Point Forecast: Chatham MA  41.68N 69.96W (Elev. 4 m)	Last Update: 10:05 am EDT Jul 8, 2025

[hide menu]

Weather Elements Fire Weather Aviation Weather Temperature (°C) Dewpoint (°C) Heat Index (°C) 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-m) Dispersion Index Ceiling Height Visibility Thunder Potential

48-Hour Period Starting: 11am Tue, Jul 8 202512pm Tue, Jul 8 20251pm Tue, Jul 8 20252pm Tue, Jul 8 20253pm Tue, Jul 8 20254pm Tue, Jul 8 20255pm Tue, Jul 8 20256pm Tue, Jul 8 20257pm Tue, Jul 8 20258pm Tue, Jul 8 20259pm Tue, Jul 8 202510pm Tue, Jul 8 202511pm Tue, Jul 8 202512am Wed, Jul 9 20251am Wed, Jul 9 20252am Wed, Jul 9 20253am Wed, Jul 9 20254am Wed, Jul 9 20255am Wed, Jul 9 20256am Wed, Jul 9 20257am Wed, Jul 9 20258am Wed, Jul 9 20259am Wed, Jul 9 202510am Wed, Jul 9 202511am Wed, Jul 9 202512pm Wed, Jul 9 20251pm Wed, Jul 9 20252pm Wed, Jul 9 20253pm Wed, Jul 9 20254pm Wed, Jul 9 20255pm Wed, Jul 9 20256pm Wed, Jul 9 20257pm Wed, Jul 9 20258pm Wed, Jul 9 20259pm Wed, Jul 9 202510pm Wed, Jul 9 202511pm Wed, Jul 9 202512am Thu, Jul 10 20251am Thu, Jul 10 20252am Thu, Jul 10 20253am Thu, Jul 10 20254am Thu, Jul 10 20255am Thu, Jul 10 20256am Thu, Jul 10 20257am Thu, Jul 10 20258am Thu, Jul 10 20259am Thu, Jul 10 202510am Thu, Jul 10 202511am Thu, Jul 10 202512pm Thu, Jul 10 20251pm Thu, Jul 10 20252pm Thu, Jul 10 20253pm Thu, Jul 10 20254pm Thu, Jul 10 20255pm Thu, Jul 10 20256pm Thu, Jul 10 20257pm Thu, Jul 10 20258pm Thu, Jul 10 20259pm Thu, Jul 10 202510pm Thu, Jul 10 202511pm Thu, Jul 10 202512am Fri, Jul 11 20251am Fri, Jul 11 20252am Fri, Jul 11 20253am Fri, Jul 11 20254am Fri, Jul 11 20255am Fri, Jul 11 20256am Fri, Jul 11 20257am Fri, Jul 11 20258am Fri, Jul 11 20259am Fri, Jul 11 202510am Fri, Jul 11 202511am Fri, Jul 11 202512pm Fri, Jul 11 20251pm Fri, Jul 11 20252pm Fri, Jul 11 20253pm Fri, Jul 11 20254pm Fri, Jul 11 20255pm Fri, Jul 11 20256pm Fri, Jul 11 20257pm Fri, Jul 11 20258pm Fri, Jul 11 20259pm Fri, Jul 11 202510pm Fri, Jul 11 202511pm Fri, Jul 11 202512am Sat, Jul 12 20251am Sat, Jul 12 20252am Sat, Jul 12 20253am Sat, Jul 12 20254am Sat, Jul 12 20255am Sat, Jul 12 20256am Sat, Jul 12 20257am Sat, Jul 12 20258am Sat, Jul 12 20259am Sat, Jul 12 202510am Sat, Jul 12 202511am Sat, Jul 12 202512pm Sat, Jul 12 20251pm Sat, Jul 12 20252pm Sat, Jul 12 20253pm Sat, Jul 12 20254pm Sat, Jul 12 20255pm Sat, Jul 12 20256pm Sat, Jul 12 20257pm Sat, Jul 12 20258pm Sat, Jul 12 20259pm Sat, Jul 12 202510pm Sat, Jul 12 2025

Date	07/08													07/09
Hour (EDT)	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10
Temperature (°C)	26	26	26	26	26	25	24	24	23	22	23	22	22	22	21	21	21	21	21	21	22	22	23	23
Dewpoint (°C)	23	24	24	23	24	24	23	23	23	22	22	22	22	21	21	21	21	21	21	21	22	22	23	23
Heat Index (°C)	26	26	26	26	26	25	24	24
Surface Wind (mph)	9	10	10	11	11	11	10	10	10	9	8	8	7	7	6	6	6	6	6	6	6	6	6	6
Wind Dir	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	W	W	W
Gust
Sky Cover (%)	26	20	17	14	33	51	58	62	60	71	73	81	77	77	71	82	81	83	87	90	84	73	84	73
Precipitation Potential (%)	3	4	8	11	23	35	48	52	50	60	61	57	52	58	53	52	52	52	52	62	57	32	32	32
Relative Humidity (%)	88	91	91	88	91	94	94	94	100	100	93	100	100	97	100	100	100	100	100	100	100	100	100	97
Rain	--	--	--	--	SChc	Chc	Chc	Chc	Chc	Lkly	Lkly	Lkly	Chc	Lkly	Chc	Chc	Chc	Chc	Chc	Lkly	Lkly	Chc	Chc	Chc
Thunder	--	--	--	--	SChc	Chc	Chc	Chc	Chc	Lkly	Lkly	Lkly	Chc	Lkly	Chc	Chc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	SChc
Date														07/10
Hour (EDT)	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10
Temperature (°C)	24	24	24	24	23	23	22	22	21	21	21	20	20	20	19	19	19	19	20	21	21	21	21	22
Dewpoint (°C)	23	23	22	22	22	22	22	21	21	21	21	20	20	20	19	19	19	19	19	20	20	21	21	22
Heat Index (°C)	24	24	24	24
Surface Wind (mph)	7	7	7	7	7	6	6	6	5	5	5	3	3	3	3	3	3	5	5	5	6	6	6	7
Wind Dir	W	W	W	W	W	NW	N	N	N	NE	NE	E	E	E	E	E	E	E	E	E	E	E	E	E
Gust
Sky Cover (%)	61	64	66	69	69	68	68	72	76	80	81	81	82	84	85	87	87	87	87	87	86	86	85	84
Precipitation Potential (%)	32	30	27	24	22	19	16	16	17	17	17	17	17	21	24	28	31	35	38	39	40	42	43	44
Relative Humidity (%)	94	91	90	90	92	94	97	98	99	100	100	100	100	100	100	100	99	98	97	96	96	97	98	99
Rain	Chc	Chc	Chc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	SChc	--	--	--

English Units Forecast Discussion 7-Day Forecast Hourly Weather Graph Graphical Hazardous Weather Outlook Regional Weather Conditions Past Weather Information Interactive Forecast Map Weather Story Home