Point Forecast: Waltham MA  42.38N 71.24W (Elev. 98 ft)	Last Update: 6:21 pm EDT Mar 20, 2025

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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: 6pm Thu, Mar 20 20257pm Thu, Mar 20 20258pm Thu, Mar 20 20259pm Thu, Mar 20 202510pm Thu, Mar 20 202511pm Thu, Mar 20 202512am Fri, Mar 21 20251am Fri, Mar 21 20252am Fri, Mar 21 20253am Fri, Mar 21 20254am Fri, Mar 21 20255am Fri, Mar 21 20256am Fri, Mar 21 20257am Fri, Mar 21 20258am Fri, Mar 21 20259am Fri, Mar 21 202510am Fri, Mar 21 202511am Fri, Mar 21 202512pm Fri, Mar 21 20251pm Fri, Mar 21 20252pm Fri, Mar 21 20253pm Fri, Mar 21 20254pm Fri, Mar 21 20255pm Fri, Mar 21 20256pm Fri, Mar 21 20257pm Fri, Mar 21 20258pm Fri, Mar 21 20259pm Fri, Mar 21 202510pm Fri, Mar 21 202511pm Fri, Mar 21 202512am Sat, Mar 22 20251am Sat, Mar 22 20252am Sat, Mar 22 20253am Sat, Mar 22 20254am Sat, Mar 22 20255am Sat, Mar 22 20256am Sat, Mar 22 20257am Sat, Mar 22 20258am Sat, Mar 22 20259am Sat, Mar 22 202510am Sat, Mar 22 202511am Sat, Mar 22 202512pm Sat, Mar 22 20251pm Sat, Mar 22 20252pm Sat, Mar 22 20253pm Sat, Mar 22 20254pm Sat, Mar 22 20255pm Sat, Mar 22 20256pm Sat, Mar 22 20257pm Sat, Mar 22 20258pm Sat, Mar 22 20259pm Sat, Mar 22 202510pm Sat, Mar 22 202511pm Sat, Mar 22 202512am Sun, Mar 23 20251am Sun, Mar 23 20252am Sun, Mar 23 20253am Sun, Mar 23 20254am Sun, Mar 23 20255am Sun, Mar 23 20256am Sun, Mar 23 20257am Sun, Mar 23 20258am Sun, Mar 23 20259am Sun, Mar 23 202510am Sun, Mar 23 202511am Sun, Mar 23 202512pm Sun, Mar 23 20251pm Sun, Mar 23 20252pm Sun, Mar 23 20253pm Sun, Mar 23 20254pm Sun, Mar 23 20255pm Sun, Mar 23 20256pm Sun, Mar 23 20257pm Sun, Mar 23 20258pm Sun, Mar 23 20259pm Sun, Mar 23 202510pm Sun, Mar 23 202511pm Sun, Mar 23 202512am Mon, Mar 24 20251am Mon, Mar 24 20252am Mon, Mar 24 20253am Mon, Mar 24 20254am Mon, Mar 24 20255am Mon, Mar 24 20256am Mon, Mar 24 20257am Mon, Mar 24 20258am Mon, Mar 24 20259am Mon, Mar 24 202510am Mon, Mar 24 202511am Mon, Mar 24 202512pm Mon, Mar 24 20251pm Mon, Mar 24 20252pm Mon, Mar 24 20253pm Mon, Mar 24 20254pm Mon, Mar 24 20255pm Mon, Mar 24 20256pm Mon, Mar 24 20257pm Mon, Mar 24 20258pm Mon, Mar 24 20259pm Mon, Mar 24 202510pm Mon, Mar 24 202511pm Mon, Mar 24 202512am Tue, Mar 25 20251am Tue, Mar 25 20252am Tue, Mar 25 20253am Tue, Mar 25 20254am Tue, Mar 25 20255am Tue, Mar 25 2025

Date	03/20						03/21
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)	54	53	50	49	47	46	46	46	45	46	46	45	45	44	45	45	44	44	45	47	47	47	48	47
Dewpoint (°F)	47	47	46	45	44	43	44	43	43	43	44	43	43	43	43	42	41	39	36	34	32	30	28	26
Wind Chill (°F)			46	45	44	45	44	43	42	44	44	42	42	42	41	40	38	37	39	40	40	40	42	40
Surface Wind (mph)	7	7	6	5	5	3	3	5	5	3	3	5	6	3	8	10	13	15	15	16	16	16	17	17
Wind Dir	SE	SE	SE	SE	S	S	S	SE	SE	SE	E	E	NE	N	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW
Gust																20		25	28	29	30	31	31	31
Sky Cover (%)	73	87	92	91	92	96	95	95	95	96	97	98	98	97	94	89	89	83	75	64	56	46	35	25
Precipitation Potential (%)	7	9	7	8	11	12	22	31	41	50	78	83	80	65	51	36	27	17	13	11	8	7	6	4
Relative Humidity (%)	78	86	85	85	91	88	94	91	94	91	94	94	94	97	91	88	88	82	69	61	56	52	45	43
Rain	--	--	--	--	--	--	SChc	Chc	Chc	Chc	Ocnl	Ocnl	Ocnl	Lkly	Chc	Chc	Chc	SChc	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date							03/22
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)	46	44	43	42	41	40	40	39	38	38	37	36	36	36	38	41	46	51	54	57	58	58	58	57
Dewpoint (°F)	23	21	20	22	21	21	21	21	21	21	21	21	22	22	23	25	27	29	29	30	30	31	32	33
Wind Chill (°F)	39	37	37	35	34	34	33	33	32	32	32	32	31	32	34	36	41
Surface Wind (mph)	16	15	13	13	11	9	9	8	8	7	7	6	6	6	6	7	9	10	11	11	13	13	11	11
Wind Dir	NW	NW	NW	NW	NW	NW	NW	W	W	W	W	W	W	W	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW
Gust	30	28	26	24	22	20													21	22	24	24	23	23
Sky Cover (%)	22	18	15	13	10	8	8	8	8	11	14	17	24	31	39	42	44	47	49	52	55	56	57	59
Precipitation Potential (%)	3	3	3	4	4	4	3	3	3	2	2	1	1	1	1	1	0	0	1	3	4	5	6	8
Relative Humidity (%)	40	39	39	44	44	46	47	48	49	51	52	53	56	55	54	52	47	42	38	35	34	36	37	40
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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