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Normal weather for Union in September

It's hot in September in Union with an average temperature of 33°C. Temperatures this month range from a low of 32°C to a high of 34°C. At night, you can expect temperatures between 24°C and 26°C.

In September, there is an average of 155 mm of precipitation, spread over 19 days. The wind speed is around 4 Bft, mostly coming from the Southeast.

Union in September

New York
Temperature Average Temperature
33°C 27°C
Sun High Temp
34°C 31°C
Sun Low Temp
32°C 21°C
Rain Total Precipitation
155 mm 57 mm
Rain Rainy Days
19 days 9 days

Start of September

The month of September starts in Union with hot temps, averaging around 33°C during the day and nights around 25°C. There are plenty of days with a good chance of precipitation. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.

Mid September

By mid-September, daytime temps rise to around 34°C, with nights around 25°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.

End of September

By the end of September, the average daytime temperature in Union is around 33°C, while nighttime temps are about 25°C. There’s a significant chance of many days with precipitation. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.

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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 September a good time to visit Union?

Looking for sun? September isn’t a good month to be in Union. The temperature is nice, but there’s too much chance of rain.

The hurricane season in Union runs from June to November.

Temperature records for Union in September

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

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Daily Temperature in September in Union

This chart shows the average daily high and low temperatures in September for Union, 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 Temperature in September in Union

Daily Precipitation in September in Union

The chart below shows the average daily precipitation in September for Union, 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 19 days of precipitation in Union.

Daily Precipitation in September in Union

Daily UV Index in September in Union

This chart shows the average daily UV index in September in Union, 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.

Daily UV Index in September in Union

Temperature in September in Union Over the Years

This chart shows the average temperature in September in Union, measured in degrees Celsius, over the past few years.

Temperature in September in Union Over the Years

Total Precipitation in September in Union Over the Years

This chart shows the average precipitation in September in Union, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.

Precipitation in September in Union Over the Years

Daily Climate in September for Union

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

Weather experiences in September in Union

Have you been to Union in September?

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Average Weather in Union by Month

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


Or check out the climate of Union for all months at once

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