Point Forecast: Ashburn VA  39.04N 77.46W (Elev. 249 ft)	Last Update: 12:52 pm EST Dec 5, 2025

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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 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: 1pm Fri, Dec 5 20252pm Fri, Dec 5 20253pm Fri, Dec 5 20254pm Fri, Dec 5 20255pm Fri, Dec 5 20256pm Fri, Dec 5 20257pm Fri, Dec 5 20258pm Fri, Dec 5 20259pm Fri, Dec 5 202510pm Fri, Dec 5 202511pm Fri, Dec 5 202512am Sat, Dec 6 20251am Sat, Dec 6 20252am Sat, Dec 6 20253am Sat, Dec 6 20254am Sat, Dec 6 20255am Sat, Dec 6 20256am Sat, Dec 6 20257am Sat, Dec 6 20258am Sat, Dec 6 20259am Sat, Dec 6 202510am Sat, Dec 6 202511am Sat, Dec 6 202512pm Sat, Dec 6 20251pm Sat, Dec 6 20252pm Sat, Dec 6 20253pm Sat, Dec 6 20254pm Sat, Dec 6 20255pm Sat, Dec 6 20256pm Sat, Dec 6 20257pm Sat, Dec 6 20258pm Sat, Dec 6 20259pm Sat, Dec 6 202510pm Sat, Dec 6 202511pm Sat, Dec 6 202512am Sun, Dec 7 20251am Sun, Dec 7 20252am Sun, Dec 7 20253am Sun, Dec 7 20254am Sun, Dec 7 20255am Sun, Dec 7 20256am Sun, Dec 7 20257am Sun, Dec 7 20258am Sun, Dec 7 20259am Sun, Dec 7 202510am Sun, Dec 7 202511am Sun, Dec 7 202512pm Sun, Dec 7 20251pm Sun, Dec 7 20252pm Sun, Dec 7 20253pm Sun, Dec 7 20254pm Sun, Dec 7 20255pm Sun, Dec 7 20256pm Sun, Dec 7 20257pm Sun, Dec 7 20258pm Sun, Dec 7 20259pm Sun, Dec 7 202510pm Sun, Dec 7 202511pm Sun, Dec 7 202512am Mon, Dec 8 20251am Mon, Dec 8 20252am Mon, Dec 8 20253am Mon, Dec 8 20254am Mon, Dec 8 20255am Mon, Dec 8 20256am Mon, Dec 8 20257am Mon, Dec 8 20258am Mon, Dec 8 20259am Mon, Dec 8 202510am Mon, Dec 8 202511am Mon, Dec 8 202512pm Mon, Dec 8 20251pm Mon, Dec 8 20252pm Mon, Dec 8 20253pm Mon, Dec 8 20254pm Mon, Dec 8 20255pm Mon, Dec 8 20256pm Mon, Dec 8 20257pm Mon, Dec 8 20258pm Mon, Dec 8 20259pm Mon, Dec 8 202510pm Mon, Dec 8 202511pm Mon, Dec 8 202512am Tue, Dec 9 20251am Tue, Dec 9 20252am Tue, Dec 9 20253am Tue, Dec 9 20254am Tue, Dec 9 20255am Tue, Dec 9 20256am Tue, Dec 9 20257am Tue, Dec 9 20258am Tue, Dec 9 20259am Tue, Dec 9 202510am Tue, Dec 9 202511am Tue, Dec 9 202512pm Tue, Dec 9 20251pm Tue, Dec 9 20252pm Tue, Dec 9 20253pm Tue, Dec 9 20254pm Tue, Dec 9 20255pm Tue, Dec 9 20256pm Tue, Dec 9 20257pm Tue, Dec 9 20258pm Tue, Dec 9 20259pm Tue, Dec 9 202510pm Tue, Dec 9 202511pm Tue, Dec 9 202512am Wed, Dec 10 2025

Date	12/05											12/06
Hour (EST)	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12
Temperature (°F)	31	32	32	32	31	30	29	29	29	29	29	29	29	28	28	28	28	27	27	28	30	33	36	38
Dewpoint (°F)	27	27	27	28	28	28	29	28	28	28	27	27	27	26	25	25	25	24	25	26	30	31	31	31
Wind Chill (°F)	28	29	29	32	31	30	29	29	29	29	29	29	29	28	28	28	28	27	27	28	30	33	36	38
Surface Wind (mph)	3	3	3	2	2	2	2	1	1	0	0	0	1	1	1	1	1	1	1	1	1	2	2	2
Wind Dir	E	E	E	E	E	E	E	NE	NE	N	N	W	W	W	W	W	W	W	W	W	W	SW	SW	SW
Gust
Sky Cover (%)	95	92	93	91	81	77	76	70	79	76	79	80	81	79	72	71	73	71	75	68	59	53	45	49
Precipitation Potential (%)	34	27	20	13	6	4	15	15	15	15	15	15	15	15	15	15	15	15	0	0	0	0	0	0
Relative Humidity (%)	85	85	85	88	88	96	100	96	96	96	96	96	96	96	92	92	92	96	92	92	100	92	82	76
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	Chc	Chc	SChc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date												12/07
Hour (EST)	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12
Temperature (°F)	40	41	41	41	38	36	34	32	31	31	30	30	29	28	28	27	26	25	26	28	31	35	38	40
Dewpoint (°F)	33	33	32	33	33	33	32	31	30	29	29	28	28	27	27	26	25	24	25	27	28	29	29	30
Wind Chill (°F)	38	39	39	39	38	36	34	32	31	31	30	30	29	28	28	27	26	25	26	28	31	35	36	38
Surface Wind (mph)	3	3	3	3	2	2	2	2	2	2	2	2	2	2	2	2	2	1	1	1	1	2	3	3
Wind Dir	SW	SW	SW	S	S	SW	SW	W	W	NW	NW	NW	NW	NW	N	N	N	N	N	NE	E	SE	SE	S
Gust
Sky Cover (%)	65	67	64	67	65	67	38	11	14	17	21	25	29	34	38	43	50	57	64	67	69	72	73	75
Precipitation Potential (%)	0	0	0	2	2	2	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	76	73	70	73	79	89	92	96	96	92	96	92	96	96	100	96	100	100	100	92	88	78	70	67
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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