Point Forecast: Chambersburg PA  39.93N 77.66W (Elev. 617 ft)	Last Update: 12:51 am EDT Apr 25, 2026

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Weather Elements Fire Weather Aviation Weather Temperature (°F) Dewpoint (°F) Wind Chill (°F) Surface Wind  ktmphkm/hm/s Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Snow Freezing Rain Sleet Fog Mixing Height  x100ftx100m 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: 1am Sat, Apr 25 20262am Sat, Apr 25 20263am Sat, Apr 25 20264am Sat, Apr 25 20265am Sat, Apr 25 20266am Sat, Apr 25 20267am Sat, Apr 25 20268am Sat, Apr 25 20269am Sat, Apr 25 202610am Sat, Apr 25 202611am Sat, Apr 25 202612pm Sat, Apr 25 20261pm Sat, Apr 25 20262pm Sat, Apr 25 20263pm Sat, Apr 25 20264pm Sat, Apr 25 20265pm Sat, Apr 25 20266pm Sat, Apr 25 20267pm Sat, Apr 25 20268pm Sat, Apr 25 20269pm Sat, Apr 25 202610pm Sat, Apr 25 202611pm Sat, Apr 25 202612am Sun, Apr 26 20261am Sun, Apr 26 20262am Sun, Apr 26 20263am Sun, Apr 26 20264am Sun, Apr 26 20265am Sun, Apr 26 20266am Sun, Apr 26 20267am Sun, Apr 26 20268am Sun, Apr 26 20269am Sun, Apr 26 202610am Sun, Apr 26 202611am Sun, Apr 26 202612pm Sun, Apr 26 20261pm Sun, Apr 26 20262pm Sun, Apr 26 20263pm Sun, Apr 26 20264pm Sun, Apr 26 20265pm Sun, Apr 26 20266pm Sun, Apr 26 20267pm Sun, Apr 26 20268pm Sun, Apr 26 20269pm Sun, Apr 26 202610pm Sun, Apr 26 202611pm Sun, Apr 26 202612am Mon, Apr 27 20261am Mon, Apr 27 20262am Mon, Apr 27 20263am Mon, Apr 27 20264am Mon, Apr 27 20265am Mon, Apr 27 20266am Mon, Apr 27 20267am Mon, Apr 27 20268am Mon, Apr 27 20269am Mon, Apr 27 202610am Mon, Apr 27 202611am Mon, Apr 27 202612pm Mon, Apr 27 20261pm Mon, Apr 27 20262pm Mon, Apr 27 20263pm Mon, Apr 27 20264pm Mon, Apr 27 20265pm Mon, Apr 27 20266pm Mon, Apr 27 20267pm Mon, Apr 27 20268pm Mon, Apr 27 20269pm Mon, Apr 27 202610pm Mon, Apr 27 202611pm Mon, Apr 27 202612am Tue, Apr 28 20261am Tue, Apr 28 20262am Tue, Apr 28 20263am Tue, Apr 28 20264am Tue, Apr 28 20265am Tue, Apr 28 20266am Tue, Apr 28 20267am Tue, Apr 28 20268am Tue, Apr 28 20269am Tue, Apr 28 202610am Tue, Apr 28 202611am Tue, Apr 28 202612pm Tue, Apr 28 20261pm Tue, Apr 28 20262pm Tue, Apr 28 20263pm Tue, Apr 28 20264pm Tue, Apr 28 20265pm Tue, Apr 28 20266pm Tue, Apr 28 20267pm Tue, Apr 28 20268pm Tue, Apr 28 20269pm Tue, Apr 28 202610pm Tue, Apr 28 202611pm Tue, Apr 28 202612am Wed, Apr 29 20261am Wed, Apr 29 20262am Wed, Apr 29 20263am Wed, Apr 29 20264am Wed, Apr 29 20265am Wed, Apr 29 20266am Wed, Apr 29 20267am Wed, Apr 29 20268am Wed, Apr 29 20269am Wed, Apr 29 202610am Wed, Apr 29 202611am Wed, Apr 29 202612pm Wed, Apr 29 2026

Date	04/25																							04/26
Hour (EDT)	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00
Temperature (°F)	59	59	57	54	52	52	52	52	53	54	55	56	57	57	56	56	55	54	53	53	52	51	50	48
Dewpoint (°F)	54	54	53	53	52	51	49	48	48	49	49	49	49	49	49	49	49	49	48	48	48	48	46	45
Wind Chill (°F)																							48	45
Surface Wind (mph)	1	2	2	2	3	3	5	6	6	7	7	7	7	8	8	8	8	8	8	6	6	6	6	6
Wind Dir	E	E	E	E	E	E	E	SE	SE	SE	SE	SE	SE	SE	SE	E	E	E	E	E	NE	NE	NE	NE
Gust
Sky Cover (%)	65	64	70	75	81	86	91	95	97	98	100	100	100	100	100	100	100	100	100	94	95	96	96	97
Precipitation Potential (%)	25	27	33	38	44	42	37	34	34	34	79	79	79	100	100	100	100	100	100	85	80	76	71	67
Relative Humidity (%)	83	83	86	96	100	96	89	86	83	83	80	77	75	75	77	77	80	83	83	83	86	89	86	89
Rain	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Lkly	Lkly
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date																								04/27
Hour (EDT)	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00
Temperature (°F)	47	46	45	44	43	43	44	44	45	47	49	51	53	55	56	56	57	57	56	55	54	51	49	47
Dewpoint (°F)	45	44	43	43	42	41	41	42	42	42	43	43	44	44	44	43	43	43	43	43	43	43	43	42
Wind Chill (°F)	44	43	42	41	39	39	40	40	41	44	46												49	47
Surface Wind (mph)	6	6	6	6	7	7	7	7	7	7	7	7	7	7	7	7	7	6	5	3	2	2	2	2
Wind Dir	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE	NE
Gust
Sky Cover (%)	97	96	96	95	92	92	95	90	83	83	82	82	81	81	76	72	67	64	62	59	51	44	36	32
Precipitation Potential (%)	63	58	55	49	43	36	30	27	27	27	27	27	27	14	14	14	14	14	14	13	13	13	13	13
Relative Humidity (%)	93	93	93	96	96	93	89	93	89	83	80	74	71	66	64	61	60	60	61	63	68	74	80	84
Rain	Lkly	Lkly	Lkly	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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