Mild
Average highs are around 22°C, so days are mild rather than hot.
September verdict
Mixed for holiday weather
Average highs are around 22°C, so days are mild rather than hot. Sunshine averages 7.2h per day, enough for a balanced month. Rainfall averages 17mm, which is relatively low for holiday planning.
Monthly averages
Temp
22°C
Rain
17mm
Sun
7.2h
Weather score
54
Mixed
Mild
Average highs are around 22°C, so days are mild rather than hot.
Drier
Rainfall averages 17mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 7.2h per day, enough for a balanced month.
Map
Compare Chelan, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
September22°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
September17mm average rain
September sits on the drier side of Chelan's year, which helps with sightseeing and transfers.
Driest monthsFebruary to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
September7.2 hours average sun
September sits close to Chelan's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
September54 weather score
September sits close to Chelan's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
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