Point Forecast: Chambersburg PA  39.93N 77.66W (Elev. 617 ft)	Last Update: 3:11 pm EDT May 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 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: 4pm Wed, May 15 20245pm Wed, May 15 20246pm Wed, May 15 20247pm Wed, May 15 20248pm Wed, May 15 20249pm Wed, May 15 202410pm Wed, May 15 202411pm Wed, May 15 202412am Thu, May 16 20241am Thu, May 16 20242am Thu, May 16 20243am Thu, May 16 20244am Thu, May 16 20245am Thu, May 16 20246am Thu, May 16 20247am Thu, May 16 20248am Thu, May 16 20249am Thu, May 16 202410am Thu, May 16 202411am Thu, May 16 202412pm Thu, May 16 20241pm Thu, May 16 20242pm Thu, May 16 20243pm Thu, May 16 20244pm Thu, May 16 20245pm Thu, May 16 20246pm Thu, May 16 20247pm Thu, May 16 20248pm Thu, May 16 20249pm Thu, May 16 202410pm Thu, May 16 202411pm Thu, May 16 202412am Fri, May 17 20241am Fri, May 17 20242am Fri, May 17 20243am Fri, May 17 20244am Fri, May 17 20245am Fri, May 17 20246am Fri, May 17 20247am Fri, May 17 20248am Fri, May 17 20249am Fri, May 17 202410am Fri, May 17 202411am Fri, May 17 202412pm Fri, May 17 20241pm Fri, May 17 20242pm Fri, May 17 20243pm Fri, May 17 20244pm Fri, May 17 20245pm Fri, May 17 20246pm Fri, May 17 20247pm Fri, May 17 20248pm Fri, May 17 20249pm Fri, May 17 202410pm Fri, May 17 202411pm Fri, May 17 202412am Sat, May 18 20241am Sat, May 18 20242am Sat, May 18 20243am Sat, May 18 20244am Sat, May 18 20245am Sat, May 18 20246am Sat, May 18 20247am Sat, May 18 20248am Sat, May 18 20249am Sat, May 18 202410am Sat, May 18 202411am Sat, May 18 202412pm Sat, May 18 20241pm Sat, May 18 20242pm Sat, May 18 20243pm Sat, May 18 20244pm Sat, May 18 20245pm Sat, May 18 20246pm Sat, May 18 20247pm Sat, May 18 20248pm Sat, May 18 20249pm Sat, May 18 202410pm Sat, May 18 202411pm Sat, May 18 202412am Sun, May 19 20241am Sun, May 19 20242am Sun, May 19 20243am Sun, May 19 20244am Sun, May 19 20245am Sun, May 19 20246am Sun, May 19 20247am Sun, May 19 20248am Sun, May 19 20249am Sun, May 19 202410am Sun, May 19 202411am Sun, May 19 202412pm Sun, May 19 20241pm Sun, May 19 20242pm Sun, May 19 20243pm Sun, May 19 20244pm Sun, May 19 20245pm Sun, May 19 20246pm Sun, May 19 20247pm Sun, May 19 20248pm Sun, May 19 20249pm Sun, May 19 202410pm Sun, May 19 202411pm Sun, May 19 202412am Mon, May 20 20241am Mon, May 20 20242am Mon, May 20 20243am Mon, May 20 2024

Date	05/15								05/16
Hour (EDT)	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15
Temperature (°F)	68	68	65	64	62	61	60	59	58	56	55	55	54	55	54	55	58	62	66	69	71	72	74	74
Dewpoint (°F)	59	59	57	57	57	58	57	57	56	56	55	55	54	54	54	55	57	57	58	58	58	58	58	58
Heat Index (°F)
Surface Wind (mph)	6	6	5	3	3	2	2	2	2	2	2	2	2	2	2	2	5	6	7	8	8	9	9	9
Wind Dir	NE	NE	NE	NE	NE	NE	NE	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N
Gust
Sky Cover (%)	96	100	100	100	90	81	71	68	68	63	63	59	59	60	59	59	54	52	50	49	47	45	43	43
Precipitation Potential (%)	7	4	2	2	6	11	15	11	6	4	6	6	6	6	6	6	11	11	11	11	11	11	11	11
Relative Humidity (%)	73	73	75	78	84	90	90	93	93	100	100	100	100	96	100	100	96	84	75	68	63	61	57	57
Rain	--	--	--	--	--	--	SChc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date									05/17
Hour (EDT)	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15
Temperature (°F)	74	75	74	72	70	67	65	62	61	60	58	58	57	56	57	58	60	63	66	69	70	72	74	74
Dewpoint (°F)	57	57	58	58	59	59	58	58	58	57	57	57	57	56	57	57	57	58	58	59	59	60	60	60
Heat Index (°F)		75
Surface Wind (mph)	8	8	7	6	3	3	2	2	2	2	2	2	2	2	2	2	2	3	3	3	5	5	6	6
Wind Dir	N	N	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	E	E	E	E	E	E	E	SE	SE	SE
Gust
Sky Cover (%)	43	43	42	42	42	41	40	39	37	36	35	40	46	51	56	62	67	68	69	70	70	71	72	75
Precipitation Potential (%)	11	11	11	11	7	7	7	7	7	7	5	5	5	5	5	5	10	10	10	10	10	10	38	38
Relative Humidity (%)	55	54	57	61	68	75	78	87	90	90	96	96	100	100	100	96	90	84	75	70	68	66	62	62
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	Chc	Chc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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