Bellevue Weather in September
September in Bellevue brings pleasant temperatures, with daytime highs of 22°C (72°F) and nights around 11°C (52°F). The perfect weather makes it a solid choice for a visit.
Rainfall in Bellevue in September
Historically, September sees about 10 days of rain, with a monthly average of 56 mm (2.2 in). Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Bellevue in September
Bellevue in September is worth a visit. The temperature is perfect, with 22°C (72°F) during the day and 11°C (52°F) at night. This month falls in the summer season. Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 11°C (52°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Bellevue in September
The month enjoys around 220 hours of sunshine, creating mostly sunny days with good weather conditions.
Wind Speed in Bellevue in September
Wind speeds average 4 m/s (8 knots) during September. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August and September typically offer the best weather for Bellevue.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Bellevue's climate page.
Bellevue Temperature in September
Min Temperature
11°C (52°F)
Max Temperature
22°C (72°F)
Chance of Rain
34%
Precipitation
56 mm (2.2 in)
Rainy days
10 days
Humidity
73% *
Windspeed
4 m/s (8 knots) *
Sunshine
220 hours *
Percentage Sunshine
59% *
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
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What to Wear in Bellevue in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Bellevue in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Bellevue's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Bellevue climate overview or explore weather in the United States of America.
