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Point Forecast: Gaithersburg MD  39.13N 77.21W (Elev. 404 ft)	Last Update: 4:32 pm EDT Jun 18, 2021

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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: 6pm Fri, Jun 18 20217pm Fri, Jun 18 20218pm Fri, Jun 18 20219pm Fri, Jun 18 202110pm Fri, Jun 18 202111pm Fri, Jun 18 202112am Sat, Jun 19 20211am Sat, Jun 19 20212am Sat, Jun 19 20213am Sat, Jun 19 20214am Sat, Jun 19 20215am Sat, Jun 19 20216am Sat, Jun 19 20217am Sat, Jun 19 20218am Sat, Jun 19 20219am Sat, Jun 19 202110am Sat, Jun 19 202111am Sat, Jun 19 202112pm Sat, Jun 19 20211pm Sat, Jun 19 20212pm Sat, Jun 19 20213pm Sat, Jun 19 20214pm Sat, Jun 19 20215pm Sat, Jun 19 20216pm Sat, Jun 19 20217pm Sat, Jun 19 20218pm Sat, Jun 19 20219pm Sat, Jun 19 202110pm Sat, Jun 19 202111pm Sat, Jun 19 202112am Sun, Jun 20 20211am Sun, Jun 20 20212am Sun, Jun 20 20213am Sun, Jun 20 20214am Sun, Jun 20 20215am Sun, Jun 20 20216am Sun, Jun 20 20217am Sun, Jun 20 20218am Sun, Jun 20 20219am Sun, Jun 20 202110am Sun, Jun 20 202111am Sun, Jun 20 202112pm Sun, Jun 20 20211pm Sun, Jun 20 20212pm Sun, Jun 20 20213pm Sun, Jun 20 20214pm Sun, Jun 20 20215pm Sun, Jun 20 20216pm Sun, Jun 20 20217pm Sun, Jun 20 20218pm Sun, Jun 20 20219pm Sun, Jun 20 202110pm Sun, Jun 20 202111pm Sun, Jun 20 202112am Mon, Jun 21 20211am Mon, Jun 21 20212am Mon, Jun 21 20213am Mon, Jun 21 20214am Mon, Jun 21 20215am Mon, Jun 21 20216am Mon, Jun 21 20217am Mon, Jun 21 20218am Mon, Jun 21 20219am Mon, Jun 21 202110am Mon, Jun 21 202111am Mon, Jun 21 202112pm Mon, Jun 21 20211pm Mon, Jun 21 20212pm Mon, Jun 21 20213pm Mon, Jun 21 20214pm Mon, Jun 21 20215pm Mon, Jun 21 20216pm Mon, Jun 21 20217pm Mon, Jun 21 20218pm Mon, Jun 21 20219pm Mon, Jun 21 202110pm Mon, Jun 21 202111pm Mon, Jun 21 202112am Tue, Jun 22 20211am Tue, Jun 22 20212am Tue, Jun 22 20213am Tue, Jun 22 20214am Tue, Jun 22 20215am Tue, Jun 22 20216am Tue, Jun 22 20217am Tue, Jun 22 20218am Tue, Jun 22 20219am Tue, Jun 22 202110am Tue, Jun 22 202111am Tue, Jun 22 202112pm Tue, Jun 22 20211pm Tue, Jun 22 20212pm Tue, Jun 22 20213pm Tue, Jun 22 20214pm Tue, Jun 22 20215pm Tue, Jun 22 20216pm Tue, Jun 22 20217pm Tue, Jun 22 20218pm Tue, Jun 22 20219pm Tue, Jun 22 202110pm Tue, Jun 22 202111pm Tue, Jun 22 202112am Wed, Jun 23 20211am Wed, Jun 23 20212am Wed, Jun 23 20213am Wed, Jun 23 20214am Wed, Jun 23 20215am Wed, Jun 23 2021

Date	06/18						06/19
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	81	79	78	77	75	75	74	73	72	71	71	70	70	73	77	80	82	83	84	84	83	83	84
Dewpoint (°F)	58	58	58	59	59	59	59	59	60	61	62	62	62	64	65	66	67	68	68	68	68	68	67	68
Heat Index (°F)	82	81	79	78	77	75	75									77	82	85	86	87	87	86	86	87
Surface Wind (mph)	10	9	8	8	9	8	9	9	8	7	6	6	6	6	7	8	10	11	11	11	11	11	11	11
Wind Dir	S	S	S	S	S	S	S	SW	SW	SW	SW	SW	SW	W	W	W	W	W	W	W	W	W	W	W
Gust
Sky Cover (%)	53	50	56	62	67	73	79	49	86	76	83	82	62	57	44	70	42	44	67	76	47	49	73	54
Precipitation Potential (%)	7	7	7	7	7	24	24	24	25	25	25	25	25	25	25	25	25	25	25	25	51	51	51	51
Relative Humidity (%)	44	46	49	52	54	58	58	59	64	68	73	73	76	81	76	69	65	63	61	59	59	61	59	59
Rain	--	--	--	--	--	SChc	SChc	SChc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc
Thunder	--	--	--	--	--	SChc	SChc	SChc	Chc	Chc	Chc	SChc	SChc	SChc	--	--	--	Chc	Chc	Chc	Chc	Chc	Chc	Chc
Date							06/20
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)	84	83	81	79	76	74	73	72	71	70	70	70	70	71	73	76	80	83	85	87	88	88	88	87
Dewpoint (°F)	68	67	67	68	68	69	69	68	68	68	67	67	67	68	69	70	71	71	71	70	70	70	70	70
Heat Index (°F)	87	86	83	79	76											76	83	88	90	92	93	93	93	92
Surface Wind (mph)	10	9	8	7	6	5	3	3	3	3	3	3	5	5	6	6	7	8	8	8	8	8	8	8
Wind Dir	W	W	W	W	W	W	SW	W	W	W	W	W	W	W	W	W	W	W	W	SW	SW	SW	SW	SW
Gust
Sky Cover (%)	56	41	44	48	53	57	62	66	65	65	64	63	60	55	52	51	48	46	46	45	44	45	48	49
Precipitation Potential (%)	51	51	41	41	41	41	41	41	23	23	23	23	23	23	28	28	28	28	28	28	33	33	33	33
Relative Humidity (%)	59	59	63	69	76	84	87	87	90	93	90	90	90	90	87	82	74	67	63	57	55	55	55	57
Rain	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	SChc	SChc	SChc	SChc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc
Thunder	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	SChc	SChc	SChc	SChc	--	--	--	SChc	SChc	SChc	Chc	Chc	Chc	Chc

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