85	84	84	83	81	86	93	100	100
Precipitation Potential (%)	7	3	3	3	0	0	0	1	1	1	8	8	8	5	5	5	10	10	10	30	30	30	30	30
Relative Humidity (%)	89	93	93	93	100	96	96	100	96	96	100	96	100	100	100	96	96	93	86	83	83	83	83	83
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	Chc	Chc	Chc	Chc	Chc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date							12/11
Hour (EST)	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17
Temperature (°F)	55	56	56	56	56	57	58	58	58	58	56	56	56	56	57	58	58	58	57	56	53	50	47	45
Dewpoint (°F)	53	53	54	54	55	55	56	56	56	57	55	55	55	55	56	56	57	57	56	55	52	49	45	43
Wind Chill (°F)																						45	41	38
Surface Wind (mph)	8	8	8	9	9	9	10	10	10	10	10	10	10	11	11	10	10	10	10	10	13	14	16	16
Wind Dir	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	SW	SW	W	W	W	NW	NW
Gust																					22	26	30	29
Sky Cover (%)	99	99	99	100	100	100	100	100	100	100	100	100	100	100	99	98	97	97	97	97	95	93	91	89
Precipitation Potential (%)	30	70	70	70	70	70	70	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100
Relative Humidity (%)	90	90	93	93	96	96	93	93	93	96	100	100	100	96	96	93	96	96	96	96	96	96	93	93
Rain	Chc	Lkly	Lkly	Lkly	Lkly	Lkly	Lkly	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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