Weather in Massachusetts

Calculated from weather data of Nantucket Memorial Airport (KACK) between 2020 and 2024.

Maximum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	42.0	41.0	47.0	42.0	40.0	43.0
February	42.0	41.0	43.0	45.0	39.0	44.0
March	45.0	47.0	46.0	49.0	46.0	47.0
April	53.0		55.0	55.0	53.0	50.0
May	60.0		61.0	62.0	62.0	59.0
June	69.0		67.0	71.0	72.0	69.0
July	76.0		76.0	80.0	77.0	75.0
August	77.0		74.0	80.0	80.0	77.0
September	72.0		70.0	74.0	75.0	71.0
October	64.0		63.0	66.0	67.0	63.0
November	54.0		51.0	59.0	55.0	58.0
December	46.0		48.0	49.0	51.0	48.0
Average	57.0	43.0	59.0	61.0	60.0	59.0

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	30.0	31	36	28	30	32
February	31.0	31	30	32	29	33
March	33.0	38	36	36	29	36
April	41.0		43	44	40	40
May	48.0		48	51	48	47
June	55.0		56	59	56	59
July	65.0		65	68	63	66
August	66.0		64	69	66	67
September	59.0		58	61	62	57
October	50.0		53	54	58	32
November	42.0		39	47	43	45
December	35.0		38	37	39	37
Average	45.0	33.0	47.0	49.0	47.0	46.0

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Cold and hot days

Number of days	2024	2023	2022	2021	2020
86 °F or warmer	0	1	3	4	1
77 °F or warmer	0	19	50	46	23
68 °F or warmer	0	98	126	131	106
32 °F or colder	37	32	42	53	43

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	14.2	24	19	20	5	2
February	12.6	15	10	15	17	12
March	10.8	14	12	11	6	7
April	9.6		6	6	7	15
May	6.6		3	7	7	5
June	5.1		8	4	3	3
July	2.7		2	2	3	2
August	4.2		6	4	5	4
September	6.4		11	4	4	4
October	10.1		7	14	5	11
November	7.4		4	9	5	8
December	13.6		16	22	11	15
Average	9.1	17.1	8.0	8.6	6.1	6.8

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (miles per hour)

Month	Average	2024	2023	2022	2021	2020
January	14.8	14	14	17	14	14
February	14.4	15	15	14	14	14
March	16.0	17	16	14	12	17
April	14.8		13	15	15	18
May	13.3		14	14	13	14
June	11.1		10	11	12	10
July	10.2		10	11	11	10
August	10.8		11	11	11	12
September	12.3		12	12	13	13
October	13.3		12	13	13	13
November	13.8		13	14	13	13
December	13.6		13	17	12	14
Average	13.3	15.5	12.5	13.1	12.5	13.2

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	NW	NW	NW	NW	W
February	NW	NW	W	NW	W
March	NW	NW	SW	W	N
April		S	SW	W	NW
May		SW	E	W	SW
June		S	S	SW	SW
July		S	SW	SW	SW
August		S	SW	S	SW
September		NE	NW	W	NE
October		W	NE	N	NE
November		W	W	NW	SW
December		W	N	W	W

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.

Massachusetts weather Q&A

What is the warmest month in Massachusetts?

The warmest month is August with an average temperature of 77 °F over the past years.

What is the coldest month in Massachusetts?

The coldest month is January with an average daytime temperature of 42 °F in the past few years.

Which month is the wettest in Massachusetts?

Chance of precipitation is the highest in January with a probability of around 14.2 %.

Which month is the driest in Massachusetts?

The least rainfall and snow can be expected in July. The probability is about 2.7 %.