Springfield
Illinois, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Springfield, IL

The Abraham Lincoln House in Springfield, Illinois, on a partially sunny autumn day
The Abraham Lincoln House in Springfield, Illinois, on a partially sunny autumn day
The first month of the autumn, Septiembre, is still a warm month in Springfield, Illinois, with average temperature fluctuating between 54.7°F (12.6°C) and 79°F (26.1°C).

Temperature

In Septiembre, the average high-temperature marginally drops, from a moderately hot 84.9°F (29.4°C) in Agosto, to a still warm 79°F (26.1°C). In Septiembre, in Springfield, the average low-temperature is 54.7°F (12.6°C).

Humidity

In Springfield, the average relative humidity in Septiembre is 71.9%.

Rainfall

In Springfield, during Septiembre, the rain falls for 7.4 days and regularly aggregates up to 2.9" (73.7mm) of precipitation. Throughout the year, there are 113.4 rainfall days, and 37.43" (950.8mm) of precipitation is accumulated.

Snowfall

In Springfield snow does not fall in Mayo through Octubre.

Daylight

The average length of the day is 12.4h.

Sunshine

In Springfield, Illinois, the average sunshine is 8.3h.

UV index

In Springfield, the average daily maximum UV index in Septiembre is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to the UV radiation for the ordinary person.
Note: The average daily UV index of 6 in Septiembre transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in Septiembre in Springfield?

In Springfield, in Septiembre, the average high-temperature is 79°F (26.1°C), and the average low-temperature is 54.7°F (12.6°C).

What is the average humidity in Septiembre in Springfield?

In Septiembre, the average relative humidity in Springfield is 71.9%.

How much does it rain in Springfield in Septiembre?

In Springfield, Illinois, in Septiembre, during 7.4 rainfall days, 2.9" (73.7mm) of precipitation is typically accumulated.

When it does not snow in Springfield?

Mayo through Octubre are months without snowfall in Springfield.

What is the average length of the day in Septiembre in Springfield?

In Springfield, the average length of the day in Septiembre is 12.4h.

How many hours of sunshine does Springfield have in Septiembre?

The average sunshine in Septiembre in Springfield is 8.3h.

What is the UV index reading in Septiembre in Springfield?

The average daily maximum UV index in Septiembre in Springfield is 6. A UV Index of 6 to 7 symbolizes a high health threat from unprotected exposure to the UV radiation.
Average temperature in September - Springfield, IL
  • Average high temperature in September: 78.9°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (34.8°F).

  • Average low temperature in September: 54.6°F

The month with the highest average low temperature is July (65.4°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).

Average humidity in September - Springfield, IL
  • Average humidity in September: 71.9%

The month with the highest relative humidity is December (77.6%).
The month with the lowest relative humidity is April (65.3%).

Average rainfall in September - Springfield, IL
  • Average rainfall in September: 2.9"

The wettest month (with the highest rainfall) is June (4.5").
Driest months (with the lowest rainfall) are January and February (1.8").

Average rainfall days in September - Springfield, IL
  • Average rainfall days in September: 7.4 days

The month with the highest number of rainy days is May (11.7 days).
The month with the lowest number of rainy days is September (7.4 days).

Average snowfall in September - Springfield, IL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (6.4").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average snowfall days in September - Springfield, IL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (5.4 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Springfield, IL
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.4h).

  • Average sunshine in September: 8.3h

Months with most sunshine are June and July (Average sunshine: 10.3h).
The month with least sunshine is December (Average sunshine: 4.2h).

Average UV index in September - Springfield, IL
  • Average UV index in September: 6

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January, November and December (UV index 2).