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Point Forecast: Westford MA  42.59N 71.44W (Elev. 312 ft)	Last Update: 7:12 pm EDT May 20, 2022

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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: 8pm Fri, May 20 20229pm Fri, May 20 202210pm Fri, May 20 202211pm Fri, May 20 202212am Sat, May 21 20221am Sat, May 21 20222am Sat, May 21 20223am Sat, May 21 20224am Sat, May 21 20225am Sat, May 21 20226am Sat, May 21 20227am Sat, May 21 20228am Sat, May 21 20229am Sat, May 21 202210am Sat, May 21 202211am Sat, May 21 202212pm Sat, May 21 20221pm Sat, May 21 20222pm Sat, May 21 20223pm Sat, May 21 20224pm Sat, May 21 20225pm Sat, May 21 20226pm Sat, May 21 20227pm Sat, May 21 20228pm Sat, May 21 20229pm Sat, May 21 202210pm Sat, May 21 202211pm Sat, May 21 202212am Sun, May 22 20221am Sun, May 22 20222am Sun, May 22 20223am Sun, May 22 20224am Sun, May 22 20225am Sun, May 22 20226am Sun, May 22 20227am Sun, May 22 20228am Sun, May 22 20229am Sun, May 22 202210am Sun, May 22 202211am Sun, May 22 202212pm Sun, May 22 20221pm Sun, May 22 20222pm Sun, May 22 20223pm Sun, May 22 20224pm Sun, May 22 20225pm Sun, May 22 20226pm Sun, May 22 20227pm Sun, May 22 20228pm Sun, May 22 20229pm Sun, May 22 202210pm Sun, May 22 202211pm Sun, May 22 202212am Mon, May 23 20221am Mon, May 23 20222am Mon, May 23 20223am Mon, May 23 20224am Mon, May 23 20225am Mon, May 23 20226am Mon, May 23 20227am Mon, May 23 20228am Mon, May 23 20229am Mon, May 23 202210am Mon, May 23 202211am Mon, May 23 202212pm Mon, May 23 20221pm Mon, May 23 20222pm Mon, May 23 20223pm Mon, May 23 20224pm Mon, May 23 20225pm Mon, May 23 20226pm Mon, May 23 20227pm Mon, May 23 20228pm Mon, May 23 20229pm Mon, May 23 202210pm Mon, May 23 202211pm Mon, May 23 202212am Tue, May 24 20221am Tue, May 24 20222am Tue, May 24 20223am Tue, May 24 20224am Tue, May 24 20225am Tue, May 24 20226am Tue, May 24 20227am Tue, May 24 20228am Tue, May 24 20229am Tue, May 24 202210am Tue, May 24 202211am Tue, May 24 202212pm Tue, May 24 20221pm Tue, May 24 20222pm Tue, May 24 20223pm Tue, May 24 20224pm Tue, May 24 20225pm Tue, May 24 20226pm Tue, May 24 20227pm Tue, May 24 20228pm Tue, May 24 20229pm Tue, May 24 202210pm Tue, May 24 202211pm Tue, May 24 202212am Wed, May 25 20221am Wed, May 25 20222am Wed, May 25 20223am Wed, May 25 20224am Wed, May 25 20225am Wed, May 25 20226am Wed, May 25 20227am Wed, May 25 2022

Date	05/20				05/21
Hour (EDT)	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19
Temperature (°F)	68	66	64	62	61	61	61	61	60	61	62	63	65	69	73	78	82	86	90	93	93	93	91	87
Dewpoint (°F)	55	56	56	57	57	58	58	58	58	58	59	60	61	63	64	65	65	66	65	65	65	65	66	66
Heat Index (°F)																78	84	88	92	95	95	95	94	89
Surface Wind (mph)	7	7	7	6	6	6	6	3	3	3	2	3	5	5	5	5	5	5	6	6	7	7	7	6
Wind Dir	S	S	S	S	S	S	S	S	SE	SE	SE	S	S	S	SW	SW	SW	SW	SW	SW	SW	SW	SW	S
Gust
Sky Cover (%)	73	80	86	93	91	89	87	87	87	87	83	79	75	71	68	64	53	41	30	24	17	11	14	18
Precipitation Potential (%)	3	10	16	19	21	18	15	13	10	8	6	4	2	2	1	1	3	5	7	6	4	3	5	6
Relative Humidity (%)	63	70	75	84	87	90	90	90	93	90	90	90	87	81	73	64	56	51	44	40	40	40	44	50
Rain	--	--	SChc	SChc	SChc	SChc	SChc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date					05/22
Hour (EDT)	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19
Temperature (°F)	84	81	78	77	75	74	73	71	70	70	71	74	78	81	85	88	91	93	94	94	94	92	90	86
Dewpoint (°F)	67	67	68	68	67	66	65	65	66	66	66	66	66	66	66	67	65	64	63	62	62	62	63	63
Heat Index (°F)	87	83	78	77	75								77	83	87	91	93	95	95	95	95	93	91	87
Surface Wind (mph)	6	5	5	3	3	3	3	3	2	2	3	3	5	6	7	8	9	10	11	11	13	13	11	11
Wind Dir	S	S	S	SW	SW	SW	SW	SW	SW	SW	SW	S	S	S	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW
Gust																			21	22		23	22	21
Sky Cover (%)	21	19	16	14	18	21	25	24	24	23	24	26	27	20	12	5	7	8	10	13	26	31	33	49
Precipitation Potential (%)	8	6	4	2	4	5	7	6	4	3	3	3	3	4	6	7	6	6	5	10	16	21	23	25
Relative Humidity (%)	57	63	71	74	76	76	76	81	87	87	84	76	69	60	53	50	42	38	36	35	35	37	41	46
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	SChc	Chc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	SChc	--

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