Weathermondo.com
United StatesThe weather in August in Roselle
It's warm in August in Roselle with an average temperature of 28°C. Temperatures this month range from a low of 26°C to a high of 30°C. At night, you can expect temperatures between 17°C and 20°C.
Looking for great weather? August is a good time to be in Roselle. The temperatures are nice, and there’s not too much 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 Roselle, 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 38°C in 2023, Roselle reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 18°C in 2015. 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 84 mm of precipitation, spread over 11 days. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in August for Roselle
Click on any day in August to get detailed info about the usual weather on that day in Roselle. Check out the historical temperatures and precipitation over the past 10 years on this day.
August weather comparison
| Roselle | New York | |
|---|---|---|
| Average temperature | 28°C | 30°C |
| Max. temperature | 30°C | 31°C |
| Min. temperature | 17°C | -5°C |
| Total precipitation | 84 mm | 79 mm |
| Rainy days | 11 days | 13 days |
Start of August
The month of August starts in Roselle with hot temps, averaging around 29°C during the day and nights around 20°C.
Mid August
By mid-August, daytime temps stay steady at around 29°C, with nights around 20°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of August
By the end of August, the average daytime temperature in Roselle is around 28°C, while nighttime temps are about 19°C. A shower might pop up, but overall, the weather will be dry and sunny.
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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 Roselle for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in August in Roselle, Illinois. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in August in Roselle
Temperature in August in Roselle over the years
Precipitation charts
These charts show the average amount of precipitation in August in Roselle, 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 Roselle
Total precipitation in August in Roselle over the years
Daily UV index in August in Roselle
This chart shows the average daily UV index in August in Roselle, 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 Roselle
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Average weather in Roselle by month
Click on a month below to see detailed weather info for Roselle. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.