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Point Forecast: Gaithersburg MD  39.13N 77.21W (Elev. 123 m)	Last Update: 7:32 pm EDT Jul 28, 2021

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Weather Elements Weather/Precipitation Fire Weather Temperature (°C) Dewpoint (°C) Heat Index (°C) 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-m) Atmospheric Dispersion Index Low Visibility Occurrence Risk Index

48-Hour Period Starting: 8pm Wed, Jul 28 20219pm Wed, Jul 28 202110pm Wed, Jul 28 202111pm Wed, Jul 28 202112am Thu, Jul 29 20211am Thu, Jul 29 20212am Thu, Jul 29 20213am Thu, Jul 29 20214am Thu, Jul 29 20215am Thu, Jul 29 20216am Thu, Jul 29 20217am Thu, Jul 29 20218am Thu, Jul 29 20219am Thu, Jul 29 202110am Thu, Jul 29 202111am Thu, Jul 29 202112pm Thu, Jul 29 20211pm Thu, Jul 29 20212pm Thu, Jul 29 20213pm Thu, Jul 29 20214pm Thu, Jul 29 20215pm Thu, Jul 29 20216pm Thu, Jul 29 20217pm Thu, Jul 29 20218pm Thu, Jul 29 20219pm Thu, Jul 29 202110pm Thu, Jul 29 202111pm Thu, Jul 29 202112am Fri, Jul 30 20211am Fri, Jul 30 20212am Fri, Jul 30 20213am Fri, Jul 30 20214am Fri, Jul 30 20215am Fri, Jul 30 20216am Fri, Jul 30 20217am Fri, Jul 30 20218am Fri, Jul 30 20219am Fri, Jul 30 202110am Fri, Jul 30 202111am Fri, Jul 30 202112pm Fri, Jul 30 20211pm Fri, Jul 30 20212pm Fri, Jul 30 20213pm Fri, Jul 30 20214pm Fri, Jul 30 20215pm Fri, Jul 30 20216pm Fri, Jul 30 20217pm Fri, Jul 30 20218pm Fri, Jul 30 20219pm Fri, Jul 30 202110pm Fri, Jul 30 202111pm Fri, Jul 30 202112am Sat, Jul 31 20211am Sat, Jul 31 20212am Sat, Jul 31 20213am Sat, Jul 31 20214am Sat, Jul 31 20215am Sat, Jul 31 20216am Sat, Jul 31 20217am Sat, Jul 31 20218am Sat, Jul 31 20219am Sat, Jul 31 202110am Sat, Jul 31 202111am Sat, Jul 31 202112pm Sat, Jul 31 20211pm Sat, Jul 31 20212pm Sat, Jul 31 20213pm Sat, Jul 31 20214pm Sat, Jul 31 20215pm Sat, Jul 31 20216pm Sat, Jul 31 20217pm Sat, Jul 31 20218pm Sat, Jul 31 20219pm Sat, Jul 31 202110pm Sat, Jul 31 202111pm Sat, Jul 31 202112am Sun, Aug 1 20211am Sun, Aug 1 20212am Sun, Aug 1 20213am Sun, Aug 1 20214am Sun, Aug 1 20215am Sun, Aug 1 20216am Sun, Aug 1 20217am Sun, Aug 1 20218am Sun, Aug 1 20219am Sun, Aug 1 202110am Sun, Aug 1 202111am Sun, Aug 1 202112pm Sun, Aug 1 20211pm Sun, Aug 1 20212pm Sun, Aug 1 20213pm Sun, Aug 1 20214pm Sun, Aug 1 20215pm Sun, Aug 1 20216pm Sun, Aug 1 20217pm Sun, Aug 1 20218pm Sun, Aug 1 20219pm Sun, Aug 1 202110pm Sun, Aug 1 202111pm Sun, Aug 1 202112am Mon, Aug 2 20211am Mon, Aug 2 20212am Mon, Aug 2 20213am Mon, Aug 2 20214am Mon, Aug 2 20215am Mon, Aug 2 20216am Mon, Aug 2 20217am Mon, Aug 2 2021

Date	07/28				07/29
Hour (EDT)	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19
Temperature (°C)	28	26	24	24	23	23	22	22	22	22	21	22	23	24	26	27	28	29	30	29	29	29	28	27
Dewpoint (°C)	19	20	20	20	20	21	21	21	21	21	21	21	21	22	22	22	22	21	21	21	21	21	21	21
Heat Index (°C)	29	26	24	24										24	26	29	31	32	32	32	32	31	30	29
Surface Wind (mph)	7	6	5	5	3	3	2	2	2	2	2	2	2	2	5	6	6	7	7	8	8	7	7	7
Wind Dir	E	E	E	E	E	SE	SE	SE	SE	SE	SE	SE	S	S	SW	SW	SW	SW	SW	SW	SW	SW	SW	S
Gust
Sky Cover (%)	29	64	67	76	58	61	62	53	76	76	78	74	66	59	51	44	36	65	71	71	74	83	81	69
Precipitation Potential (%)	42	42	29	29	21	21	4	4	7	8	5	3	3	2	2	3	5	7	16	26	34	44	44	39
Relative Humidity (%)	61	71	76	79	84	87	90	90	93	93	97	93	90	85	79	72	67	61	57	61	59	61	67	69
Rain	Chc	Chc	Chc	Chc	SChc	SChc	--	--	--	--	--	--	--	--	--	--	--	--	SChc	Chc	Chc	Chc	Chc	Chc
Thunder	Chc	Chc	Chc	Chc	SChc	SChc	--	--	--	--	--	--	--	--	--	--	--	--	SChc	Chc	Chc	Chc	Chc	Chc
Date					07/30
Hour (EDT)	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19
Temperature (°C)	27	26	25	24	24	23	23	23	22	22	22	22	23	24	26	27	27	28	28	29	29	28	28	26
Dewpoint (°C)	21	22	22	22	22	21	21	21	21	21	21	21	20	20	20	19	19	18	17	16	16	15	14	14
Heat Index (°C)	28	26	25	24	24									24	26	28	28	28	29	29	29	28	28	26
Surface Wind (mph)	6	5	6	5	5	6	5	3	5	6	7	7	8	9	10	11	13	13	13	13	13	11	10	10
Wind Dir	S	SW	SW	W	W	W	W	W	W	W	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW
Gust
Sky Cover (%)	62	49	47	40	19	14	11	23	20	17	16	14	13	15	18	20	21	23	23	23	22	21	18	10
Precipitation Potential (%)	29	29	29	29	29	29	4	4	4	4	4	4	3	3	3	3	3	3	0	0	0	0	0	0
Relative Humidity (%)	72	79	82	85	87	87	87	90	93	93	90	90	84	79	71	65	60	55	49	46	44	44	44	49
Rain	Chc	Chc	Chc	Chc	Chc	Chc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	Chc	Chc	Chc	Chc	Chc	Chc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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