Point Forecast: Ashburn VA  39.05N 77.49W (Elev. 299 ft)	Last Update: 4:29 am EDT May 25, 2024

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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 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: 5am Sat, May 25 20246am Sat, May 25 20247am Sat, May 25 20248am Sat, May 25 20249am Sat, May 25 202410am Sat, May 25 202411am Sat, May 25 202412pm Sat, May 25 20241pm Sat, May 25 20242pm Sat, May 25 20243pm Sat, May 25 20244pm Sat, May 25 20245pm Sat, May 25 20246pm Sat, May 25 20247pm Sat, May 25 20248pm Sat, May 25 20249pm Sat, May 25 202410pm Sat, May 25 202411pm Sat, May 25 202412am Sun, May 26 20241am Sun, May 26 20242am Sun, May 26 20243am Sun, May 26 20244am Sun, May 26 20245am Sun, May 26 20246am Sun, May 26 20247am Sun, May 26 20248am Sun, May 26 20249am Sun, May 26 202410am Sun, May 26 202411am Sun, May 26 202412pm Sun, May 26 20241pm Sun, May 26 20242pm Sun, May 26 20243pm Sun, May 26 20244pm Sun, May 26 20245pm Sun, May 26 20246pm Sun, May 26 20247pm Sun, May 26 20248pm Sun, May 26 20249pm Sun, May 26 202410pm Sun, May 26 202411pm Sun, May 26 202412am Mon, May 27 20241am Mon, May 27 20242am Mon, May 27 20243am Mon, May 27 20244am Mon, May 27 20245am Mon, May 27 20246am Mon, May 27 20247am Mon, May 27 20248am Mon, May 27 20249am Mon, May 27 202410am Mon, May 27 202411am Mon, May 27 202412pm Mon, May 27 20241pm Mon, May 27 20242pm Mon, May 27 20243pm Mon, May 27 20244pm Mon, May 27 20245pm Mon, May 27 20246pm Mon, May 27 20247pm Mon, May 27 20248pm Mon, May 27 20249pm Mon, May 27 202410pm Mon, May 27 202411pm Mon, May 27 202412am Tue, May 28 20241am Tue, May 28 20242am Tue, May 28 20243am Tue, May 28 20244am Tue, May 28 20245am Tue, May 28 20246am Tue, May 28 20247am Tue, May 28 20248am Tue, May 28 20249am Tue, May 28 202410am Tue, May 28 202411am Tue, May 28 202412pm Tue, May 28 20241pm Tue, May 28 20242pm Tue, May 28 20243pm Tue, May 28 20244pm Tue, May 28 20245pm Tue, May 28 20246pm Tue, May 28 20247pm Tue, May 28 20248pm Tue, May 28 20249pm Tue, May 28 202410pm Tue, May 28 202411pm Tue, May 28 202412am Wed, May 29 20241am Wed, May 29 20242am Wed, May 29 20243am Wed, May 29 20244am Wed, May 29 20245am Wed, May 29 20246am Wed, May 29 20247am Wed, May 29 20248am Wed, May 29 20249am Wed, May 29 202410am Wed, May 29 202411am Wed, May 29 202412pm Wed, May 29 20241pm Wed, May 29 20242pm Wed, May 29 20243pm Wed, May 29 20244pm Wed, May 29 2024

Date	05/25																			05/26
Hour (EDT)	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04
Temperature (°F)	63	63	65	69	73	77	81	83	84	84	85	85	85	85	83	79	76	74	73	72	70	69	68	67
Dewpoint (°F)	62	62	63	66	66	66	65	64	63	63	63	63	64	64	65	65	66	66	66	66	66	66	65	65
Heat Index (°F)						77	83	84	85	85	86	86	86	86	85	79	76
Surface Wind (mph)	1	1	1	0	1	2	2	3	5	6	6	6	6	6	6	5	5	5	3	2	2	2	2	2
Wind Dir	NW	N	NW	N	S	S	S	S	S	S	S	S	S	S	S	S	W	SE	SE	E	SE	S	SW	W
Gust
Sky Cover (%)	31	34	38	41	39	37	35	39	43	47	45	44	42	44	47	49	60	71	82	70	57	45	46	46
Precipitation Potential (%)	2	2	2	2	2	2	2	2	2	20	20	20	30	30	30	40	40	40	30	30	30	15	15	15
Relative Humidity (%)	97	97	93	90	79	69	58	53	49	49	48	48	50	50	55	62	71	76	79	81	87	90	90	93
Rain	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	SChc
Thunder	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc
Date																				05/27
Hour (EDT)	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04
Temperature (°F)	67	67	68	70	72	75	78	80	82	83	84	84	83	82	80	78	76	74	72	71	70	70	69	69
Dewpoint (°F)	65	65	66	67	67	67	68	68	68	68	68	68	68	68	69	69	69	69	69	69	68	68	68	68
Heat Index (°F)						75	78	83	85	86	87	87	86	85	83	78	76
Surface Wind (mph)	2	2	2	2	2	2	2	2	3	3	5	6	6	6	5	5	5	5	5	5	5	5	5	6
Wind Dir	W	NW	N	N	N	NE	E	E	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	S
Gust
Sky Cover (%)	47	44	41	38	26	31	35	36	37	38	42	51	55	57	62	64	66	69	70	73	78	80	80	79
Precipitation Potential (%)	2	2	2	8	8	8	8	8	8	25	25	25	25	25	25	34	34	34	34	34	34	48	48	48
Relative Humidity (%)	93	93	93	90	84	76	71	67	63	61	59	59	61	63	69	74	79	84	90	93	93	93	97	97
Rain	--	--	--	--	--	--	--	--	--	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc
Thunder	--	--	--	--	--	--	--	--	--	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc

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