Point Forecast: Chambersburg PA  39.93N 77.66W (Elev. 617 ft)	Last Update: 4:26 pm EDT Mar 11, 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: 5pm Wed, Mar 11 20266pm Wed, Mar 11 20267pm Wed, Mar 11 20268pm Wed, Mar 11 20269pm Wed, Mar 11 202610pm Wed, Mar 11 202611pm Wed, Mar 11 202612am Thu, Mar 12 20261am Thu, Mar 12 20262am Thu, Mar 12 20263am Thu, Mar 12 20264am Thu, Mar 12 20265am Thu, Mar 12 20266am Thu, Mar 12 20267am Thu, Mar 12 20268am Thu, Mar 12 20269am Thu, Mar 12 202610am Thu, Mar 12 202611am Thu, Mar 12 202612pm Thu, Mar 12 20261pm Thu, Mar 12 20262pm Thu, Mar 12 20263pm Thu, Mar 12 20264pm Thu, Mar 12 20265pm Thu, Mar 12 20266pm Thu, Mar 12 20267pm Thu, Mar 12 20268pm Thu, Mar 12 20269pm Thu, Mar 12 202610pm Thu, Mar 12 202611pm Thu, Mar 12 202612am Fri, Mar 13 20261am Fri, Mar 13 20262am Fri, Mar 13 20263am Fri, Mar 13 20264am Fri, Mar 13 20265am Fri, Mar 13 20266am Fri, Mar 13 20267am Fri, Mar 13 20268am Fri, Mar 13 20269am Fri, Mar 13 202610am Fri, Mar 13 202611am Fri, Mar 13 202612pm Fri, Mar 13 20261pm Fri, Mar 13 20262pm Fri, Mar 13 20263pm Fri, Mar 13 20264pm Fri, Mar 13 20265pm Fri, Mar 13 20266pm Fri, Mar 13 20267pm Fri, Mar 13 20268pm Fri, Mar 13 20269pm Fri, Mar 13 202610pm Fri, Mar 13 202611pm Fri, Mar 13 202612am Sat, Mar 14 20261am Sat, Mar 14 20262am Sat, Mar 14 20263am Sat, Mar 14 20264am Sat, Mar 14 20265am Sat, Mar 14 20266am Sat, Mar 14 20267am Sat, Mar 14 20268am Sat, Mar 14 20269am Sat, Mar 14 202610am Sat, Mar 14 202611am Sat, Mar 14 202612pm Sat, Mar 14 20261pm Sat, Mar 14 20262pm Sat, Mar 14 20263pm Sat, Mar 14 20264pm Sat, Mar 14 20265pm Sat, Mar 14 20266pm Sat, Mar 14 20267pm Sat, Mar 14 20268pm Sat, Mar 14 20269pm Sat, Mar 14 202610pm Sat, Mar 14 202611pm Sat, Mar 14 202612am Sun, Mar 15 20261am Sun, Mar 15 20262am Sun, Mar 15 20263am Sun, Mar 15 20264am Sun, Mar 15 20265am Sun, Mar 15 20266am Sun, Mar 15 20267am Sun, Mar 15 20268am Sun, Mar 15 20269am Sun, Mar 15 202610am Sun, Mar 15 202611am Sun, Mar 15 202612pm Sun, Mar 15 20261pm Sun, Mar 15 20262pm Sun, Mar 15 20263pm Sun, Mar 15 20264pm Sun, Mar 15 20265pm Sun, Mar 15 20266pm Sun, Mar 15 20267pm Sun, Mar 15 20268pm Sun, Mar 15 20269pm Sun, Mar 15 202610pm Sun, Mar 15 202611pm Sun, Mar 15 202612am Mon, Mar 16 20261am Mon, Mar 16 20262am Mon, Mar 16 20263am Mon, Mar 16 20264am Mon, Mar 16 2026

Date	03/11							03/12
Hour (EDT)	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16
Temperature (°F)	75	75	72	70	68	67	66	66	65	65	62	56	51	45	42	40	38	39	39	40	40	41	41	42
Dewpoint (°F)	63	63	63	62	61	61	60	60	59	58	55	48	44	39	36	33	30	29	27	26	25	24	23	22
Wind Chill (°F)														38	34	32	29	30	30	32	32	33	33	35
Surface Wind (mph)	11	10	11	11	11	10	10	9	10	10	11	13	14	15	16	16	17	17	16	16	16	15	14	13
Wind Dir	SW	S	S	S	S	SW	SW	SW	SW	SW	W	W	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW
Gust	25	24	24	25	24	28	28	28	28	26	28	29	30	31	32	32	32	31	30	29	28	28	26	25
Sky Cover (%)	78	71	70	79	77	78	82	85	88	90	91	92	93	88	84	79	81	83	85	90	91	87	77	67
Precipitation Potential (%)	44	53	61	68	65	58	29	58	76	81	61	65	79	79	62	35	31	19	20	11	5	2	0	1
Relative Humidity (%)	66	66	73	76	78	81	81	81	81	78	78	74	77	79	79	76	73	67	62	57	55	50	48	44
Rain	Chc	Chc	Lkly	Lkly	Lkly	Lkly	Chc	Lkly	Ocnl	Ocnl	Lkly	Lkly	Ocnl	Ocnl	Lkly	Chc	Chc	--	--	--	--	--	--	--
Thunder	Chc	Chc	Lkly	Lkly	Lkly	Chc	SChc	SChc	SChc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	SChc	SChc	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date								03/13
Hour (EDT)	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16
Temperature (°F)	42	42	40	38	36	35	34	33	32	31	31	30	30	30	31	32	35	39	42	45	47	49	51	52
Dewpoint (°F)	21	19	19	19	21	21	19	19	19	20	20	21	21	21	21	21	21	22	23	24	25	26	27	27
Wind Chill (°F)	36	36	35	34	32	32	34	33	32	31	31	30	30	26	26	26	28	32	35	38	41	43
Surface Wind (mph)	11	9	8	6	5	3	2	1	1	1	1	1	2	3	5	6	8	10	13	15	16	17	16	15
Wind Dir	NW	NW	NW	NW	W	W	W	W	W	W	SW	SW	S	S	S	S	S	S	S	S	S	S	S	S
Gust	24	21														21	24	29	31	33	34	36	36	34
Sky Cover (%)	54	31	25	10	7	6	5	7	10	12	19	27	34	46	57	69	73	76	80	79	77	76	60	44
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	2	2	2	4	4	4	4	4	4
Relative Humidity (%)	43	39	42	46	54	56	54	56	58	63	63	69	69	69	66	63	56	50	46	43	42	40	39	38
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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