Weather in Grays Harbor County

Calculated from weather data of Bowerman Airport (KHQM) between 2020 and 2024.

Maximum temperatures (°F)

Month	Average	2024	2023	2022	2021	2020
January	49.0	47.0	51.0	50.0	48.0	48.0
February	48.0	50.0	48.0	51.0	45.0	49.0
March	52.0	53.0	51.0	53.0	50.0	49.0
April	56.0		55.0	54.0	58.0	56.0
May	61.0		65.0	58.0	59.0	63.0
June	66.0		65.0	66.0	70.0	63.0
July	69.0		70.0	69.0	69.0	67.0
August	71.0		74.0	74.0	69.0	69.0
September	69.0		67.0	72.0	68.0	71.0
October	61.0		61.0	66.0	59.0	59.0
November	52.0		51.0	51.0	53.0	51.0
December	48.0		50.0	44.0	45.0	49.0
Average	57.0	50.0	59.0	59.0	58.0	58.0

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	40.0	39	42	40	40	42
February	38.0	40	39	40	38	38
March	40.0	40	39	44	38	37
April	43.0		44	42	42	43
May	49.0		51	47	47	49
June	53.0		52	54	55	52
July	56.0		56	57	56	53
August	57.0		59	59	56	55
September	54.0		51	56	54	56
October	47.0		47	51	48	48
November	42.0		39	39	46	41
December	40.0		42	38	38	41
Average	46.0	40.0	47.0	48.0	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	7	6	3	3
77 °F or warmer	0	14	22	14	13
68 °F or warmer	1	73	76	60	46
32 °F or colder	6	15	7	17	13

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	25.4	34	21	23	27	35
February	23.6	31	24	19	32	17
March	18.7	23	22	20	16	13
April	17.5		26	18	5	6
May	9.3		3	21	6	13
June	8.0		4	16	10	7
July	2.2		3	3	1	3
August	2.1		4	0	3	4
September	5.8		8	3	11	3
October	13.1		15	13	17	10
November	20.3		14	18	33	28
December	20.9		22	19	22	20
Average	14.8	28.9	13.1	13.9	13.8	12.0

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	11.4	12	11	11	10	14
February	10.6	11	12	10	12	10
March	10.2	10	11	9	12	10
April	10.8		11	11	10	10
May	9.5		10	10	10	10
June	9.7		10	10	9	10
July	8.9		9	8	9	9
August	8.7		9	8	9	9
September	8.5		8	8	9	9
October	9.2		9	8	11	9
November	10.5		9	11	13	10
December	10.0		9	8	11	11
Average	9.9	10.7	9.6	9.4	10.2	10.0

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	SE	SE	SE	SE	S
February	SE	SW	S	W	W
March	SE	SE	SW	SW	SW
April		S	SW	W	W
May		W	W	W	W
June		W	SW	W	W
July		W	W	W	W
August		W	W	W	W
September		SW	SW	SW	S
October		SE	SW	S	W
November		SE	SE	S	S
December		E	E	E	SE

Prevailing wind direction

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

Grays Harbor County weather Q&A

What is the warmest month in Grays Harbor County?

The warmest month is August with an average temperature of 71 °F over the past years.

What is the coldest month in Grays Harbor County?

The coldest month is December with an average daytime temperature of 48 °F in the past few years.

Which month is the wettest in Grays Harbor County?

Chance of precipitation is the highest in January with a probability of around 25.5 %.

Which month is the driest in Grays Harbor County?

The least rainfall and snow can be expected in August. The probability is about 2.1 %.