Point Forecast: Mc Lean VA  38.95N 77.19W (Elev. 253 ft)	Last Update: 4:54 pm EDT Apr 10, 2026

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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: 4pm Fri, Apr 10 20265pm Fri, Apr 10 20266pm Fri, Apr 10 20267pm Fri, Apr 10 20268pm Fri, Apr 10 20269pm Fri, Apr 10 202610pm Fri, Apr 10 202611pm Fri, Apr 10 202612am Sat, Apr 11 20261am Sat, Apr 11 20262am Sat, Apr 11 20263am Sat, Apr 11 20264am Sat, Apr 11 20265am Sat, Apr 11 20266am Sat, Apr 11 20267am Sat, Apr 11 20268am Sat, Apr 11 20269am Sat, Apr 11 202610am Sat, Apr 11 202611am Sat, Apr 11 202612pm Sat, Apr 11 20261pm Sat, Apr 11 20262pm Sat, Apr 11 20263pm Sat, Apr 11 20264pm Sat, Apr 11 20265pm Sat, Apr 11 20266pm Sat, Apr 11 20267pm Sat, Apr 11 20268pm Sat, Apr 11 20269pm Sat, Apr 11 202610pm Sat, Apr 11 202611pm Sat, Apr 11 202612am Sun, Apr 12 20261am Sun, Apr 12 20262am Sun, Apr 12 20263am Sun, Apr 12 20264am Sun, Apr 12 20265am Sun, Apr 12 20266am Sun, Apr 12 20267am Sun, Apr 12 20268am Sun, Apr 12 20269am Sun, Apr 12 202610am Sun, Apr 12 202611am Sun, Apr 12 202612pm Sun, Apr 12 20261pm Sun, Apr 12 20262pm Sun, Apr 12 20263pm Sun, Apr 12 20264pm Sun, Apr 12 20265pm Sun, Apr 12 20266pm Sun, Apr 12 20267pm Sun, Apr 12 20268pm Sun, Apr 12 20269pm Sun, Apr 12 202610pm Sun, Apr 12 202611pm Sun, Apr 12 202612am Mon, Apr 13 20261am Mon, Apr 13 20262am Mon, Apr 13 20263am Mon, Apr 13 20264am Mon, Apr 13 20265am Mon, Apr 13 20266am Mon, Apr 13 20267am Mon, Apr 13 20268am Mon, Apr 13 20269am Mon, Apr 13 202610am Mon, Apr 13 202611am Mon, Apr 13 202612pm Mon, Apr 13 20261pm Mon, Apr 13 20262pm Mon, Apr 13 20263pm Mon, Apr 13 20264pm Mon, Apr 13 20265pm Mon, Apr 13 20266pm Mon, Apr 13 20267pm Mon, Apr 13 20268pm Mon, Apr 13 20269pm Mon, Apr 13 202610pm Mon, Apr 13 202611pm Mon, Apr 13 202612am Tue, Apr 14 20261am Tue, Apr 14 20262am Tue, Apr 14 20263am Tue, Apr 14 20264am Tue, Apr 14 20265am Tue, Apr 14 20266am Tue, Apr 14 20267am Tue, Apr 14 20268am Tue, Apr 14 20269am Tue, Apr 14 202610am Tue, Apr 14 202611am Tue, Apr 14 202612pm Tue, Apr 14 20261pm Tue, Apr 14 20262pm Tue, Apr 14 20263pm Tue, Apr 14 20264pm Tue, Apr 14 20265pm Tue, Apr 14 20266pm Tue, Apr 14 20267pm Tue, Apr 14 20268pm Tue, Apr 14 20269pm Tue, Apr 14 202610pm Tue, Apr 14 202611pm Tue, Apr 14 202612am Wed, Apr 15 20261am Wed, Apr 15 20262am Wed, Apr 15 20263am Wed, Apr 15 2026

Date	04/10								04/11
Hour (EDT)	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15
Temperature (°F)	75	74	74	73	69	67	65	64	63	63	62	61	60	60	58	56	57	59	60	62	63	64	67	68
Dewpoint (°F)	44	44	43	43	43	44	43	43	43	43	43	45	47	49	48	48	47	44	43	41	40	38	38	37
Wind Chill (°F)
Surface Wind (mph)	8	9	8	7	7	7	7	7	7	6	6	6	7	8	9	9	10	10	10	10	9	9	8	8
Wind Dir	S	S	S	S	S	S	S	S	SW	W	W	W	NW	NW	NW	N	N	N	N	N	N	NW	NW	NW
Gust																18	20	20	20	18
Sky Cover (%)	9	8	5	21	33	22	28	39	39	48	36	45	32	27	14	13	24	14	5	6	5	6	6	4
Precipitation Potential (%)	0	0	0	0	1	2	3	4	4	4	4	3	2	2	1	1	0	0	0	0	0	0	0	0
Relative Humidity (%)	33	34	33	34	39	43	45	46	48	48	50	56	62	67	69	74	69	57	53	46	43	38	34	32
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date									04/12
Hour (EDT)	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15
Temperature (°F)	68	68	68	66	63	60	58	56	54	53	51	50	49	48	48	48	50	53	57	61	64	67	69	71
Dewpoint (°F)	36	35	35	35	36	35	36	37	37	37	37	37	37	37	37	37	37	37	38	39	40	41	42	43
Wind Chill (°F)												50	49	48	47	47	48
Surface Wind (mph)	7	7	6	5	3	2	2	2	2	2	2	2	2	2	3	3	5	6	6	7	8	9	10	11
Wind Dir	NW	NW	N	N	N	N	NE	NE	NE	E	E	E	E	E	E	E	E	E	SE	SE	SE	S	S	S
Gust																							18	20
Sky Cover (%)	8	6	4	7	8	6	5	9	8	8	7	11	15	19	20	22	23	25	27	29	33	38	42	42
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 (%)	31	29	29	32	36	39	44	49	52	54	59	61	63	65	65	65	61	54	49	44	41	39	37	36
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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