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United StatesThe weather in September in Plain
It's pleasantly warm in September in Plain with an average temperature of 22°C. Temperatures this month range from a low of 18°C to a high of 27°C. At night, you can expect temperatures between 9°C and 14°C.
Looking for great weather? September is a good time to be in Plain. 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 Plain, 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 33°C in 2015, Plain reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 5°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of 1°C to a highest value of 20°C.
Precipitation and snowfall
In September, there is an average of 27 mm of precipitation, spread over 5 days. Of the total precipitation, about 0,4 cm falls as snow in September. The wind speed is around 4 Bft, mostly coming from the West.
Daily weather in September for Plain
Click on any day in September to get detailed info about the usual weather on that day in Plain. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Plain | New York | |
|---|---|---|
| Average temperature | 22°C | 27°C |
| Max. temperature | 27°C | 31°C |
| Min. temperature | 9°C | -5°C |
| Total precipitation | 27 mm | 57 mm |
| Rainy days | 5 days | 9 days |
| Total snowfall | 0,4 cm | 0 cm |
| Snowy days | 1 day | 0 days |
Start of September
The month of September starts in Plain with warm temps, averaging around 26°C during the day and nights around 14°C.
Mid September
By mid-September, daytime temps drop to around 22°C, with nights around 12°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of September
By the end of September, the average daytime temperature in Plain is around 21°C, while nighttime temps are about 11°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
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UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Plain for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Plain, Washington. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Plain
Temperature in September in Plain over the years
Precipitation charts
These charts show the average amount of precipitation in September in Plain, 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 Plain
Total precipitation in September in Plain over the years
Daily Snowfall in September in Plain
Snowfall in September in Plain per year
Daily UV index in September in Plain
This chart shows the average daily UV index in September in Plain, 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 Plain
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Average weather in Plain by month
Click on a month below to see detailed weather info for Plain. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.