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Point Forecast: Chatham MA  41.68N 69.96W (Elev. 4 m)	Last Update: 7:01 am EDT May 14, 2021

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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 Haines Index Lightning Activity Level 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: 7am Fri, May 14 20218am Fri, May 14 20219am Fri, May 14 202110am Fri, May 14 202111am Fri, May 14 202112pm Fri, May 14 20211pm Fri, May 14 20212pm Fri, May 14 20213pm Fri, May 14 20214pm Fri, May 14 20215pm Fri, May 14 20216pm Fri, May 14 20217pm Fri, May 14 20218pm Fri, May 14 20219pm Fri, May 14 202110pm Fri, May 14 202111pm Fri, May 14 202112am Sat, May 15 20211am Sat, May 15 20212am Sat, May 15 20213am Sat, May 15 20214am Sat, May 15 20215am Sat, May 15 20216am Sat, May 15 20217am Sat, May 15 20218am Sat, May 15 20219am Sat, May 15 202110am Sat, May 15 202111am Sat, May 15 202112pm Sat, May 15 20211pm Sat, May 15 20212pm Sat, May 15 20213pm Sat, May 15 20214pm Sat, May 15 20215pm Sat, May 15 20216pm Sat, May 15 20217pm Sat, May 15 20218pm Sat, May 15 20219pm Sat, May 15 202110pm Sat, May 15 202111pm Sat, May 15 202112am Sun, May 16 20211am Sun, May 16 20212am Sun, May 16 20213am Sun, May 16 20214am Sun, May 16 20215am Sun, May 16 20216am Sun, May 16 20217am Sun, May 16 20218am Sun, May 16 20219am Sun, May 16 202110am Sun, May 16 202111am Sun, May 16 202112pm Sun, May 16 20211pm Sun, May 16 20212pm Sun, May 16 20213pm Sun, May 16 20214pm Sun, May 16 20215pm Sun, May 16 20216pm Sun, May 16 20217pm Sun, May 16 20218pm Sun, May 16 20219pm Sun, May 16 202110pm Sun, May 16 202111pm Sun, May 16 202112am Mon, May 17 20211am Mon, May 17 20212am Mon, May 17 20213am Mon, May 17 20214am Mon, May 17 20215am Mon, May 17 20216am Mon, May 17 20217am Mon, May 17 20218am Mon, May 17 20219am Mon, May 17 202110am Mon, May 17 202111am Mon, May 17 202112pm Mon, May 17 20211pm Mon, May 17 20212pm Mon, May 17 20213pm Mon, May 17 20214pm Mon, May 17 20215pm Mon, May 17 20216pm Mon, May 17 20217pm Mon, May 17 20218pm Mon, May 17 20219pm Mon, May 17 202110pm Mon, May 17 202111pm Mon, May 17 202112am Tue, May 18 20211am Tue, May 18 20212am Tue, May 18 20213am Tue, May 18 20214am Tue, May 18 20215am Tue, May 18 20216am Tue, May 18 20217am Tue, May 18 20218am Tue, May 18 20219am Tue, May 18 202110am Tue, May 18 202111am Tue, May 18 202112pm Tue, May 18 20211pm Tue, May 18 20212pm Tue, May 18 20213pm Tue, May 18 20214pm Tue, May 18 20215pm Tue, May 18 20216pm Tue, May 18 2021

Date	05/14																	05/15
Hour (EDT)	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06
Temperature (°C)	11	13	15	16	17	17	17	17	17	16	16	15	14	14	14	13	13	12	12	12	11	11	11	11
Dewpoint (°C)	7	7	7	6	6	6	6	6	6	6	7	7	7	8	8	8	8	8	8	8	8	8	8	8
Wind Chill (°C)
Surface Wind (mph)	7	7	8	8	8	6	5	3	5	6	8	9	8	9	7	8	8	7	6	6	6	3	3	2
Wind Dir	W	W	W	W	NW	NW	NE	SE	SE	S	S	SW	SW	SW	SW	SW	W	W	W	W	W	W	W	W
Gust
Sky Cover (%)	9	5	6	7	7	2	2	2	5	5	5	17	18	18	14	23	29	18	15	12	9	14	12	14
Precipitation Potential (%)	0	0	0	0	0	0	0	0	1	2	3	5	7	5	3	2	2	2	2	2	2	2	2	2
Relative Humidity (%)	77	66	57	53	48	48	48	48	50	51	55	60	62	64	67	69	72	74	74	77	80	80	80	83
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date																		05/16
Hour (EDT)	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06
Temperature (°C)	12	12	14	14	16	16	17	17	17	17	17	16	15	12	12	12	12	12	11	11	11	11	11	11
Dewpoint (°C)	8	8	8	9	9	9	9	9	9	9	9	9	9	9	9	8	8	8	8	8	8	8	8	8
Wind Chill (°C)
Surface Wind (mph)	2	2	2	2	2	2	3	3	5	5	6	6	7	7	7	7	7	7	7	7	7	6	6	6
Wind Dir	NW	NW	NW	NW	S	S	SE	SE	S	S	S	S	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW
Gust
Sky Cover (%)	14	14	24	18	17	15	14	13	14	15	16	18	20	22	24	25	27	30	34	38	42	46	51	47
Precipitation Potential (%)	1	0	0	0	1	1	1	1	4	7	10	8	5	2	1	1	0	0	1	1	1	1	1	2
Relative Humidity (%)	80	77	69	69	64	62	60	60	60	60	60	62	67	80	83	80	80	80	80	80	83	86	86	83
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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