Point Forecast: 2 Miles NW Sudbury MA  42.39N 71.42W (Elev. 177 ft)	Last Update: 2:44 pm EDT May 22, 2025

[hide menu]

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: 6pm Thu, May 22 20257pm Thu, May 22 20258pm Thu, May 22 20259pm Thu, May 22 202510pm Thu, May 22 202511pm Thu, May 22 202512am Fri, May 23 20251am Fri, May 23 20252am Fri, May 23 20253am Fri, May 23 20254am Fri, May 23 20255am Fri, May 23 20256am Fri, May 23 20257am Fri, May 23 20258am Fri, May 23 20259am Fri, May 23 202510am Fri, May 23 202511am Fri, May 23 202512pm Fri, May 23 20251pm Fri, May 23 20252pm Fri, May 23 20253pm Fri, May 23 20254pm Fri, May 23 20255pm Fri, May 23 20256pm Fri, May 23 20257pm Fri, May 23 20258pm Fri, May 23 20259pm Fri, May 23 202510pm Fri, May 23 202511pm Fri, May 23 202512am Sat, May 24 20251am Sat, May 24 20252am Sat, May 24 20253am Sat, May 24 20254am Sat, May 24 20255am Sat, May 24 20256am Sat, May 24 20257am Sat, May 24 20258am Sat, May 24 20259am Sat, May 24 202510am Sat, May 24 202511am Sat, May 24 202512pm Sat, May 24 20251pm Sat, May 24 20252pm Sat, May 24 20253pm Sat, May 24 20254pm Sat, May 24 20255pm Sat, May 24 20256pm Sat, May 24 20257pm Sat, May 24 20258pm Sat, May 24 20259pm Sat, May 24 202510pm Sat, May 24 202511pm Sat, May 24 202512am Sun, May 25 20251am Sun, May 25 20252am Sun, May 25 20253am Sun, May 25 20254am Sun, May 25 20255am Sun, May 25 20256am Sun, May 25 20257am Sun, May 25 20258am Sun, May 25 20259am Sun, May 25 202510am Sun, May 25 202511am Sun, May 25 202512pm Sun, May 25 20251pm Sun, May 25 20252pm Sun, May 25 20253pm Sun, May 25 20254pm Sun, May 25 20255pm Sun, May 25 20256pm Sun, May 25 20257pm Sun, May 25 20258pm Sun, May 25 20259pm Sun, May 25 202510pm Sun, May 25 202511pm Sun, May 25 202512am Mon, May 26 20251am Mon, May 26 20252am Mon, May 26 20253am Mon, May 26 20254am Mon, May 26 20255am Mon, May 26 20256am Mon, May 26 20257am Mon, May 26 20258am Mon, May 26 20259am Mon, May 26 202510am Mon, May 26 202511am Mon, May 26 202512pm Mon, May 26 20251pm Mon, May 26 20252pm Mon, May 26 20253pm Mon, May 26 20254pm Mon, May 26 20255pm Mon, May 26 20256pm Mon, May 26 20257pm Mon, May 26 20258pm Mon, May 26 20259pm Mon, May 26 202510pm Mon, May 26 202511pm Mon, May 26 202512am Tue, May 27 20251am Tue, May 27 20252am Tue, May 27 20253am Tue, May 27 20254am Tue, May 27 20255am Tue, May 27 2025

Date	05/22						05/23
Hour (EDT)	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17
Temperature (°F)	44	44	45	45	44	44	44	44	44	43	43	43	42	43	44	45	46	48	50	52	53	55	56	56
Dewpoint (°F)	42	42	43	42	42	42	42	42	42	41	41	41	41	41	41	41	40	40	41	41	42	43	43	44
Heat Index (°F)
Surface Wind (mph)	14	15	14	15	15	15	15	15	15	13	13	13	10	10	9	9	9	8	8	7	7	7	7	6
Wind Dir	NE	NE	NE	N	N	N	N	N	N	N	N	NW	NW	NW	NW	NW	NW	NW	NW	W	W	W	W	W
Gust	29	29	29	30	31	32	32	32	29	28	28	25	24	23	22	22
Sky Cover (%)	100	100	100	100	100	100	100	99	99	98	97	96	95	95	94	95	96	97	94	90	87	88	90	91
Precipitation Potential (%)	100	100	100	100	100	96	91	87	82	76	71	65	55	44	34	30	27	23	22	22	21	24	28	31
Relative Humidity (%)	93	93	93	89	93	93	93	93	93	93	93	93	96	93	89	86	79	74	71	66	66	64	62	64
Rain	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Ocnl	Lkly	Lkly	Lkly	Chc	Chc	Chc	Chc	SChc	SChc	SChc	SChc	SChc	Chc	Chc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date							05/24
Hour (EDT)	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17
Temperature (°F)	55	55	53	51	50	50	50	49	49	48	47	47	48	49	50	51	53	54	55	57	58	59	59	59
Dewpoint (°F)	44	45	45	45	46	46	46	45	45	45	44	44	44	45	45	45	45	45	45	45	45	45	45	44
Heat Index (°F)
Surface Wind (mph)	5	3	3	3	3	3	3	3	3	3	5	5	5	6	6	5	6	6	7	7	8	8	7	7
Wind Dir	W	W	SW	W	W	W	W	SW	SW	W	W	W	W	W	W	W	W	W	W	W	W	W	NW	NW
Gust
Sky Cover (%)	93	94	96	97	97	98	97	96	95	94	92	91	88	85	82	80	77	75	73	71	70	69	69	69
Precipitation Potential (%)	36	40	45	45	45	45	40	34	29	27	26	24	26	28	30	28	25	23	23	24	24	24	24	25
Relative Humidity (%)	66	69	74	80	86	86	86	86	86	89	89	89	86	86	83	80	74	71	69	64	62	60	60	57
Rain	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	SChc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	SChc	SChc	SChc	SChc	Chc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

International System of 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