Point Forecast: 2 Miles S Washington-Dulles International Airport VA  38.93N 77.45W (Elev. 91 m)	Last Update: 5:03 pm EST Dec 11, 2024

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Weather Elements Fire Weather Aviation Weather Temperature (°C) Dewpoint (°C) Wind Chill (°C) 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-m) Atmospheric Dispersion Index Low Visibility Occurrence Risk Index Ceiling Height Visibility

48-Hour Period Starting: 5pm 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 20246am Sat, Dec 14 20247am Sat, Dec 14 20248am Sat, Dec 14 20249am Sat, Dec 14 202410am Sat, Dec 14 202411am Sat, Dec 14 202412pm Sat, Dec 14 20241pm Sat, Dec 14 20242pm Sat, Dec 14 20243pm Sat, Dec 14 20244pm Sat, Dec 14 20245pm Sat, Dec 14 20246pm Sat, Dec 14 20247pm Sat, Dec 14 20248pm Sat, Dec 14 20249pm Sat, Dec 14 202410pm Sat, Dec 14 202411pm Sat, Dec 14 202412am Sun, Dec 15 20241am Sun, Dec 15 20242am Sun, Dec 15 20243am Sun, Dec 15 20244am Sun, Dec 15 20245am Sun, Dec 15 20246am Sun, Dec 15 20247am Sun, Dec 15 20248am Sun, Dec 15 20249am Sun, Dec 15 202410am Sun, Dec 15 202411am Sun, Dec 15 202412pm Sun, Dec 15 20241pm Sun, Dec 15 20242pm Sun, Dec 15 20243pm Sun, Dec 15 20244pm Sun, Dec 15 20245pm Sun, Dec 15 20246pm Sun, Dec 15 20247pm Sun, Dec 15 20248pm Sun, Dec 15 20249pm Sun, Dec 15 202410pm Sun, Dec 15 202411pm Sun, Dec 15 202412am Mon, Dec 16 20241am Mon, Dec 16 20242am Mon, Dec 16 20243am Mon, Dec 16 20244am Mon, Dec 16 2024

Date	12/11							12/12
Hour (EST)	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16
Temperature (°C)	6	6	5	4	4	3	3	3	2	2	1	1	0	-1	-1	0	2	3	4	4	4	5	5	4
Dewpoint (°C)	4	3	3	2	2	1	0	-1	-1	-2	-2	-3	-4	-4	-4	-4	-5	-6	-6	-7	-7	-7	-7	-7
Wind Chill (°C)	2	1	1	0	-1	-1	-1	-1	-1	-2	-3	-4	-4	-5	-6	-5	-3	-2	-1	0	0	1	1	0
Surface Wind (mph)	18	17	16	14	15	13	11	9	8	8	9	9	9	9	10	11	13	14	14	14	14	13	11	10
Wind Dir	NW	NW	NW	W	W	W	W	W	W	SW	SW	SW	SW	SW	SW	SW	W	W	W	W	W	W	W	W
Gust	36	36	34	34	32	31
Sky Cover (%)	96	96	84	71	26	16	14	5	6	5	6	16	10	10	17	7	15	12	5	4	6	7	6	7
Precipitation Potential (%)	48	28	15	4	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	89	86	85	85	85	85	79	79	79	78	78	75	75	75	75	72	61	52	48	42	42	42	41	44
Rain	Chc	Chc	SChc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date								12/13
Hour (EST)	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16
Temperature (°C)	3	2	1	0	-2	-2	-3	-3	-4	-4	-4	-4	-5	-6	-5	-4	-1	1	2	4	4	5	5	4
Dewpoint (°C)	-7	-8	-8	-7	-7	-8	-8	-8	-8	-8	-8	-8	-8	-8	-8	-7	-7	-6	-6	-6	-5	-4	-4	-4
Wind Chill (°C)	-1	-2	-2	-3	-4	-4	-3	-3	-4	-4	-4	-4	-5	-8	-8	-4	-1	-1	0	2	3	4	3	3
Surface Wind (mph)	9	7	6	5	3	3	2	2	2	1	1	2	2	3	3	1	1	3	5	5	5	3	5	5
Wind Dir	NW	NW	NW	NW	NW	NW	NW	NW	NW	W	W	SW	SW	SW	SW	S	NE	NE	NE	N	N	N	N	NE
Gust
Sky Cover (%)	9	13	17	5	9	13	14	16	17	19	23	25	27	30	32	32	31	30	35	44	49	50	52	53
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	48	49	51	58	66	66	71	71	77	77	77	77	81	84	81	78	63	58	56	50	50	50	50	55
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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