Point Forecast: 2 Miles W Petersham MA  42.49N 72.21W (Elev. 797 ft)	Last Update: 3:04 am EDT May 16, 2025

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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 Trans. Wind  ktmphkm/hm/s 20ft Wind  ktmphkm/hm/s Vent Rate (x1000 mph-ft) Dispersion Index Ceiling Height Visibility Thunder Potential

48-Hour Period Starting: 3am Fri, May 16 20254am Fri, May 16 20255am Fri, May 16 20256am Fri, May 16 20257am Fri, May 16 20258am Fri, May 16 20259am Fri, May 16 202510am Fri, May 16 202511am Fri, May 16 202512pm Fri, May 16 20251pm Fri, May 16 20252pm Fri, May 16 20253pm Fri, May 16 20254pm Fri, May 16 20255pm Fri, May 16 20256pm Fri, May 16 20257pm Fri, May 16 20258pm Fri, May 16 20259pm Fri, May 16 202510pm Fri, May 16 202511pm Fri, May 16 202512am Sat, May 17 20251am Sat, May 17 20252am Sat, May 17 20253am Sat, May 17 20254am Sat, May 17 20255am Sat, May 17 20256am Sat, May 17 20257am Sat, May 17 20258am Sat, May 17 20259am Sat, May 17 202510am Sat, May 17 202511am Sat, May 17 202512pm Sat, May 17 20251pm Sat, May 17 20252pm Sat, May 17 20253pm Sat, May 17 20254pm Sat, May 17 20255pm Sat, May 17 20256pm Sat, May 17 20257pm Sat, May 17 20258pm Sat, May 17 20259pm Sat, May 17 202510pm Sat, May 17 202511pm Sat, May 17 202512am Sun, May 18 20251am Sun, May 18 20252am Sun, May 18 20253am Sun, May 18 20254am Sun, May 18 20255am Sun, May 18 20256am Sun, May 18 20257am Sun, May 18 20258am Sun, May 18 20259am Sun, May 18 202510am Sun, May 18 202511am Sun, May 18 202512pm Sun, May 18 20251pm Sun, May 18 20252pm Sun, May 18 20253pm Sun, May 18 20254pm Sun, May 18 20255pm Sun, May 18 20256pm Sun, May 18 20257pm Sun, May 18 20258pm Sun, May 18 20259pm Sun, May 18 202510pm Sun, May 18 202511pm Sun, May 18 202512am Mon, May 19 20251am Mon, May 19 20252am Mon, May 19 20253am Mon, May 19 20254am Mon, May 19 20255am Mon, May 19 20256am Mon, May 19 20257am Mon, May 19 20258am Mon, May 19 20259am Mon, May 19 202510am Mon, May 19 202511am Mon, May 19 202512pm Mon, May 19 20251pm Mon, May 19 20252pm Mon, May 19 20253pm Mon, May 19 20254pm Mon, May 19 20255pm Mon, May 19 20256pm Mon, May 19 20257pm Mon, May 19 20258pm Mon, May 19 20259pm Mon, May 19 202510pm Mon, May 19 202511pm Mon, May 19 202512am Tue, May 20 20251am Tue, May 20 20252am Tue, May 20 20253am Tue, May 20 20254am Tue, May 20 20255am Tue, May 20 20256am Tue, May 20 20257am Tue, May 20 20258am Tue, May 20 20259am Tue, May 20 202510am Tue, May 20 202511am Tue, May 20 202512pm Tue, May 20 20251pm Tue, May 20 20252pm Tue, May 20 2025

Date	05/16																					05/17
Hour (EDT)	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02
Temperature (°F)	62	61	61	61	62	63	66	69	71	74	75	77	77	77	76	74	72	69	68	66	65	64	63	63
Dewpoint (°F)	60	60	60	60	61	61	61	61	61	61	60	60	61	61	61	61	61	62	62	62	61	62	62	62
Heat Index (°F)											75	77	77	77	76
Surface Wind (mph)	5	5	5	3	5	3	5	5	6	6	7	7	7	8	8	8	7	7	6	6	5	5	3	3
Wind Dir	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S
Gust
Sky Cover (%)	97	97	97	96	96	96	95	90	78	65	65	65	64	64	65	66	78	89	86	89	89	91	92	93
Precipitation Potential (%)	5	4	2	2	3	3	3	5	7	8	8	9	13	17	22	23	24	26	25	24	23	21	20	19
Relative Humidity (%)	93	97	97	97	97	93	84	76	71	64	60	56	58	58	60	64	68	78	81	87	87	93	97	97
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc	SChc	Chc	Chc	SChc	SChc	SChc	SChc	SChc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc	SChc	SChc	SChc	--	--	--	--	--
Date																						05/18
Hour (EDT)	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02
Temperature (°F)	62	62	61	61	62	65	66	68	69	71	72	72	72	72	71	70	68	67	65	64	62	61	60	58
Dewpoint (°F)	62	61	61	61	62	62	62	63	63	63	63	63	63	63	62	62	61	61	60	60	59	58	57	56
Heat Index (°F)
Surface Wind (mph)	3	2	2	2	3	3	5	5	6	7	9	10	9	9	8	7	7	6	6	6	6	6	6	6
Wind Dir	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	SW	SW	SW	SW	W	W	W
Gust
Sky Cover (%)	94	95	96	97	97	98	97	95	94	90	86	82	81	80	78	77	79	71	69	65	62	57	52	48
Precipitation Potential (%)	18	18	17	16	16	15	17	19	21	30	39	48	54	60	66	67	69	71	60	50	39	33	28	22
Relative Humidity (%)	100	97	100	100	100	90	87	84	81	76	73	73	73	73	73	76	78	84	84	87	90	90	90	93
Rain	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	Chc	Chc	Chc	Chc	Lkly	Lkly	Lkly	Lkly	Lkly	Lkly	Chc	Chc	Chc	Chc	SChc
Thunder	--	--	--	--	--	--	--	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	Chc	Chc	Chc	--	--	--	--	--	--

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