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United StatesThe weather in September in Oak Grove
It's warm in September in Oak Grove with an average temperature of 27°C. Temperatures this month range from a low of 22°C to a high of 30°C. At night, you can expect temperatures between 10°C and 18°C.
Looking for sun? September isn’t a good month to be in Oak Grove. 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 September for Oak Grove, 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 2022, Oak Grove reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 12°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of 1°C to a highest value of 25°C.
Rainfall amount
In September, there is an average of 200 mm of precipitation, spread over 19 days. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in September for Oak Grove
Click on any day in September to get detailed info about the usual weather on that day in Oak Grove. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Oak Grove | New York | |
|---|---|---|
| Average temperature | 27°C | 27°C |
| Max. temperature | 30°C | 31°C |
| Min. temperature | 10°C | -5°C |
| Total precipitation | 200 mm | 57 mm |
| Rainy days | 19 days | 9 days |
Start of September
The month of September starts in Oak Grove with hot temps, averaging around 28°C during the day and nights around 17°C.
Mid September
By mid-September, daytime temps stay steady at around 28°C, with nights around 15°C. There’s a high chance of precipitation during this time.
End of September
By the end of September, the average daytime temperature in Oak Grove is around 26°C, while nighttime temps are about 14°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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UV index
The UV index is a maximum of 5 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 Oak Grove for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Oak Grove, Illinois. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Oak Grove
Temperature in September in Oak Grove over the years
Precipitation charts
These charts show the average amount of precipitation in September in Oak Grove, 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 September in Oak Grove
Total precipitation in September in Oak Grove over the years
Daily UV index in September in Oak Grove
This chart shows the average daily UV index in September in Oak Grove, 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 September in Oak Grove
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Average weather in Oak Grove by month
Click on a month below to see detailed weather info for Oak Grove. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.