Point Forecast: Mc Lean VA  38.95N 77.19W (Elev. 253 ft)	Last Update: 3:30 am EST Jan 25, 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 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: 4am Sat, Jan 25 20255am Sat, Jan 25 20256am Sat, Jan 25 20257am Sat, Jan 25 20258am Sat, Jan 25 20259am Sat, Jan 25 202510am Sat, Jan 25 202511am Sat, Jan 25 202512pm Sat, Jan 25 20251pm Sat, Jan 25 20252pm Sat, Jan 25 20253pm Sat, Jan 25 20254pm Sat, Jan 25 20255pm Sat, Jan 25 20256pm Sat, Jan 25 20257pm Sat, Jan 25 20258pm Sat, Jan 25 20259pm Sat, Jan 25 202510pm Sat, Jan 25 202511pm Sat, Jan 25 202512am Sun, Jan 26 20251am Sun, Jan 26 20252am Sun, Jan 26 20253am Sun, Jan 26 20254am Sun, Jan 26 20255am Sun, Jan 26 20256am Sun, Jan 26 20257am Sun, Jan 26 20258am Sun, Jan 26 20259am Sun, Jan 26 202510am Sun, Jan 26 202511am Sun, Jan 26 202512pm Sun, Jan 26 20251pm Sun, Jan 26 20252pm Sun, Jan 26 20253pm Sun, Jan 26 20254pm Sun, Jan 26 20255pm Sun, Jan 26 20256pm Sun, Jan 26 20257pm Sun, Jan 26 20258pm Sun, Jan 26 20259pm Sun, Jan 26 202510pm Sun, Jan 26 202511pm Sun, Jan 26 202512am Mon, Jan 27 20251am Mon, Jan 27 20252am Mon, Jan 27 20253am Mon, Jan 27 20254am Mon, Jan 27 20255am Mon, Jan 27 20256am Mon, Jan 27 20257am Mon, Jan 27 20258am Mon, Jan 27 20259am Mon, Jan 27 202510am Mon, Jan 27 202511am Mon, Jan 27 202512pm Mon, Jan 27 20251pm Mon, Jan 27 20252pm Mon, Jan 27 20253pm Mon, Jan 27 20254pm Mon, Jan 27 20255pm Mon, Jan 27 20256pm Mon, Jan 27 20257pm Mon, Jan 27 20258pm Mon, Jan 27 20259pm Mon, Jan 27 202510pm Mon, Jan 27 202511pm Mon, Jan 27 202512am Tue, Jan 28 20251am Tue, Jan 28 20252am Tue, Jan 28 20253am Tue, Jan 28 20254am Tue, Jan 28 20255am Tue, Jan 28 20256am Tue, Jan 28 20257am Tue, Jan 28 20258am Tue, Jan 28 20259am Tue, Jan 28 202510am Tue, Jan 28 202511am Tue, Jan 28 202512pm Tue, Jan 28 20251pm Tue, Jan 28 20252pm Tue, Jan 28 20253pm Tue, Jan 28 20254pm Tue, Jan 28 20255pm Tue, Jan 28 20256pm Tue, Jan 28 20257pm Tue, Jan 28 20258pm Tue, Jan 28 20259pm Tue, Jan 28 202510pm Tue, Jan 28 202511pm Tue, Jan 28 202512am Wed, Jan 29 20251am Wed, Jan 29 20252am Wed, Jan 29 20253am Wed, Jan 29 20254am Wed, Jan 29 20255am Wed, Jan 29 20256am Wed, Jan 29 20257am Wed, Jan 29 20258am Wed, Jan 29 20259am Wed, Jan 29 202510am Wed, Jan 29 202511am Wed, Jan 29 202512pm Wed, Jan 29 20251pm Wed, Jan 29 20252pm Wed, Jan 29 20253pm Wed, Jan 29 2025

Date	01/25																				01/26
Hour (EST)	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03
Temperature (°F)	15	15	14	18	19	22	26	29	32	34	35	36	37	36	34	33	32	32	32	32	32	31	32	32
Dewpoint (°F)	11	11	11	12	13	15	15	15	16	17	17	16	17	17	16	16	17	17	18	18	19	20	21	22
Wind Chill (°F)	15	15	14	18	19	22	22	23	26	27	28	30	32	31	29	28	26	26	26	26	26	25	26	26
Surface Wind (mph)	2	2	1	1	2	2	3	6	7	8	8	7	6	6	6	6	6	6	6	6	6	6	6	6
Wind Dir	NW	NW	W	W	W	W	SW	SW	SW	SW	S	SW	S	S	S	S	SW	SW	SW	SW	SW	SW	SW	SW
Gust
Sky Cover (%)	16	15	15	12	7	3	13	24	33	36	40	42	32	33	37	43	41	39	42	58	79	82	84	91
Precipitation Potential (%)	0	0	0	1	1	1	1	1	1	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	84	84	88	77	77	74	62	55	51	49	47	43	44	45	47	49	53	53	56	56	58	63	63	66
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date																					01/27
Hour (EST)	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03
Temperature (°F)	32	32	32	32	33	35	37	39	41	42	42	42	41	39	36	34	32	31	30	29	29	28	27	27
Dewpoint (°F)	22	22	22	23	23	24	26	26	25	24	24	23	23	22	22	21	21	20	20	20	19	19	19	20
Wind Chill (°F)	26	26	26	26	28	30	32	33	35	36	36	36	35	33	31	30	29	28	26	25	29	28	27	23
Surface Wind (mph)	6	6	6	6	6	6	7	8	9	10	10	10	9	8	6	5	3	3	3	3	2	2	2	3
Wind Dir	SW	SW	SW	SW	SW	W	W	W	W	W	W	W	W	W	NW	NW	NW	NW	NW	NW	W	W	W	W
Gust									18	20	20	18
Sky Cover (%)	95	95	95	97	93	93	93	91	87	85	76	57	47	44	38	35	37	40	42	46	54	58	55	49
Precipitation Potential (%)	0	0	0	11	11	11	11	11	11	1	1	1	1	1	1	0	0	0	0	0	0	1	1	1
Relative Humidity (%)	66	66	66	69	66	64	64	59	52	48	48	46	48	50	56	58	63	63	66	69	66	68	71	74
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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