Point Forecast: Ashburn VA  39.05N 77.49W (Elev. 91 m)	Last Update: 3:30 am EST Dec 6, 2024

[hide menu]

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: 3am Fri, Dec 6 20244am Fri, Dec 6 20245am Fri, Dec 6 20246am Fri, Dec 6 20247am Fri, Dec 6 20248am Fri, Dec 6 20249am Fri, Dec 6 202410am Fri, Dec 6 202411am Fri, Dec 6 202412pm Fri, Dec 6 20241pm Fri, Dec 6 20242pm Fri, Dec 6 20243pm Fri, Dec 6 20244pm Fri, Dec 6 20245pm Fri, Dec 6 20246pm Fri, Dec 6 20247pm Fri, Dec 6 20248pm Fri, Dec 6 20249pm Fri, Dec 6 202410pm Fri, Dec 6 202411pm Fri, Dec 6 202412am Sat, Dec 7 20241am Sat, Dec 7 20242am Sat, Dec 7 20243am Sat, Dec 7 20244am Sat, Dec 7 20245am Sat, Dec 7 20246am Sat, Dec 7 20247am Sat, Dec 7 20248am Sat, Dec 7 20249am Sat, Dec 7 202410am Sat, Dec 7 202411am Sat, Dec 7 202412pm Sat, Dec 7 20241pm Sat, Dec 7 20242pm Sat, Dec 7 20243pm Sat, Dec 7 20244pm Sat, Dec 7 20245pm Sat, Dec 7 20246pm Sat, Dec 7 20247pm Sat, Dec 7 20248pm Sat, Dec 7 20249pm Sat, Dec 7 202410pm Sat, Dec 7 202411pm Sat, Dec 7 202412am Sun, Dec 8 20241am Sun, Dec 8 20242am Sun, Dec 8 20243am Sun, Dec 8 20244am Sun, Dec 8 20245am Sun, Dec 8 20246am Sun, Dec 8 20247am Sun, Dec 8 20248am Sun, Dec 8 20249am Sun, Dec 8 202410am Sun, Dec 8 202411am Sun, Dec 8 202412pm Sun, Dec 8 20241pm Sun, Dec 8 20242pm Sun, Dec 8 20243pm Sun, Dec 8 20244pm Sun, Dec 8 20245pm Sun, Dec 8 20246pm Sun, Dec 8 20247pm Sun, Dec 8 20248pm Sun, Dec 8 20249pm Sun, Dec 8 202410pm Sun, Dec 8 202411pm Sun, Dec 8 202412am Mon, Dec 9 20241am Mon, Dec 9 20242am Mon, Dec 9 20243am Mon, Dec 9 20244am Mon, Dec 9 20245am Mon, Dec 9 20246am Mon, Dec 9 20247am Mon, Dec 9 20248am Mon, Dec 9 20249am Mon, Dec 9 202410am Mon, Dec 9 202411am Mon, Dec 9 202412pm Mon, Dec 9 20241pm Mon, Dec 9 20242pm Mon, Dec 9 20243pm Mon, Dec 9 20244pm Mon, Dec 9 20245pm Mon, Dec 9 20246pm 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 2024

Date	12/06																					12/07
Hour (EST)	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02
Temperature (°C)	-3	-3	-3	-3	-4	-3	-2	0	2	2	2	3	3	1	0	-2	-2	-3	-3	-4	-4	-4	-4	-4
Dewpoint (°C)	-9	-9	-9	-9	-9	-8	-8	-8	-9	-9	-9	-9	-10	-10	-10	-9	-9	-9	-9	-9	-9	-9	-9	-9
Wind Chill (°C)	-9	-9	-9	-9	-10	-9	-8	-6	-4	-3	-3	-2	-2	-3	-4	-6	-6	-7	-7	-8	-8	-8	-8	-8
Surface Wind (mph)	14	14	13	11	11	13	14	15	15	15	14	13	11	10	9	8	7	6	6	6	6	6	6	6
Wind Dir	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	W	W	W	W	W	W	W	W	W
Gust
Sky Cover (%)	21	28	29	31	32	38	45	51	52	53	54	45	37	29	23	18	12	13	15	16	25	33	42	38
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 (%)	63	63	65	65	68	68	60	53	45	43	43	40	38	43	47	55	58	65	65	68	65	68	65	65
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date																						12/08
Hour (EST)	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02
Temperature (°C)	-4	-4	-4	-4	-5	-4	-2	0	2	3	4	4	4	3	2	0	-2	-3	-3	-3	-3	-3	-3	-3
Dewpoint (°C)	-9	-9	-9	-9	-9	-9	-9	-9	-9	-9	-9	-9	-8	-8	-8	-7	-7	-7	-7	-7	-7	-7	-7	-7
Wind Chill (°C)	-8	-8	-8	-8	-8	-8	-6	-4	-2	-1	1	2	2	1	-1	-3	-5	-6	-6	-6	-6	-6	-6	-6
Surface Wind (mph)	6	6	6	5	5	6	7	8	9	9	9	8	7	6	6	6	6	5	3	3	3	3	3	3
Wind Dir	W	W	W	W	W	W	W	W	W	W	W	W	W	SW	SW	SW	S	S	SW	SW	SW	SW	SW	SW
Gust
Sky Cover (%)	33	29	26	24	21	27	34	40	46	52	57	53	48	44	40	37	34	39	45	51	54	58	62	64
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 (%)	68	68	68	71	71	65	55	49	42	40	37	37	39	44	49	58	66	71	74	74	74	74	74	74
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

English Units Forecast Discussion 7-Day Forecast Hourly Weather Graph Hazardous Weather Briefing Page Past Weather Information Interactive Forecast Map Home