|
Typical Kennewick September Weather 1991–2020 |
||
|---|---|---|
| Average daily high | 80.8 °F | |
| Average daily low | 48.9 °F | |
| Average monthly precipitation | 0.3 inches | |
| Daily chance of precipitation | 9.7% | |
|
Kennewick September Weather Records 1894–2024 |
||
|---|---|---|
| Highest temperature | 102 °F | September 1, 2022 |
| Lowest temperature | 21 °F | September 24, 1926 |
| Highest daily low | 71 °F | September 1, 1967 |
| Lowest daily high | 50 °F | September 29, 2019 |
| Hottest average high temperature | 87.4 °F | 1943 |
| Coldest average high temperature | 70.9 °F | 1895 |
| Most daily precipitation | 0.9 inches | September 4, 1911 |
| Most monthly precipitation | 1.8 inches | 1927 |
| Day | Average (°F) | Record (°F) | ||
|---|---|---|---|---|
| High | Low | High | Low | |
| September 1 | 85.9 | 53.1 | 102 | 38 |
| September 2 | 85.5 | 52.9 | 100 | 39 |
| September 3 | 85.0 | 52.6 | 99 | 39 |
| September 4 | 84.7 | 52.4 | 100 | 38 |
| September 5 | 84.3 | 52.1 | 99 | 38 |
| September 6 | 84.0 | 51.7 | 98 | 40 |
| September 7 | 83.6 | 51.4 | 99 | 39 |
| September 8 | 83.3 | 51.0 | 97 | 36 |
| September 9 | 82.9 | 50.8 | 100 | 38 |
| September 10 | 82.6 | 50.5 | 97 | 34 |
| September 11 | 82.3 | 50.2 | 98 | 37 |
| September 12 | 81.9 | 49.9 | 97 | 29 |
| September 13 | 81.6 | 49.5 | 96 | 28 |
| September 14 | 81.3 | 49.2 | 95 | 36 |
| September 15 | 81.0 | 48.9 | 96 | 32 |
| September 16 | 80.6 | 48.7 | 97 | 34 |
| September 17 | 80.3 | 48.5 | 95 | 32 |
| September 18 | 79.9 | 48.2 | 97 | 30 |
| September 19 | 79.4 | 47.9 | 97 | 32 |
| September 20 | 79.0 | 47.6 | 94 | 35 |
| September 21 | 78.5 | 47.2 | 94 | 31 |
| September 22 | 78.2 | 47.0 | 95 | 34 |
| September 23 | 77.8 | 46.7 | 93 | 28 |
| September 24 | 77.4 | 46.4 | 93 | 21 |
| September 25 | 76.9 | 46.2 | 93 | 26 |
| September 26 | 76.3 | 45.9 | 92 | 25 |
| September 27 | 75.7 | 45.6 | 89 | 29 |
| September 28 | 75.1 | 45.2 | 89 | 28 |
| September 29 | 74.6 | 45.0 | 88 | 29 |
| September 30 | 74.2 | 44.6 | 87 | 32 |