Weathermondo.com
United StatesThe weather in August in Vandalia
It's hot in August in Vandalia with an average temperature of 30°C. Temperatures this month range from a low of 28°C to a high of 31°C. At night, you can expect temperatures between 18°C and 22°C.
Looking for sun? August 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 August 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 37°C in 2023, Vandalia reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 20°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 10°C to a highest value of 26°C.
Rainfall amount
In August, there is an average of 183 mm of precipitation, spread over 18 days. The wind speed is around 3 Bft, mostly coming from the South.
Daily weather in August for Vandalia
Click on any day in August 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.
August weather comparison
| Vandalia | New York | |
|---|---|---|
| Average temperature | 30°C | 30°C |
| Max. temperature | 31°C | 31°C |
| Min. temperature | 18°C | -5°C |
| Total precipitation | 183 mm | 79 mm |
| Rainy days | 18 days | 13 days |
Start of August
The month of August starts in Vandalia with hot temps, averaging around 30°C during the day and nights around 20°C.
Mid August
By mid-August, daytime temps stay steady at around 30°C, with nights around 20°C. There’s a high chance of precipitation during this time.
End of August
By the end of August, the average daytime temperature in Vandalia is around 31°C, while nighttime temps are about 21°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 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 Vandalia for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in August in Vandalia, Illinois. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in August in Vandalia
Temperature in August in Vandalia over the years
Precipitation charts
These charts show the average amount of precipitation in August 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 August in Vandalia
Total precipitation in August in Vandalia over the years
Daily UV index in August in Vandalia
This chart shows the average daily UV index in August 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 August in Vandalia
Have you been to Vandalia in August?
Share your weather experience in August in Vandalia.
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.