Point Forecast: Chevy Chase MD  38.98N 77.09W (Elev. 344 ft)	Last Update: 7:30 am EDT Sep 27, 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: 9am Fri, Sep 27 202410am Fri, Sep 27 202411am Fri, Sep 27 202412pm Fri, Sep 27 20241pm Fri, Sep 27 20242pm Fri, Sep 27 20243pm Fri, Sep 27 20244pm Fri, Sep 27 20245pm Fri, Sep 27 20246pm Fri, Sep 27 20247pm Fri, Sep 27 20248pm Fri, Sep 27 20249pm Fri, Sep 27 202410pm Fri, Sep 27 202411pm Fri, Sep 27 202412am Sat, Sep 28 20241am Sat, Sep 28 20242am Sat, Sep 28 20243am Sat, Sep 28 20244am Sat, Sep 28 20245am Sat, Sep 28 20246am Sat, Sep 28 20247am Sat, Sep 28 20248am Sat, Sep 28 20249am Sat, Sep 28 202410am Sat, Sep 28 202411am Sat, Sep 28 202412pm Sat, Sep 28 20241pm Sat, Sep 28 20242pm Sat, Sep 28 20243pm Sat, Sep 28 20244pm Sat, Sep 28 20245pm Sat, Sep 28 20246pm Sat, Sep 28 20247pm Sat, Sep 28 20248pm Sat, Sep 28 20249pm Sat, Sep 28 202410pm Sat, Sep 28 202411pm Sat, Sep 28 202412am Sun, Sep 29 20241am Sun, Sep 29 20242am Sun, Sep 29 20243am Sun, Sep 29 20244am Sun, Sep 29 20245am Sun, Sep 29 20246am Sun, Sep 29 20247am Sun, Sep 29 20248am Sun, Sep 29 20249am Sun, Sep 29 202410am Sun, Sep 29 202411am Sun, Sep 29 202412pm Sun, Sep 29 20241pm Sun, Sep 29 20242pm Sun, Sep 29 20243pm Sun, Sep 29 20244pm Sun, Sep 29 20245pm Sun, Sep 29 20246pm Sun, Sep 29 20247pm Sun, Sep 29 20248pm Sun, Sep 29 20249pm Sun, Sep 29 202410pm Sun, Sep 29 202411pm Sun, Sep 29 202412am Mon, Sep 30 20241am Mon, Sep 30 20242am Mon, Sep 30 20243am Mon, Sep 30 20244am Mon, Sep 30 20245am Mon, Sep 30 20246am Mon, Sep 30 20247am Mon, Sep 30 20248am Mon, Sep 30 20249am Mon, Sep 30 202410am Mon, Sep 30 202411am Mon, Sep 30 202412pm Mon, Sep 30 20241pm Mon, Sep 30 20242pm Mon, Sep 30 20243pm Mon, Sep 30 20244pm Mon, Sep 30 20245pm Mon, Sep 30 20246pm Mon, Sep 30 20247pm Mon, Sep 30 20248pm Mon, Sep 30 20249pm Mon, Sep 30 202410pm Mon, Sep 30 202411pm Mon, Sep 30 202412am Tue, Oct 1 20241am Tue, Oct 1 20242am Tue, Oct 1 20243am Tue, Oct 1 20244am Tue, Oct 1 20245am Tue, Oct 1 20246am Tue, Oct 1 20247am Tue, Oct 1 20248am Tue, Oct 1 20249am Tue, Oct 1 202410am Tue, Oct 1 202411am Tue, Oct 1 202412pm Tue, Oct 1 20241pm Tue, Oct 1 20242pm Tue, Oct 1 20243pm Tue, Oct 1 20244pm Tue, Oct 1 20245pm Tue, Oct 1 20246pm Tue, Oct 1 20247pm Tue, Oct 1 20248pm Tue, Oct 1 2024

Date	09/27															09/28
Hour (EDT)	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08
Temperature (°F)	72	73	73	74	74	75	75	74	74	74	73	72	73	73	73	72	72	72	72	72	72	71	71	70
Dewpoint (°F)	72	72	72	72	72	73	72	72	72	72	72	72	71	72	72	72	72	72	72	71	72	71	71	70
Heat Index (°F)						75	75
Surface Wind (mph)	6	8	9	10	10	7	11	13	14	14	14	13	13	13	11	10	9	8	7	7	6	6	6	6
Wind Dir	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	E	SE	SE	SE	SE	SE
Gust			18	21	24	26	28	28	28	26	25	23	22	21	18
Sky Cover (%)	92	94	94	94	92	96	95	95	93	93	94	93	94	93	97	97	92	95	89	89	87	91	85	80
Precipitation Potential (%)	43	38	46	41	52	40	65	77	57	73	77	60	63	72	68	58	44	34	31	14	24	21	16	20
Relative Humidity (%)	100	97	97	93	93	94	90	93	93	93	97	100	93	97	97	100	100	100	100	97	100	100	100	100
Rain	Chc	Chc	Chc	Chc	Chc	Chc	Lkly	Ocnl	Lkly	Lkly	Ocnl	Lkly	Lkly	Lkly	Lkly	Lkly	Chc	Chc	Chc	--	SChc	SChc	SChc	SChc
Thunder	--	--	--	--	--	--	--	--	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	--	--	--	--	--
Date																09/29
Hour (EDT)	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08
Temperature (°F)	71	74	76	79	81	81	82	82	81	80	77	75	73	72	71	70	69	69	69	69	69	68	68	68
Dewpoint (°F)	71	72	72	71	69	68	67	67	67	67	68	68	68	69	69	69	68	68	68	68	68	68	68	68
Heat Index (°F)			76	79	84	84	85	85	83	82	77	75
Surface Wind (mph)	6	7	7	7	7	7	7	7	7	6	5	5	5	5	5	5	3	3	5	5	6	6	6	6
Wind Dir	S	S	S	S	S	S	S	S	S	S	SE	SE	E	E	E	E	E	E	E	E	E	E	E	E
Gust
Sky Cover (%)	73	58	45	40	39	39	38	36	34	35	38	43	51	63	70	75	80	83	83	83	83	84	85	85
Precipitation Potential (%)	20	20	17	17	17	18	18	18	18	18	18	36	36	36	36	36	36	27	27	27	27	27	27	27
Relative Humidity (%)	100	93	87	77	67	65	61	61	63	65	74	79	84	90	93	97	97	97	97	97	97	100	100	100
Rain	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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