Point Forecast: Dulles VA  38.92N 77.36W (Elev. 400 ft)	Last Update: 4:53 pm EDT Oct 13, 2026

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Weather Elements Fire Weather Aviation Weather Temperature (°F) Dewpoint (°F) Heat Index (°F) Surface Wind  ktmphkm/hm/s Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder 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: 6pm Tue, Oct 13 20267pm Tue, Oct 13 20268pm Tue, Oct 13 20269pm Tue, Oct 13 202610pm Tue, Oct 13 202611pm Tue, Oct 13 202612am Wed, Oct 14 20261am Wed, Oct 14 20262am Wed, Oct 14 20263am Wed, Oct 14 20264am Wed, Oct 14 20265am Wed, Oct 14 20266am Wed, Oct 14 20267am Wed, Oct 14 20268am Wed, Oct 14 20269am Wed, Oct 14 202610am Wed, Oct 14 202611am Wed, Oct 14 202612pm Wed, Oct 14 20261pm Wed, Oct 14 20262pm Wed, Oct 14 20263pm Wed, Oct 14 20264pm Wed, Oct 14 20265pm Wed, Oct 14 20266pm Wed, Oct 14 20267pm Wed, Oct 14 20268pm Wed, Oct 14 20269pm Wed, Oct 14 202610pm Wed, Oct 14 202611pm Wed, Oct 14 202612am Thu, Oct 15 20261am Thu, Oct 15 20262am Thu, Oct 15 20263am Thu, Oct 15 20264am Thu, Oct 15 20265am Thu, Oct 15 20266am Thu, Oct 15 20267am Thu, Oct 15 20268am Thu, Oct 15 20269am Thu, Oct 15 202610am Thu, Oct 15 202611am Thu, Oct 15 202612pm Thu, Oct 15 20261pm Thu, Oct 15 20262pm Thu, Oct 15 20263pm Thu, Oct 15 20264pm Thu, Oct 15 20265pm Thu, Oct 15 20266pm Thu, Oct 15 20267pm Thu, Oct 15 20268pm Thu, Oct 15 20269pm Thu, Oct 15 202610pm Thu, Oct 15 202611pm Thu, Oct 15 202612am Fri, Oct 16 20261am Fri, Oct 16 20262am Fri, Oct 16 20263am Fri, Oct 16 20264am Fri, Oct 16 20265am Fri, Oct 16 20266am Fri, Oct 16 20267am Fri, Oct 16 20268am Fri, Oct 16 20269am Fri, Oct 16 202610am Fri, Oct 16 202611am Fri, Oct 16 202612pm Fri, Oct 16 20261pm Fri, Oct 16 20262pm Fri, Oct 16 20263pm Fri, Oct 16 20264pm Fri, Oct 16 20265pm Fri, Oct 16 20266pm Fri, Oct 16 20267pm Fri, Oct 16 20268pm Fri, Oct 16 20269pm Fri, Oct 16 202610pm Fri, Oct 16 202611pm Fri, Oct 16 202612am Sat, Oct 17 20261am Sat, Oct 17 20262am Sat, Oct 17 20263am Sat, Oct 17 20264am Sat, Oct 17 20265am Sat, Oct 17 20266am Sat, Oct 17 20267am Sat, Oct 17 20268am Sat, Oct 17 20269am Sat, Oct 17 202610am Sat, Oct 17 202611am Sat, Oct 17 202612pm Sat, Oct 17 20261pm Sat, Oct 17 20262pm Sat, Oct 17 20263pm Sat, Oct 17 20264pm Sat, Oct 17 20265pm Sat, Oct 17 20266pm Sat, Oct 17 20267pm Sat, Oct 17 20268pm Sat, Oct 17 20269pm Sat, Oct 17 202610pm Sat, Oct 17 202611pm Sat, Oct 17 202612am Sun, Oct 18 20261am Sun, Oct 18 20262am Sun, Oct 18 20263am Sun, Oct 18 20264am Sun, Oct 18 20265am Sun, Oct 18 2026

Date	10/13						10/14
Hour (EDT)	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17
Temperature (°F)	76	74	71	70	70	69	68	68	67	67	66	65	65	65	65	69	75	79	82	84	84	84	85	84
Dewpoint (°F)	64	64	62	62	63	63	63	63	63	62	61	61	60	60	61	62	63	64	65	66	66	67	67	67
Heat Index (°F)	76																75	79	84	86	86	87	88	87
Surface Wind (mph)	8	8	7	8	7	7	6	6	5	5	5	5	3	3	3	3	5	6	6	6	6	6	6	5
Wind Dir	S	S	S	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	W	W	W	W	W	W	W
Gust
Sky Cover (%)	23	4	2	23	4	4	2	2	3	2	4	10	12	12	22	19	23	28	23	25	30	26	31	35
Precipitation Potential (%)	2	2	1	2	2	2	2	1	1	1	1	1	1	2	1	1	2	2	2	2	2	1	2	5
Relative Humidity (%)	66	71	73	76	78	81	84	84	87	84	84	87	84	84	87	78	66	60	56	55	55	57	55	57
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date							10/15
Hour (EDT)	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17
Temperature (°F)	82	80	76	74	73	72	71	70	69	67	66	64	63	63	62	61	62	62	63	63	63	63	62	61
Dewpoint (°F)	67	67	67	67	67	68	67	67	66	64	63	61	61	59	58	59	59	59	59	59	59	59	60	60
Heat Index (°F)	85	82	76
Surface Wind (mph)	5	5	3	5	5	6	5	6	7	7	7	8	7	8	7	7	7	7	6	6	5	3	3	3
Wind Dir	SW	W	W	NW	NW	NW	N	N	N	N	N	N	N	NE	NE	NE	NE	NE	NE	NE	NE	E	E	E
Gust
Sky Cover (%)	35	47	62	57	57	59	61	63	71	79	85	86	87	85	83	87	85	81	81	83	84	86	88	89
Precipitation Potential (%)	6	10	22	26	28	22	16	16	21	20	14	20	24	27	46	48	38	44	43	46	44	44	44	44
Relative Humidity (%)	61	65	74	79	81	87	87	90	90	90	90	90	93	87	87	93	90	90	87	87	87	87	93	97
Rain	--	--	SChc	Chc	Chc	SChc	SChc	SChc	SChc	SChc	--	SChc	SChc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc
Thunder	--	--	SChc	SChc	SChc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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