weather.gov

Home

News

Organization

Search for:  NWSAll NOAA

Point Forecast: Tysons Corner VA  38.93N 77.25W (Elev. 377 ft)	Last Update: 10:33 pm EDT May 18, 2022

[hide menu]

Weather Elements Weather/Precipitation Fire 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

48-Hour Period Starting: 10pm Wed, May 18 202211pm Wed, May 18 202212am Thu, May 19 20221am Thu, May 19 20222am Thu, May 19 20223am Thu, May 19 20224am Thu, May 19 20225am Thu, May 19 20226am Thu, May 19 20227am Thu, May 19 20228am Thu, May 19 20229am Thu, May 19 202210am Thu, May 19 202211am Thu, May 19 202212pm Thu, May 19 20221pm Thu, May 19 20222pm Thu, May 19 20223pm Thu, May 19 20224pm Thu, May 19 20225pm Thu, May 19 20226pm Thu, May 19 20227pm Thu, May 19 20228pm Thu, May 19 20229pm Thu, May 19 202210pm Thu, May 19 202211pm Thu, May 19 202212am Fri, May 20 20221am Fri, May 20 20222am Fri, May 20 20223am Fri, May 20 20224am Fri, May 20 20225am Fri, May 20 20226am Fri, May 20 20227am Fri, May 20 20228am Fri, May 20 20229am Fri, May 20 202210am Fri, May 20 202211am Fri, May 20 202212pm Fri, May 20 20221pm Fri, May 20 20222pm Fri, May 20 20223pm Fri, May 20 20224pm Fri, May 20 20225pm Fri, May 20 20226pm Fri, May 20 20227pm Fri, May 20 20228pm Fri, May 20 20229pm Fri, May 20 202210pm Fri, May 20 202211pm Fri, May 20 202212am Sat, May 21 20221am Sat, May 21 20222am Sat, May 21 20223am Sat, May 21 20224am Sat, May 21 20225am Sat, May 21 20226am Sat, May 21 20227am Sat, May 21 20228am Sat, May 21 20229am Sat, May 21 202210am Sat, May 21 202211am Sat, May 21 202212pm Sat, May 21 20221pm Sat, May 21 20222pm Sat, May 21 20223pm Sat, May 21 20224pm Sat, May 21 20225pm Sat, May 21 20226pm Sat, May 21 20227pm Sat, May 21 20228pm Sat, May 21 20229pm Sat, May 21 202210pm Sat, May 21 202211pm Sat, May 21 202212am Sun, May 22 20221am Sun, May 22 20222am Sun, May 22 20223am Sun, May 22 20224am Sun, May 22 20225am Sun, May 22 20226am Sun, May 22 20227am Sun, May 22 20228am Sun, May 22 20229am Sun, May 22 202210am Sun, May 22 202211am Sun, May 22 202212pm Sun, May 22 20221pm Sun, May 22 20222pm Sun, May 22 20223pm Sun, May 22 20224pm Sun, May 22 20225pm Sun, May 22 20226pm Sun, May 22 20227pm Sun, May 22 20228pm Sun, May 22 20229pm Sun, May 22 202210pm Sun, May 22 202211pm Sun, May 22 202212am Mon, May 23 20221am Mon, May 23 20222am Mon, May 23 20223am Mon, May 23 20224am Mon, May 23 20225am Mon, May 23 20226am Mon, May 23 20227am Mon, May 23 20228am Mon, May 23 20229am Mon, May 23 2022

Date	05/18		05/19
Hour (EDT)	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21
Temperature (°F)	65	64	64	63	63	62	61	61	62	62	65	67	70	73	76	78	80	81	82	82	82	80	76	73
Dewpoint (°F)	51	52	52	53	54	54	55	55	56	57	59	59	61	62	62	62	62	61	61	60	59	59	59	59
Heat Index (°F)															76	78	81	82	83	82	82	81	76
Surface Wind (mph)	6	6	6	7	6	6	6	6	6	6	5	6	7	8	8	8	8	8	8	8	7	6	2	2
Wind Dir	SE	SE	SE	SE	S	SE	SE	S	S	S	W	W	W	W	NW	NW	W	W	W	NW	W	NW	NW	NW
Gust
Sky Cover (%)	91	96	100	100	100	96	100	100	100	100	39	27	18	13	28	33	37	31	21	12	8	9	12	10
Precipitation Potential (%)	39	61	61	61	70	70	70	34	34	34	4	4	4	3	3	3	3	3	3	3	3	3	3	3
Relative Humidity (%)	60	65	65	70	72	75	81	81	81	84	81	75	73	68	62	58	54	51	49	47	46	49	56	62
Rain	Chc	Lkly	Lkly	Lkly	Chc	Chc	Chc	Chc	Chc	Chc	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date			05/20
Hour (EDT)	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21
Temperature (°F)	71	70	68	67	66	65	65	65	66	68	70	73	76	79	82	86	88	90	90	90	89	87	85	83
Dewpoint (°F)	59	59	59	59	59	59	59	59	59	60	61	62	64	65	65	65	65	65	66	66	66	65	65	65
Heat Index (°F)													76	79	84	88	90	92	93	93	92	89	87	85
Surface Wind (mph)	2	2	1	2	1	1	1	2	2	2	2	3	5	6	6	7	7	8	9	9	8	7	6	6
Wind Dir	NW	W	SW	SW	S	S	S	SE	SE	SE	SE	SE	S	S	S	S	S	S	S	S	S	S	S	S
Gust
Sky Cover (%)	9	3	8	8	13	17	24	28	31	38	41	37	30	26	23	18	15	15	15	15	19	26	29	27
Precipitation Potential (%)	3	3	3	3	3	3	3	3	3	3	2	2	2	2	2	2	6	6	6	6	6	6	7	7
Relative Humidity (%)	66	68	73	75	78	81	81	81	78	76	73	68	66	62	56	50	47	44	45	45	47	48	51	55
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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

---

Webmaster NOAA's National Weather Service Baltimore, MD/Washington, D.C.

Disclaimer Credits Glossary

Privacy Policy About Us Career Opportunities