Point Forecast: Merrimac MA  42.84N 70.99W (Elev. 98 ft)	Last Update: 3:44 am EDT Mar 10, 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) Dispersion Index Ceiling Height Visibility Thunder Potential

48-Hour Period Starting: 11am Tue, Mar 10 202612pm Tue, Mar 10 20261pm Tue, Mar 10 20262pm Tue, Mar 10 20263pm Tue, Mar 10 20264pm Tue, Mar 10 20265pm Tue, Mar 10 20266pm Tue, Mar 10 20267pm Tue, Mar 10 20268pm Tue, Mar 10 20269pm Tue, Mar 10 202610pm Tue, Mar 10 202611pm Tue, Mar 10 202612am Wed, Mar 11 20261am Wed, Mar 11 20262am Wed, Mar 11 20263am Wed, Mar 11 20264am Wed, Mar 11 20265am Wed, Mar 11 20266am Wed, Mar 11 20267am Wed, Mar 11 20268am Wed, Mar 11 20269am Wed, Mar 11 202610am Wed, Mar 11 202611am Wed, Mar 11 202612pm Wed, Mar 11 20261pm Wed, Mar 11 20262pm Wed, Mar 11 20263pm Wed, Mar 11 20264pm Wed, Mar 11 20265pm 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 2026

Date	03/10													03/11
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 (°F)	61	65	67	69	70	72	66	61	56	53	51	49	47	46	45	44	44	44	44	42	41	39	40	40
Dewpoint (°F)	44	45	45	45	46	47	48	47	48	48	47	47	47	45	45	44	43	42	41	39	38	36	37	36
Wind Chill (°F)												47	45	45	44	42	41	41	40	37	35	32	33	33
Surface Wind (mph)	6	6	7	7	8	8	7	6	5	5	5	5	5	3	3	3	5	6	7	8	9	11	10	10
Wind Dir	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	W	W	N	NE	NE	NE	NE	NE	NE	NE
Gust
Sky Cover (%)	14	16	16	15	4	4	17	29	41	53	54	54	54	62	69	77	85	92	100	100	100	100	100	100
Precipitation Potential (%)	1	1	1	1	2	2	2	2	2	2	2	2	2	7	9	6	13	20	27	26	25	24	25	25
Relative Humidity (%)	53	48	45	42	42	41	52	60	74	83	86	93	100	96	100	100	96	93	89	89	89	89	89	85
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	SChc	Chc	Chc	Chc	SChc	Chc	Chc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date														03/12
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 (°F)	41	41	40	40	40	41	42	43	44	45	46	47	48	48	49	49	50	51	52	52	52	52	53	54
Dewpoint (°F)	36	36	37	38	38	38	39	39	39	41	42	43	44	45	47	48	49	50	51	50	48	47	46	44
Wind Chill (°F)	35	35	35	35	35	37	38	40	41	42	43	44	45	45	46	46	47
Surface Wind (mph)	10	9	8	7	7	6	6	5	5	6	6	7	7	7	8	8	8	9	9	9	9	10	11	11
Wind Dir	NE	NE	NE	NE	E	E	E	E	E	S	S	S	S	S	S	S	S	SW	SW	SW	SW	SW	W	W
Gust																						20	21	23
Sky Cover (%)	100	100	100	100	99	98	97	96	95	94	94	94	94	91	89	86	83	79	76	79	81	84	81	79
Precipitation Potential (%)	26	27	28	29	29	32	35	37	40	43	47	50	53	52	50	49	47	46	45	43	42	40	39	38
Relative Humidity (%)	82	82	89	92	92	89	89	86	82	86	86	86	86	89	93	96	96	96	96	93	86	83	77	69
Rain	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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