Leavenworth, Washington weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Excellent
Best time to visit: May – June, September
What is the weather like in Leavenworth, Washington in September?
In September, Leavenworth, Washington is warm: daytime highs average 24 °C, and nights cool down to about 11 °C. The sun shines for around 8 hours a day. Rain is rare: about 4 days bring 24 mm in total. All in all, September is an excellent month for a holiday in Leavenworth, Washington.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 69 | 96 | 70 |
| Day | 29° | 24° | 15° |
| Night | 15° | 11° | 6° |
| Sun | 11 h | 8 h | 5 h |
| Rain days | 2 | 4 | 9 |
More details for September
- Daylight
- 12 h 39 min06:38 – 19:18
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 10 km/haverage daily peakAll months
- Cloud cover
- 42 %on averageAll months
- Hot days
- 4 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC−7America/Los_Angeles
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %87 %
- Few rainy daysweight 30 %97 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Mountain air”.
What to pack in September
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
Leavenworth, Washington in September: quick answers
Is Leavenworth, Washington hot in September?
Warm rather than hot: in September, daytime highs in Leavenworth, Washington average 24 °C and nights cool to about 11 °C. On about 4 days the thermometer climbs to 30 °C or more.
Does it rain much in Leavenworth, Washington in September?
Rain is rare: about 4 days bring 24 mm in total.
Leavenworth, Washington month by month
The whole year in Leavenworth, WashingtonAll destinations: USAWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences