Point Forecast: 3 Miles SSE Chantilly VA  38.84N 77.38W (Elev. 449 ft)	Last Update: 8:35 am EDT Jun 12, 2024

[hide menu]

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: 8am Wed, Jun 12 20249am Wed, Jun 12 202410am Wed, Jun 12 202411am Wed, Jun 12 202412pm Wed, Jun 12 20241pm Wed, Jun 12 20242pm Wed, Jun 12 20243pm Wed, Jun 12 20244pm Wed, Jun 12 20245pm Wed, Jun 12 20246pm Wed, Jun 12 20247pm Wed, Jun 12 20248pm Wed, Jun 12 20249pm Wed, Jun 12 202410pm Wed, Jun 12 202411pm Wed, Jun 12 202412am Thu, Jun 13 20241am Thu, Jun 13 20242am Thu, Jun 13 20243am Thu, Jun 13 20244am Thu, Jun 13 20245am Thu, Jun 13 20246am Thu, Jun 13 20247am Thu, Jun 13 20248am Thu, Jun 13 20249am Thu, Jun 13 202410am Thu, Jun 13 202411am Thu, Jun 13 202412pm Thu, Jun 13 20241pm Thu, Jun 13 20242pm Thu, Jun 13 20243pm Thu, Jun 13 20244pm Thu, Jun 13 20245pm Thu, Jun 13 20246pm Thu, Jun 13 20247pm Thu, Jun 13 20248pm Thu, Jun 13 20249pm Thu, Jun 13 202410pm Thu, Jun 13 202411pm Thu, Jun 13 202412am Fri, Jun 14 20241am Fri, Jun 14 20242am Fri, Jun 14 20243am Fri, Jun 14 20244am Fri, Jun 14 20245am Fri, Jun 14 20246am Fri, Jun 14 20247am Fri, Jun 14 20248am Fri, Jun 14 20249am Fri, Jun 14 202410am Fri, Jun 14 202411am Fri, Jun 14 202412pm Fri, Jun 14 20241pm Fri, Jun 14 20242pm Fri, Jun 14 20243pm Fri, Jun 14 20244pm Fri, Jun 14 20245pm Fri, Jun 14 20246pm Fri, Jun 14 20247pm Fri, Jun 14 20248pm Fri, Jun 14 20249pm Fri, Jun 14 202410pm Fri, Jun 14 202411pm Fri, Jun 14 202412am Sat, Jun 15 20241am Sat, Jun 15 20242am Sat, Jun 15 20243am Sat, Jun 15 20244am Sat, Jun 15 20245am Sat, Jun 15 20246am Sat, Jun 15 20247am Sat, Jun 15 20248am Sat, Jun 15 20249am Sat, Jun 15 202410am Sat, Jun 15 202411am Sat, Jun 15 202412pm Sat, Jun 15 20241pm Sat, Jun 15 20242pm Sat, Jun 15 20243pm Sat, Jun 15 20244pm Sat, Jun 15 20245pm Sat, Jun 15 20246pm Sat, Jun 15 20247pm Sat, Jun 15 20248pm Sat, Jun 15 20249pm Sat, Jun 15 202410pm Sat, Jun 15 202411pm Sat, Jun 15 202412am Sun, Jun 16 20241am Sun, Jun 16 20242am Sun, Jun 16 20243am Sun, Jun 16 20244am Sun, Jun 16 20245am Sun, Jun 16 20246am Sun, Jun 16 20247am Sun, Jun 16 20248am Sun, Jun 16 20249am Sun, Jun 16 202410am Sun, Jun 16 202411am Sun, Jun 16 202412pm Sun, Jun 16 20241pm Sun, Jun 16 20242pm Sun, Jun 16 20243pm Sun, Jun 16 20244pm Sun, Jun 16 20245pm Sun, Jun 16 20246pm Sun, Jun 16 20247pm Sun, Jun 16 2024

Date	06/12																06/13
Hour (EDT)	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07
Temperature (°F)	60	64	69	73	75	76	78	78	79	79	78	78	76	73	70	68	67	66	66	65	63	63	63	65
Dewpoint (°F)	54	53	53	53	53	54	54	54	54	55	56	57	59	59	60	61	61	61	61	61	61	61	61	62
Heat Index (°F)					75	76	78	78	79	79	78	78	76
Surface Wind (mph)	3	3	5	5	6	6	6	6	6	5	5	5	3	5	5	5	5	3	3	3	3	3	3	3
Wind Dir	W	W	W	W	W	SW	SW	SW	SW	SW	S	S	S	S	S	S	S	S	S	S	S	S	S	S
Gust
Sky Cover (%)	18	21	24	20	16	32	48	48	55	40	20	15	15	14	12	17	27	17	18	20	28	38	47	48
Precipitation Potential (%)	2	2	2	2	2	2	2	2	3	5	5	6	7	7	7	7	8	8	7	5	3	3	3	3
Relative Humidity (%)	81	67	57	49	46	46	43	43	42	44	47	48	56	62	71	78	81	84	84	87	93	93	93	90
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date																	06/14
Hour (EDT)	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07
Temperature (°F)	68	72	75	78	80	82	83	85	85	85	84	82	80	78	76	74	73	72	71	70	69	68	68	70
Dewpoint (°F)	63	64	65	65	64	64	63	63	64	64	65	65	66	66	66	66	65	65	64	63	63	63	63	64
Heat Index (°F)			75	78	82	83	84	86	86	86	86	84	82	78	76
Surface Wind (mph)	3	5	5	6	7	7	8	9	9	9	9	9	9	8	7	7	7	7	7	6	6	6	6	6
Wind Dir	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S
Gust
Sky Cover (%)	43	33	42	54	54	53	59	56	47	40	37	39	46	46	45	42	43	31	25	23	26	27	30	30
Precipitation Potential (%)	2	2	2	11	11	11	16	16	16	14	14	14	2	2	2	2	2	2	0	0	0	0	0	0
Relative Humidity (%)	84	76	71	64	58	55	51	48	50	50	53	56	62	67	71	76	76	79	79	78	81	84	84	81
Rain	--	--	--	--	--	--	SChc	SChc	SChc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

International System of Units Forecast Discussion 7-Day Forecast Hourly Weather Graph Hazardous Weather Briefing Page Past Weather Information Interactive Forecast Map Home