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United StatesThe weather in September in Lake Stevens
It's pleasantly warm in September in Lake Stevens with an average temperature of 21°C. Temperatures this month range from a low of 18°C to a high of 24°C. At night, you can expect temperatures between 10°C and 14°C.
Looking for great weather? September is a good time to be in Lake Stevens. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Lake Stevens, Washington. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 31°C in 2017, Lake Stevens reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 12°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of 4°C to a highest value of 18°C.
Rainfall amount
In September, there is an average of 78 mm of precipitation, spread over 11 days. The wind speed is around 3 Bft, mostly coming from the West.
Daily weather in September for Lake Stevens
Click on any day in September to get detailed info about the usual weather on that day in Lake Stevens. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Lake Stevens | New York | |
|---|---|---|
| Average temperature | 21°C | 27°C |
| Max. temperature | 24°C | 31°C |
| Min. temperature | 10°C | -5°C |
| Total precipitation | 78 mm | 57 mm |
| Rainy days | 11 days | 9 days |
Start of September
The month of September starts in Lake Stevens with warm temps, averaging around 24°C during the day and nights around 13°C.
Mid September
By mid-September, daytime temps drop to around 21°C, with nights around 12°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Lake Stevens is around 20°C, while nighttime temps are about 11°C. A shower might pop up, but overall, the weather will be dry and sunny.
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UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Check out the climate of Lake Stevens for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Lake Stevens, Washington. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Lake Stevens
Temperature in September in Lake Stevens over the years
Precipitation charts
These charts show the average amount of precipitation in September in Lake Stevens, Washington. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Lake Stevens
Total precipitation in September in Lake Stevens over the years
Daily UV index in September in Lake Stevens
This chart shows the average daily UV index in September in Lake Stevens, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Lake Stevens
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Average weather in Lake Stevens by month
Click on a month below to see detailed weather info for Lake Stevens. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.