What is the warmest month in Washington?
The warmest month is August with an average temperature of 80 °F over the past years.
Calculated from weather data of Boeing Field/King County International (KBFI) between 2020 and 2024.
Month | Average | 2024 | 2023 | 2022 | 2021 | 2020 |
---|---|---|---|---|---|---|
January | 48.0 | 46.0 | 49.0 | 47.0 | 48.0 | 49.0 |
February | 48.0 | 51.0 | 47.0 | 49.0 | 46.0 | 50.0 |
March | 54.0 | 55.0 | 53.0 | 54.0 | 54.0 | 52.0 |
April | 59.0 | 56.0 | 56.0 | 63.0 | 61.0 | |
May | 68.0 | 71.0 | 62.0 | 65.0 | 69.0 | |
June | 73.0 | 73.0 | 71.0 | 78.0 | 71.0 | |
July | 79.0 | 80.0 | 79.0 | 80.0 | 77.0 | |
August | 80.0 | 80.0 | 82.0 | 78.0 | 79.0 | |
September | 72.0 | 71.0 | 74.0 | 71.0 | 75.0 | |
October | 61.0 | 61.0 | 66.0 | 59.0 | 62.0 | |
November | 52.0 | 51.0 | 48.0 | 53.0 | 52.0 | |
December | 47.0 | 51.0 | 42.0 | 42.0 | 49.0 | |
Average | 61.0 | 51.0 | 62.0 | 61.0 | 62.0 | 62.0 |
Month | Average | 2024 | 2023 | 2022 | 2021 | 2020 |
---|---|---|---|---|---|---|
January | 38.0 | 37 | 38 | 37 | 39 | 41 |
February | 37.0 | 40 | 36 | 38 | 37 | 38 |
March | 39.0 | 42 | 38 | 42 | 38 | 38 |
April | 44.0 | 43 | 41 | 43 | 44 | |
May | 51.0 | 53 | 47 | 49 | 52 | |
June | 55.0 | 52 | 55 | 58 | 55 | |
July | 59.0 | 58 | 60 | 59 | 59 | |
August | 60.0 | 61 | 61 | 59 | 59 | |
September | 56.0 | 53 | 56 | 55 | 58 | |
October | 47.0 | 46 | 50 | 47 | 49 | |
November | 41.0 | 39 | 36 | 44 | 40 | |
December | 38.0 | 40 | 35 | 35 | 38 | |
Average | 46.0 | 40.0 | 47.0 | 47.0 | 47.0 | 48.0 |
Number of days | 2024 | 2023 | 2022 | 2021 | 2020 |
---|---|---|---|---|---|
86 °F or warmer | 0 | 8 | 14 | 12 | 9 |
77 °F or warmer | 0 | 61 | 51 | 60 | 54 |
68 °F or warmer | 3 | 132 | 122 | 120 | 121 |
32 °F or colder | 10 | 27 | 24 | 13 | 12 |
Month | Average | 2024 | 2023 | 2022 | 2021 | 2020 |
---|---|---|---|---|---|---|
January | 19.2 | 22 | 15 | 14 | 22 | 33 |
February | 16.9 | 14 | 11 | 13 | 18 | 12 |
March | 12.0 | 11 | 7 | 11 | 10 | 9 |
April | 11.3 | 20 | 8 | 5 | 5 | |
May | 6.3 | 4 | 14 | 4 | 9 | |
June | 6.1 | 5 | 9 | 6 | 13 | |
July | 1.2 | 0 | 2 | 0 | 1 | |
August | 1.3 | 1 | 3 | 0 | 1 | |
September | 5.6 | 7 | 2 | 6 | 6 | |
October | 8.8 | 9 | 6 | 15 | 4 | |
November | 16.8 | 8 | 19 | 26 | 17 | |
December | 18.1 | 23 | 12 | 18 | 17 | |
Average | 10.3 | 15.4 | 8.7 | 9.0 | 9.8 | 9.9 |
Month | Average | 2024 | 2023 | 2022 | 2021 | 2020 |
---|---|---|---|---|---|---|
January | 5.7 | 5 | 5 | 5 | 5 | 8 |
February | 6.5 | 6 | 7 | 6 | 8 | 6 |
March | 6.5 | 6 | 7 | 6 | 7 | 7 |
April | 7.1 | 8 | 7 | 6 | 6 | |
May | 5.6 | 5 | 6 | 6 | 6 | |
June | 5.6 | 5 | 5 | 6 | 6 | |
July | 5.3 | 5 | 5 | 5 | 6 | |
August | 5.5 | 5 | 6 | 6 | 5 | |
September | 5.7 | 5 | 6 | 6 | 5 | |
October | 5.8 | 5 | 5 | 7 | 6 | |
November | 5.8 | 4 | 5 | 7 | 7 | |
December | 5.3 | 4 | 4 | 7 | 6 | |
Average | 5.8 | 5.7 | 5.5 | 5.4 | 6.2 | 6.2 |
Month | 2024 | 2023 | 2022 | 2021 | 2020 |
---|---|---|---|---|---|
January | S | SE | S | SE | S |
February | S | S | S | S | S |
March | S | S | S | S | S |
April | S | S | SW | SW | |
May | SW | S | SW | SW | |
June | SW | SW | SW | S | |
July | SW | W | W | SW | |
August | W | SW | SW | W | |
September | S | W | SW | SW | |
October | S | SW | S | S | |
November | S | S | S | S | |
December | SE | SE | S | S |
The warmest month is August with an average temperature of 80 °F over the past years.
The coldest month is December with an average daytime temperature of 47 °F in the past few years.
Chance of precipitation is the highest in January with a probability of around 19.2 %.
The least rainfall and snow can be expected in July. The probability is about 1.3 %.