Point Forecast: Gaithersburg MD  39.13N 77.21W (Elev. 404 ft)	Last Update: 6:23 pm EDT Sep 15, 2024

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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: 7pm Sun, Sep 15 20248pm Sun, Sep 15 20249pm Sun, Sep 15 202410pm Sun, Sep 15 202411pm Sun, Sep 15 202412am Mon, Sep 16 20241am Mon, Sep 16 20242am Mon, Sep 16 20243am Mon, Sep 16 20244am Mon, Sep 16 20245am Mon, Sep 16 20246am Mon, Sep 16 20247am Mon, Sep 16 20248am Mon, Sep 16 20249am Mon, Sep 16 202410am Mon, Sep 16 202411am Mon, Sep 16 202412pm Mon, Sep 16 20241pm Mon, Sep 16 20242pm Mon, Sep 16 20243pm Mon, Sep 16 20244pm Mon, Sep 16 20245pm Mon, Sep 16 20246pm Mon, Sep 16 20247pm Mon, Sep 16 20248pm Mon, Sep 16 20249pm Mon, Sep 16 202410pm Mon, Sep 16 202411pm Mon, Sep 16 202412am Tue, Sep 17 20241am Tue, Sep 17 20242am Tue, Sep 17 20243am Tue, Sep 17 20244am Tue, Sep 17 20245am Tue, Sep 17 20246am Tue, Sep 17 20247am Tue, Sep 17 20248am Tue, Sep 17 20249am Tue, Sep 17 202410am Tue, Sep 17 202411am Tue, Sep 17 202412pm Tue, Sep 17 20241pm Tue, Sep 17 20242pm Tue, Sep 17 20243pm Tue, Sep 17 20244pm Tue, Sep 17 20245pm Tue, Sep 17 20246pm Tue, Sep 17 20247pm Tue, Sep 17 20248pm Tue, Sep 17 20249pm Tue, Sep 17 202410pm Tue, Sep 17 202411pm Tue, Sep 17 202412am Wed, Sep 18 20241am Wed, Sep 18 20242am Wed, Sep 18 20243am Wed, Sep 18 20244am Wed, Sep 18 20245am Wed, Sep 18 20246am Wed, Sep 18 20247am Wed, Sep 18 20248am Wed, Sep 18 20249am Wed, Sep 18 202410am Wed, Sep 18 202411am Wed, Sep 18 202412pm Wed, Sep 18 20241pm Wed, Sep 18 20242pm Wed, Sep 18 20243pm Wed, Sep 18 20244pm Wed, Sep 18 20245pm Wed, Sep 18 20246pm Wed, Sep 18 20247pm Wed, Sep 18 20248pm Wed, Sep 18 20249pm Wed, Sep 18 202410pm Wed, Sep 18 202411pm Wed, Sep 18 202412am Thu, Sep 19 20241am Thu, Sep 19 20242am Thu, Sep 19 20243am Thu, Sep 19 20244am Thu, Sep 19 20245am Thu, Sep 19 20246am Thu, Sep 19 20247am Thu, Sep 19 20248am Thu, Sep 19 20249am Thu, Sep 19 202410am Thu, Sep 19 202411am Thu, Sep 19 202412pm Thu, Sep 19 20241pm Thu, Sep 19 20242pm Thu, Sep 19 20243pm Thu, Sep 19 20244pm Thu, Sep 19 20245pm Thu, Sep 19 20246pm Thu, Sep 19 20247pm Thu, Sep 19 20248pm Thu, Sep 19 20249pm Thu, Sep 19 202410pm Thu, Sep 19 202411pm Thu, Sep 19 202412am Fri, Sep 20 20241am Fri, Sep 20 20242am Fri, Sep 20 20243am Fri, Sep 20 20244am Fri, Sep 20 20245am Fri, Sep 20 20246am Fri, Sep 20 2024

Date	09/15					09/16
Hour (EDT)	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18
Temperature (°F)	77	72	71	67	65	63	61	60	59	58	58	58	57	60	64	66	68	70	72	73	75	75	74	73
Dewpoint (°F)	57	56	57	57	56	55	55	55	54	54	55	55	55	56	57	58	58	58	58	58	58	59	59	60
Heat Index (°F)	77																				75	75
Surface Wind (mph)	9	9	9	8	7	7	7	6	6	7	7	7	7	8	9	9	9	9	9	10	10	10	11	10
Wind Dir	E	E	E	E	E	E	E	E	NE	NE	NE	NE	NE	NE	NE	NE	E	E	E	E	E	E	E	E
Gust															18							18	18
Sky Cover (%)	54	68	66	71	65	59	67	66	63	67	74	84	83	87	86	82	79	75	81	64	69	61	59	74
Precipitation Potential (%)	2	0	0	0	0	0	0	0	0	0	1	1	2	2	1	2	1	1	1	0	0	0	0	0
Relative Humidity (%)	50	57	61	70	73	75	81	84	83	86	90	90	93	87	78	75	70	66	61	59	55	58	59	64
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date						09/17
Hour (EDT)	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18
Temperature (°F)	72	69	68	67	67	66	66	66	67	66	66	65	65	66	67	68	70	71	72	73	73	73	72	71
Dewpoint (°F)	61	61	62	62	63	63	63	64	64	64	64	64	64	65	65	65	65	66	67	67	67	67	66	66
Heat Index (°F)
Surface Wind (mph)	9	9	9	9	10	10	10	10	10	11	11	11	11	13	13	11	11	13	13	13	13	13	11	11
Wind Dir	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E
Gust										18	18	18	20	21	21	22	23	23	23	22	22	22	21	21
Sky Cover (%)	80	82	81	81	85	88	91	92	90	91	91	95	95	97	97	96	97	97	97	97	96	95	96	95
Precipitation Potential (%)	1	4	4	4	6	6	6	28	28	28	23	23	23	23	23	23	34	34	34	46	46	46	51	51
Relative Humidity (%)	68	76	81	84	87	90	90	93	90	93	93	97	97	97	93	90	84	84	84	81	81	81	81	84
Rain	--	--	--	--	--	--	--	Chc	Chc	Chc	SChc	SChc	SChc	SChc	SChc	SChc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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