The weather in September in Pasco

It's warm in September in Pasco with an average temperature of 27°C. Temperatures this month range from a low of 24°C to a high of 31°C. At night, you can expect temperatures between 7°C and 14°C.

Looking for great weather? September is a good time to be in Pasco. 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 Pasco, 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 39°C in 2022, Pasco reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 10°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of 1°C to a highest value of 22°C.

Rainfall amount

According to weather history, there is only 6,8 mm of precipitation in September. The wind speed is around 4 Bft, mostly coming from the Southwest.

Daily weather in September for Pasco

Click on any day in September to get detailed info about the usual weather on that day in Pasco. Check out the historical temperatures and precipitation over the past 10 years on this day.

September weather comparison

  Pasco New York
Average temperature 27°C 27°C
Max. temperature 31°C 31°C
Min. temperature 7°C -5°C
Total precipitation 6,8 mm 57 mm
Rainy days 3 days 9 days

Start of September

The month of September starts in Pasco with hot temps, averaging around 30°C during the day and nights around 13°C.

Mid September

By mid-September, daytime temps drop to around 27°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 Pasco is around 26°C, while nighttime temps are about 10°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 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.

Check out the climate of Pasco for all months and discover the best travel time

Temperature charts

These charts show the average temperatures in September in Pasco, Washington. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.

Daily Temperature in September in Pasco

Temperature in September in Pasco over the years

Precipitation charts

These charts show the average amount of precipitation in September in Pasco, 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 Pasco

Total precipitation in September in Pasco over the years

Daily UV index in September in Pasco

This chart shows the average daily UV index in September in Pasco, 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 Pasco

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Average weather in Pasco by month

Click on a month below to see detailed weather info for Pasco. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.