Average weather for Sumner in August
It's warm in August in Sumner with an average temperature of 26°C. Temperatures this month range from a low of 22°C to a high of 28°C. At night, you can expect temperatures between 12°C and 15°C.
Start of August
The month of August starts in Sumner with hot temps, averaging around 27°C during the day and nights around 15°C. There’s little chance of precipitation. The weather’s mostly sunny and dry.
With the temperature difference between day and night, it’s smart to wear layers.
Mid August
By mid-August, daytime temps stay steady at around 27°C, with nights around 15°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
Since it cools down at night, it’s a good idea to wear layers.
End of August
By the end of August, the average daytime temperature in Sumner is around 25°C, while nighttime temps are about 14°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
In August, there is an average of 31 mm of precipitation, spread over 4 days. The wind speed is around 3 Bft, mostly coming from the South.
Sumner in August |
New York | ||
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26°C | 30°C | |
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28°C | 31°C | |
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22°C | -5°C | |
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31 mm | 79 mm | |
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4 days | 13 days |
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is August a good time to visit Sumner?
Looking for great weather? August is a good time to be in Sumner. The temperatures are nice, and there’s not too much rain.
Temperature records
With 36°C in 2020, Sumner reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 17°C in 2016. The extreme nighttime temperatures ranged from a lowest recorded value of 7°C to a highest value of 21°C.
Check out the climate of Sumner for all months and discover the best travel time
Daily Temperature in August in Sumner
This chart shows the average daily high and low temperatures in August for Sumner, 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 August in Sumner
The chart below shows the average daily precipitation in August for Sumner, 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 August, you can expect about 4 days of precipitation in Sumner.
Daily UV index in August in Sumner
This chart shows the average daily UV index in August in Sumner, 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 August in Sumner over the years
This chart shows the average temperature in August in Sumner, measured in degrees Celsius, over the past few years.
Total precipitation in August in Sumner over the years
This chart shows the average precipitation in August in Sumner, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in August for Sumner
Click on any day in August to get detailed info about the usual weather on that day in Sumner. Check out the historical temperatures and precipitation over the past 10 years on this day.































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