Point Forecast: Waltham MA  42.38N 71.24W (Elev. 98 ft)	Last Update: 6:30 am EDT Jun 23, 2024

[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 Haines Index Lightning Activity Level 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: 6am Sun, Jun 23 20247am Sun, Jun 23 20248am Sun, Jun 23 20249am Sun, Jun 23 202410am Sun, Jun 23 202411am Sun, Jun 23 202412pm Sun, Jun 23 20241pm Sun, Jun 23 20242pm Sun, Jun 23 20243pm Sun, Jun 23 20244pm Sun, Jun 23 20245pm Sun, Jun 23 20246pm Sun, Jun 23 20247pm Sun, Jun 23 20248pm Sun, Jun 23 20249pm Sun, Jun 23 202410pm Sun, Jun 23 202411pm Sun, Jun 23 202412am Mon, Jun 24 20241am Mon, Jun 24 20242am Mon, Jun 24 20243am Mon, Jun 24 20244am Mon, Jun 24 20245am Mon, Jun 24 20246am Mon, Jun 24 20247am Mon, Jun 24 20248am Mon, Jun 24 20249am Mon, Jun 24 202410am Mon, Jun 24 202411am Mon, Jun 24 202412pm Mon, Jun 24 20241pm Mon, Jun 24 20242pm Mon, Jun 24 20243pm Mon, Jun 24 20244pm Mon, Jun 24 20245pm Mon, Jun 24 20246pm Mon, Jun 24 20247pm Mon, Jun 24 20248pm Mon, Jun 24 20249pm Mon, Jun 24 202410pm Mon, Jun 24 202411pm Mon, Jun 24 202412am Tue, Jun 25 20241am Tue, Jun 25 20242am Tue, Jun 25 20243am Tue, Jun 25 20244am Tue, Jun 25 20245am Tue, Jun 25 20246am Tue, Jun 25 20247am Tue, Jun 25 20248am Tue, Jun 25 20249am Tue, Jun 25 202410am Tue, Jun 25 202411am Tue, Jun 25 202412pm Tue, Jun 25 20241pm Tue, Jun 25 20242pm Tue, Jun 25 20243pm Tue, Jun 25 20244pm Tue, Jun 25 20245pm Tue, Jun 25 20246pm Tue, Jun 25 20247pm Tue, Jun 25 20248pm Tue, Jun 25 20249pm Tue, Jun 25 202410pm Tue, Jun 25 202411pm Tue, Jun 25 202412am Wed, Jun 26 20241am Wed, Jun 26 20242am Wed, Jun 26 20243am Wed, Jun 26 20244am Wed, Jun 26 20245am Wed, Jun 26 20246am Wed, Jun 26 20247am Wed, Jun 26 20248am Wed, Jun 26 20249am Wed, Jun 26 202410am Wed, Jun 26 202411am Wed, Jun 26 202412pm Wed, Jun 26 20241pm Wed, Jun 26 20242pm Wed, Jun 26 20243pm Wed, Jun 26 20244pm Wed, Jun 26 20245pm Wed, Jun 26 20246pm Wed, Jun 26 20247pm Wed, Jun 26 20248pm Wed, Jun 26 20249pm Wed, Jun 26 202410pm Wed, Jun 26 202411pm Wed, Jun 26 202412am Thu, Jun 27 20241am Thu, Jun 27 20242am Thu, Jun 27 20243am Thu, Jun 27 20244am Thu, Jun 27 20245am Thu, Jun 27 20246am Thu, Jun 27 20247am Thu, Jun 27 20248am Thu, Jun 27 20249am Thu, Jun 27 202410am Thu, Jun 27 202411am Thu, Jun 27 202412pm Thu, Jun 27 20241pm Thu, Jun 27 20242pm Thu, Jun 27 20243pm Thu, Jun 27 20244pm Thu, Jun 27 20245pm Thu, Jun 27 2024

Date	06/23																		06/24
Hour (EDT)	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05
Temperature (°F)	64	64	67	69	72	75	79	82	86	87	88	85	85	82	80	78	76	76	75	75	75	75	74	74
Dewpoint (°F)	63	64	66	67	69	72	73	74	74	74	74	73	73	72	72	71	72	71	71	72	71	71	71	70
Heat Index (°F)						75	79	88	94	95	97	92	92	87	84	78	76	76	75	75	75	75
Surface Wind (mph)	3	3	3	5	6	7	8	9	10	11	13	13	13	11	10	10	11	11	11	11	10	10	10	9
Wind Dir	SE	SE	S	S	S	S	S	S	S	S	S	S	S	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW
Gust							21	24	29	29	29	29	28	25	24	24	23	23	22	21	20
Sky Cover (%)	100	99	99	98	88	85	59	39	40	36	58	80	89	85	97	94	95	91	88	84	76	81	85	90
Precipitation Potential (%)	39	34	21	19	16	13	11	10	9	12	15	18	22	27	31	31	31	31	25	20	14	12	11	9
Relative Humidity (%)	97	100	97	93	90	90	82	77	68	65	63	67	67	72	77	79	87	85	87	90	87	87	90	87
Rain	Chc	Chc	SChc	SChc	SChc	--	--	--	--	--	SChc	SChc	SChc	Chc	Chc	Chc	Chc	Chc	Chc	SChc	--	--	--	--
Thunder	--	SChc	SChc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date																			06/25
Hour (EDT)	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05
Temperature (°F)	73	75	76	78	79	80	81	81	81	81	80	78	77	75	73	71	70	68	67	67	66	65	65	65
Dewpoint (°F)	70	71	71	70	68	68	65	65	64	63	63	62	61	61	60	60	61	61	61	61	61	60	60	59
Heat Index (°F)		75	76	78	79	83	83	83	83	82	81	78	77	75
Surface Wind (mph)	9	9	9	9	9	9	10	10	11	11	11	10	10	9	8	7	8	8	8	8	8	8	7	7
Wind Dir	SW	SW	SW	SW	W	W	W	W	W	W	W	W	W	W	W	NW	NW	NW	NW	NW	NW	NW	NW	NW
Gust		20	21	21	21	21	21	22	22	22	21	21	20
Sky Cover (%)	79	67	56	49	42	35	35	34	34	34	34	33	38	42	47	39	38	37	39	42	44	42	39	37
Precipitation Potential (%)	9	9	10	10	10	10	11	12	13	13	13	13	11	10	8	8	8	9	9	9	9	8	7	6
Relative Humidity (%)	90	87	85	76	69	67	58	58	56	54	56	58	58	62	64	68	74	77	80	82	84	83	84	81
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

International System of Units Forecast Discussion 7-Day Forecast Hourly Weather Graph Hazardous Weather Regional Weather Conditions Past Weather Information Interactive Forecast Map Regional Weather Story Home