Point Forecast: 3 Miles NW Mercersburg PA  39.87N 77.95W (Elev. 997 ft)	Last Update: 2:49 pm EDT Jun 4, 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 20ft Wind  ktmphkm/hm/s Vent Rate (x1000 mph-ft) Davis Stability Index Atmospheric Dispersion Index Low Visibility Occurrence Risk Index Ceiling Height Visibility Thunder Potential

48-Hour Period Starting: 6pm Tue, Jun 4 20247pm Tue, Jun 4 20248pm Tue, Jun 4 20249pm Tue, Jun 4 202410pm Tue, Jun 4 202411pm Tue, Jun 4 202412am Wed, Jun 5 20241am Wed, Jun 5 20242am Wed, Jun 5 20243am Wed, Jun 5 20244am Wed, Jun 5 20245am Wed, Jun 5 20246am Wed, Jun 5 20247am Wed, Jun 5 20248am Wed, Jun 5 20249am Wed, Jun 5 202410am Wed, Jun 5 202411am Wed, Jun 5 202412pm Wed, Jun 5 20241pm Wed, Jun 5 20242pm Wed, Jun 5 20243pm Wed, Jun 5 20244pm Wed, Jun 5 20245pm Wed, Jun 5 20246pm Wed, Jun 5 20247pm Wed, Jun 5 20248pm Wed, Jun 5 20249pm Wed, Jun 5 202410pm Wed, Jun 5 202411pm Wed, Jun 5 202412am Thu, Jun 6 20241am Thu, Jun 6 20242am Thu, Jun 6 20243am Thu, Jun 6 20244am Thu, Jun 6 20245am Thu, Jun 6 20246am Thu, Jun 6 20247am Thu, Jun 6 20248am Thu, Jun 6 20249am Thu, Jun 6 202410am Thu, Jun 6 202411am Thu, Jun 6 202412pm Thu, Jun 6 20241pm Thu, Jun 6 20242pm Thu, Jun 6 20243pm Thu, Jun 6 20244pm Thu, Jun 6 20245pm Thu, Jun 6 20246pm Thu, Jun 6 20247pm Thu, Jun 6 20248pm Thu, Jun 6 20249pm Thu, Jun 6 202410pm Thu, Jun 6 202411pm Thu, Jun 6 202412am Fri, Jun 7 20241am Fri, Jun 7 20242am Fri, Jun 7 20243am Fri, Jun 7 20244am Fri, Jun 7 20245am Fri, Jun 7 20246am Fri, Jun 7 20247am Fri, Jun 7 20248am Fri, Jun 7 20249am Fri, Jun 7 202410am Fri, Jun 7 202411am Fri, Jun 7 202412pm Fri, Jun 7 20241pm Fri, Jun 7 20242pm Fri, Jun 7 20243pm Fri, Jun 7 20244pm Fri, Jun 7 20245pm Fri, Jun 7 20246pm Fri, Jun 7 20247pm Fri, Jun 7 20248pm Fri, Jun 7 20249pm Fri, Jun 7 202410pm Fri, Jun 7 202411pm Fri, Jun 7 202412am Sat, Jun 8 20241am Sat, Jun 8 20242am Sat, Jun 8 20243am Sat, Jun 8 20244am Sat, Jun 8 20245am Sat, Jun 8 20246am Sat, Jun 8 20247am Sat, Jun 8 20248am Sat, Jun 8 20249am Sat, Jun 8 202410am Sat, Jun 8 202411am Sat, Jun 8 202412pm Sat, Jun 8 20241pm Sat, Jun 8 20242pm Sat, Jun 8 20243pm Sat, Jun 8 20244pm Sat, Jun 8 20245pm Sat, Jun 8 20246pm Sat, Jun 8 20247pm Sat, Jun 8 20248pm Sat, Jun 8 20249pm Sat, Jun 8 202410pm Sat, Jun 8 202411pm Sat, Jun 8 202412am Sun, Jun 9 20241am Sun, Jun 9 20242am Sun, Jun 9 20243am Sun, Jun 9 20244am Sun, Jun 9 20245am Sun, Jun 9 2024

Date	06/04						06/05
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	78	74	73	71	70	69	67	67	66	66	66	66	67	70	71	72	73	75	74	75	76	75
Dewpoint (°F)	62	63	64	64	63	64	64	64	64	64	64	64	64	65	66	68	68	68	68	68	69	69	68	68
Heat Index (°F)	83	82	78																	75		75	76	75
Surface Wind (mph)	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	6	6	6	6	6	6	6
Wind Dir	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	S	S
Gust
Sky Cover (%)	49	54	56	63	65	68	67	73	80	83	81	86	88	85	88	88	88	89	91	93	94	94	93	94
Precipitation Potential (%)	6	9	10	8	6	10	16	28	21	17	15	12	10	11	9	11	14	18	24	32	52	75	82	81
Relative Humidity (%)	51	54	62	71	71	79	81	84	90	90	93	93	93	97	97	93	90	87	84	79	84	82	76	79
Rain	--	--	--	--	--	--	SChc	Chc	SChc	SChc	SChc	--	--	--	--	--	--	SChc	SChc	Chc	Chc	Ocnl	Ocnl	Ocnl
Thunder	--	--	--	--	--	--	SChc	Chc	--	--	--	--	--	--	--	--	--	--	--	SChc	Chc	Chc	Chc	Chc
Date							06/06
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)	75	73	72	71	70	70	70	69	68	68	67	67	68	68	69	71	73	75	77	79	81	81	81	81
Dewpoint (°F)	68	67	66	67	67	66	67	67	66	66	65	65	66	66	67	66	66	65	63	61	59	59	58	58
Heat Index (°F)	75																	75	77	79	81	81	81	81
Surface Wind (mph)	6	6	6	6	6	6	6	6	6	6	6	6	6	7	7	7	7	7	7	8	8	8	8	8
Wind Dir	S	S	S	S	S	S	S	S	S	S	SW	SW	SW	SW	SW	W	W	W	W	W	W	W	W	W
Gust
Sky Cover (%)	94	93	93	94	94	94	92	91	90	84	79	73	65	58	50	44	38	32	26	20	14	16	18	20
Precipitation Potential (%)	80	77	78	78	78	78	78	78	43	43	43	43	43	43	28	28	28	28	28	28	24	24	24	24
Relative Humidity (%)	79	81	81	87	90	87	90	93	93	93	93	93	93	93	93	84	79	71	62	54	47	47	46	46
Rain	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	SChc	SChc
Thunder	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc

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