The weather in May in Vandalia

It's warm in May in Vandalia with an average temperature of 25°C. Temperatures this month range from a low of 19°C to a high of 29°C. At night, you can expect temperatures between 9°C and 19°C.

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

Average temperatures and precipitation

This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in May for Vandalia, Illinois. 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 35°C in 2018, Vandalia reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 10°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 1°C to a highest value of 23°C.

Rainfall amount

In May, there is an average of 109 mm of precipitation, spread over 14 days. The wind speed is around 4 Bft, mostly coming from the South.

Daily weather in May for Vandalia

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

May weather comparison

  Vandalia New York
Average temperature 25°C 22°C
Max. temperature 29°C 28°C
Min. temperature 9°C -5°C
Total precipitation 109 mm 105 mm
Rainy days 14 days 14 days

Start of May

The month of May starts in Vandalia with warm temps, averaging around 23°C during the day and nights around 13°C.

Mid May

By mid-May, daytime temps stay steady at around 23°C, with nights around 14°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.

End of May

By the end of May, the average daytime temperature in Vandalia is around 28°C, while nighttime temps are about 18°C. A shower might pop up, but overall, the weather will be dry and sunny.

Find affordable trips to Vandalia

UV index

The UV index is a maximum of 3 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.

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

Temperature charts

These charts show the average temperatures in May in Vandalia, Illinois. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.

Daily Temperature in May in Vandalia

Temperature in May in Vandalia over the years

Precipitation charts

These charts show the average amount of precipitation in May in Vandalia, Illinois. 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 May in Vandalia

Total precipitation in May in Vandalia over the years

Daily UV index in May in Vandalia

This chart shows the average daily UV index in May in Vandalia, 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 May in Vandalia

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Average weather in Vandalia by month

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