Average weather for Yakima in September
It's warm in September in Yakima with an average temperature of 26°C. Temperatures this month range from a low of 22°C to a high of 30°C. At night, you can expect temperatures between 7°C and 12°C.
Start of September
The month of September starts in Yakima with hot temps, averaging around 30°C during the day and nights around 11°C. There’s little chance of precipitation. The weather’s mostly sunny and dry.
Mid September
By mid-September, daytime temps drop to around 26°C, with nights around 10°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 Yakima is around 24°C, while nighttime temps are about 8°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
According to weather history, there is only 7,1 mm of precipitation in September. The wind speed is around 4 Bft, mostly coming from the West.
Yakima in September |
New York | ||
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26°C | 27°C | |
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30°C | 31°C | |
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22°C | -5°C | |
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7,1 mm | 57 mm | |
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2 days | 9 days |
UV index
The UV index is a maximum of 6 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.
Is September a good time to visit Yakima?
Looking for great weather? September is a good time to be in Yakima. The temperatures are nice, and there’s not too much rain.
Temperature records
With 38°C in 2017, Yakima reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 6°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of 0°C to a highest value of 19°C.
Check out the climate of Yakima for all months and discover the best travel time
Daily Temperature in September in Yakima
This chart shows the average daily high and low temperatures in September for Yakima, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Yakima
The chart below shows the average daily precipitation in September for Yakima, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 2 days of precipitation in Yakima.
Daily UV index in September in Yakima
This chart shows the average daily UV index in September in Yakima, 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.
Temperature in September in Yakima over the years
This chart shows the average temperature in September in Yakima, measured in degrees Celsius, over the past few years.
Total precipitation in September in Yakima over the years
This chart shows the average precipitation in September in Yakima, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Yakima
Click on any day in September to get detailed info about the usual weather on that day in Yakima. Check out the historical temperatures and precipitation over the past 10 years on this day.






























Weather experiences in September in Yakima
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Average weather in Yakima by month
Click on a month below to see detailed weather info for Yakima. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.