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

August 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 last month of the summer, August, is also a moderately hot month in Springfield, Illinois, with average temperature varying between 63.7°F (17.6°C) and 84.9°F (29.4°C).

Temperature

In August, the average high-temperature is relatively the same as in July - a moderately hot 84.9°F (29.4°C). In August, the average low-temperature is 63.7°F (17.6°C).

Heat index

In August, the average heat index is appraised at a tropical 94.1°F (34.5°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'felt air temperature', or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, wind, differences in body mass, height, and shape), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In Springfield, the average relative humidity in August is 74%.

Rainfall

In August, in Springfield, Illinois, the rain falls for 8.3 days. Throughout August, 3.2" (82.3mm) of precipitation is accumulated. In Springfield, during the entire year, the rain falls for 113.4 days and collects up to 37.4" (950.8mm) of precipitation.

Snowfall

In Springfield, during the entire year, snow aggregates up to 20.9" (530.8mm).

Daylight

In August, the average length of the day is 13.7h.

Sunshine

In August, the average sunshine in Springfield is 9.4h.

UV index

In August, the average daily maximum UV index is 8. A UV Index reading of 8 to 10 represents a very high health vulnerability from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 8 interpret into the following advice:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in August in Springfield?

In August, the average high-temperature is 84.9°F (29.4°C), and the average low-temperature is 63.7°F (17.6°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), that combines relative humidity and air temperature, is appraised at 94.1°F (34.5°C).

What is the average humidity in August in Springfield?

In August, the average relative humidity in Springfield is 74%.

How much does it rain in Springfield in August?

In Springfield, Illinois, in August, during 8.3 rainfall days, 3.2" (82.3mm) of precipitation is typically accumulated.

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

The average length of the day in August in Springfield, Illinois, is 13.7h.

How many hours of sunshine does Springfield have in August?

In August, the average sunshine in Springfield is 9.4h.

What is the UV index intensity in August in Springfield?

In Springfield, Illinois, the average daily maximum UV index in August is 8. A UV Index reading of 8 to 10 represents a very high health risk from unsafe exposure to the Sun's UV rays.
Average temperature in August - Springfield, IL
  • Average high temperature in August: 29.4°C

The warmest month (with the highest average high temperature) is July (30.1°C).
The month with the lowest average high temperature is January (1.6°C).

  • Average low temperature in August: 17.6°C

The month with the highest average low temperature is July (18.6°C).
The coldest month (with the lowest average low temperature) is January (-7.4°C).

Average humidity in August - Springfield, IL
  • Average humidity in August: 74%

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 August - Springfield, IL
  • Average rainfall in August: 82.3mm

The wettest month (with the highest rainfall) is June (113.3mm).
The driest month (with the lowest rainfall) is February (46mm).

Average rainfall days in August - Springfield, IL
  • Average rainfall days in August: 8.3 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 August - Springfield, IL
  • Average snowfall in August: 0mm

The month with the highest snowfall is January (162.6mm).
Months with the lowest snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in August - Springfield, IL
  • Average snowfall days in August: 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 August / Average sunshine in August - Springfield, IL
  • Average daylight in August: 13.7h

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 August: 9.4h

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 August - Springfield, IL
  • Average UV index in August: 8

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).