Point Forecast: Chambersburg PA  39.93N 77.66W (Elev. 188 m)	Last Update: 10:46 pm EDT Apr 16, 2026

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Weather Elements Fire Weather Aviation Weather Temperature (°C) Dewpoint (°C) Wind Chill (°C) 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-m) Davis Stability Index Atmospheric Dispersion Index Low Visibility Occurrence Risk Index Ceiling Height Visibility Thunder Potential

48-Hour Period Starting: 11pm Thu, Apr 16 202612am Fri, Apr 17 20261am Fri, Apr 17 20262am Fri, Apr 17 20263am Fri, Apr 17 20264am Fri, Apr 17 20265am Fri, Apr 17 20266am Fri, Apr 17 20267am Fri, Apr 17 20268am Fri, Apr 17 20269am Fri, Apr 17 202610am Fri, Apr 17 202611am Fri, Apr 17 202612pm Fri, Apr 17 20261pm Fri, Apr 17 20262pm Fri, Apr 17 20263pm Fri, Apr 17 20264pm Fri, Apr 17 20265pm Fri, Apr 17 20266pm Fri, Apr 17 20267pm Fri, Apr 17 20268pm Fri, Apr 17 20269pm Fri, Apr 17 202610pm Fri, Apr 17 202611pm Fri, Apr 17 202612am Sat, Apr 18 20261am Sat, Apr 18 20262am Sat, Apr 18 20263am Sat, Apr 18 20264am Sat, Apr 18 20265am Sat, Apr 18 20266am Sat, Apr 18 20267am Sat, Apr 18 20268am Sat, Apr 18 20269am Sat, Apr 18 202610am Sat, Apr 18 202611am Sat, Apr 18 202612pm Sat, Apr 18 20261pm Sat, Apr 18 20262pm Sat, Apr 18 20263pm Sat, Apr 18 20264pm Sat, Apr 18 20265pm Sat, Apr 18 20266pm Sat, Apr 18 20267pm Sat, Apr 18 20268pm Sat, Apr 18 20269pm Sat, Apr 18 202610pm Sat, Apr 18 202611pm Sat, Apr 18 202612am Sun, Apr 19 20261am Sun, Apr 19 20262am Sun, Apr 19 20263am Sun, Apr 19 20264am Sun, Apr 19 20265am Sun, Apr 19 20266am Sun, Apr 19 20267am Sun, Apr 19 20268am Sun, Apr 19 20269am Sun, Apr 19 202610am Sun, Apr 19 202611am Sun, Apr 19 202612pm Sun, Apr 19 20261pm Sun, Apr 19 20262pm Sun, Apr 19 20263pm Sun, Apr 19 20264pm Sun, Apr 19 20265pm Sun, Apr 19 20266pm Sun, Apr 19 20267pm Sun, Apr 19 20268pm Sun, Apr 19 20269pm Sun, Apr 19 202610pm Sun, Apr 19 202611pm Sun, Apr 19 202612am Mon, Apr 20 20261am Mon, Apr 20 20262am Mon, Apr 20 20263am Mon, Apr 20 20264am Mon, Apr 20 20265am Mon, Apr 20 20266am Mon, Apr 20 20267am Mon, Apr 20 20268am Mon, Apr 20 20269am Mon, Apr 20 202610am Mon, Apr 20 202611am Mon, Apr 20 202612pm Mon, Apr 20 20261pm Mon, Apr 20 20262pm Mon, Apr 20 20263pm Mon, Apr 20 20264pm Mon, Apr 20 20265pm Mon, Apr 20 20266pm Mon, Apr 20 20267pm Mon, Apr 20 20268pm Mon, Apr 20 20269pm Mon, Apr 20 202610pm Mon, Apr 20 202611pm Mon, Apr 20 202612am Tue, Apr 21 20261am Tue, Apr 21 20262am Tue, Apr 21 20263am Tue, Apr 21 20264am Tue, Apr 21 20265am Tue, Apr 21 20266am Tue, Apr 21 20267am Tue, Apr 21 20268am Tue, Apr 21 20269am Tue, Apr 21 202610am Tue, Apr 21 2026

Date	04/16	04/17
Hour (EDT)	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22
Temperature (°C)	22	21	20	19	18	18	17	17	17	18	19	21	22	23	24	25	26	26	26	26	24	23	21	19
Dewpoint (°C)	14	15	16	15	15	15	14	14	14	15	14	14	14	13	13	13	12	12	12	12	12	12	12	12
Wind Chill (°C)
Surface Wind (mph)	5	3	3	3	2	2	2	2	2	2	3	3	5	6	6	6	6	6	5	3	2	2	1	1
Wind Dir	W	W	W	SW	W	W	SW	SW	SW	W	NW	NW	NW	NW	NW	NW	NW	N	N	N	N	N	N	N
Gust
Sky Cover (%)	85	86	73	71	68	50	42	40	31	23	23	30	23	20	20	16	35	35	35	28	13	16	14	24
Precipitation Potential (%)	40	38	28	33	16	16	14	11	9	7	5	8	12	12	7	10	19	19	19	16	4	1	1	1
Relative Humidity (%)	59	70	76	78	84	84	84	87	81	84	75	66	59	53	52	47	43	43	42	41	45	51	57	63
Rain	Chc	Chc	Chc	Chc	SChc	SChc	--	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc	SChc	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date		04/18
Hour (EDT)	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22
Temperature (°C)	18	17	16	15	14	14	14	14	15	16	18	21	23	24	26	27	28	28	28	27	26	24	23	22
Dewpoint (°C)	12	12	12	12	12	11	11	11	12	12	13	14	14	14	14	14	14	14	14	14	14	14	14	14
Wind Chill (°C)
Surface Wind (mph)	1	1	1	1	1	1	1	1	1	1	2	5	6	7	8	9	9	9	9	8	7	6	5	5
Wind Dir	NE	NE	NE	NE	NE	E	E	E	E	SE	SE	S	S	S	S	S	S	S	S	S	S	S	S	S
Gust
Sky Cover (%)	34	30	26	22	23	25	26	28	31	33	33	32	32	39	45	52	53	53	54	63	73	82	84	87
Precipitation Potential (%)	1	1	1	0	0	0	0	0	0	1	1	1	1	1	1	28	28	28	28	28	28	69	69	69
Relative Humidity (%)	65	70	75	80	83	83	80	80	80	78	70	66	59	54	49	44	43	41	43	45	50	56	59	64
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	Chc	Chc	Chc	Chc	Chc	Chc	Lkly	Lkly	Lkly
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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