weather.gov

Home

News

Organization

Search for:  NWSAll NOAA

Point Forecast: Fairfax VA  38.85N 77.29W (Elev. 400 ft)	Last Update: 10:48 pm EDT Oct 18, 2018

[hide menu]  |  Font Size: A A A

Weather Elements Weather/Precipitation Fire 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 Haines Index Lightning Activity Level Trans. Wind  ktmphkm/hm/s Vent Rate (x1000 mph-ft)

48-Hour Period Starting: 12am Fri, Oct 19 20181am Fri, Oct 19 20182am Fri, Oct 19 20183am Fri, Oct 19 20184am Fri, Oct 19 20185am Fri, Oct 19 20186am Fri, Oct 19 20187am Fri, Oct 19 20188am Fri, Oct 19 20189am Fri, Oct 19 201810am Fri, Oct 19 201811am Fri, Oct 19 201812pm Fri, Oct 19 20181pm Fri, Oct 19 20182pm Fri, Oct 19 20183pm Fri, Oct 19 20184pm Fri, Oct 19 20185pm Fri, Oct 19 20186pm Fri, Oct 19 20187pm Fri, Oct 19 20188pm Fri, Oct 19 20189pm Fri, Oct 19 201810pm Fri, Oct 19 201811pm Fri, Oct 19 201812am Sat, Oct 20 20181am Sat, Oct 20 20182am Sat, Oct 20 20183am Sat, Oct 20 20184am Sat, Oct 20 20185am Sat, Oct 20 20186am Sat, Oct 20 20187am Sat, Oct 20 20188am Sat, Oct 20 20189am Sat, Oct 20 201810am Sat, Oct 20 201811am Sat, Oct 20 201812pm Sat, Oct 20 20181pm Sat, Oct 20 20182pm Sat, Oct 20 20183pm Sat, Oct 20 20184pm Sat, Oct 20 20185pm Sat, Oct 20 20186pm Sat, Oct 20 20187pm Sat, Oct 20 20188pm Sat, Oct 20 20189pm Sat, Oct 20 201810pm Sat, Oct 20 201811pm Sat, Oct 20 201812am Sun, Oct 21 20181am Sun, Oct 21 20182am Sun, Oct 21 20183am Sun, Oct 21 20184am Sun, Oct 21 20185am Sun, Oct 21 20186am Sun, Oct 21 20187am Sun, Oct 21 20188am Sun, Oct 21 20189am Sun, Oct 21 201810am Sun, Oct 21 201811am Sun, Oct 21 201812pm Sun, Oct 21 20181pm Sun, Oct 21 20182pm Sun, Oct 21 20183pm Sun, Oct 21 20184pm Sun, Oct 21 20185pm Sun, Oct 21 20186pm Sun, Oct 21 20187pm Sun, Oct 21 20188pm Sun, Oct 21 20189pm Sun, Oct 21 201810pm Sun, Oct 21 201811pm Sun, Oct 21 201812am Mon, Oct 22 20181am Mon, Oct 22 20182am Mon, Oct 22 20183am Mon, Oct 22 20184am Mon, Oct 22 20185am Mon, Oct 22 20186am Mon, Oct 22 20187am Mon, Oct 22 20188am Mon, Oct 22 20189am Mon, Oct 22 201810am Mon, Oct 22 201811am Mon, Oct 22 201812pm Mon, Oct 22 20181pm Mon, Oct 22 20182pm Mon, Oct 22 20183pm Mon, Oct 22 20184pm Mon, Oct 22 20185pm Mon, Oct 22 20186pm Mon, Oct 22 20187pm Mon, Oct 22 20188pm Mon, Oct 22 20189pm Mon, Oct 22 201810pm Mon, Oct 22 201811pm Mon, Oct 22 201812am Tue, Oct 23 20181am Tue, Oct 23 20182am Tue, Oct 23 20183am Tue, Oct 23 20184am Tue, Oct 23 20185am Tue, Oct 23 20186am Tue, Oct 23 20187am Tue, Oct 23 20188am Tue, Oct 23 20189am Tue, Oct 23 201810am Tue, Oct 23 201811am Tue, Oct 23 2018

Date	10/19
Hour (EDT)	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Temperature (°F)	40	40	40	40	39	39	36	34	38	43	47	52	55	57	59	60	60	60	59	57	56	55	55	54
Dewpoint (°F)	37	36	36	36	35	35	35	34	35	36	38	39	40	41	42	42	43	43	43	44	44	45	45	46
Wind Chill (°F)	38	38	38	38	37	37	33	31	36	40	44
Surface Wind (mph)	3	3	3	3	3	3	3	3	3	5	6	7	8	9	10	11	11	11	11	10	9	8	8	8
Wind Dir	W	W	W	W	W	SW	SW	SW	SW	SW	SW	SW	S	S	S	S	S	S	S	S	S	S	S	S
Gust																	21	21	20
Sky Cover (%)	1	0	0	0	1	1	1	2	2	2	3	3	5	10	12	17	27	32	39	54	61	67	80	86
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	14	14	14	32
Relative Humidity (%)	79	85	85	85	85	85	96	100	89	76	71	61	57	55	53	51	53	53	55	62	64	69	69	74
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	Chc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date	10/20
Hour (EDT)	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Temperature (°F)	54	53	53	53	53	52	52	53	53	55	58	60	62	63	64	64	63	62	60	56	54	52	51	50
Dewpoint (°F)	47	47	48	49	50	51	51	51	51	51	52	52	52	52	51	50	49	48	47	47	46	45	45	44
Wind Chill (°F)																								46
Surface Wind (mph)	8	8	8	9	10	10	9	8	7	7	7	8	9	9	10	11	11	11	10	10	9	9	9	10
Wind Dir	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	W	W	W	W	W	W	W	W	W	W	W	NW	NW
Gust																		20
Sky Cover (%)	87	88	88	90	95	97	94	89	86	83	78	75	73	70	68	63	54	49	50	51	52	51	48	46
Precipitation Potential (%)	32	32	60	60	60	60	60	60	26	26	26	14	14	14	8	8	8	8	8	8	8	8	8	8
Relative Humidity (%)	77	80	83	86	89	96	96	93	93	86	80	75	70	67	63	60	60	60	62	72	74	77	80	80
Rain	Chc	Chc	Lkly	Lkly	Lkly	Lkly	Lkly	Lkly	Chc	Chc	Chc	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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