August weather forecast
Lima, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Lima, Illinois, with an average temperature fluctuating between 64.9°F (18.3°C) and 83.7°F (28.7°C).

Temperature

August notes an average high-temperature of a still warm 83.7°F (28.7°C), subtly differing from July's 84.6°F (29.2°C). Lima experiences an average low-temperature reading of 64.9°F (18.3°C) throughout August.

Heat index

August's heat index is evaluated at a hot 91.4°F (33°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.

Humidity

The average relative humidity in August is 77%.

Rainfall

In Lima, during August, the rain falls for 12.9 days and regularly aggregates up to 2.32" (59mm) of precipitation. Throughout the year, there are 137.5 rainfall days, and 27.68" (703mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In August, the average length of the day is 13h and 43min.
On the first day of the month, sunrise is at 6:04 am and sunset at 8:19 pm. On the last day of August, sunrise is at 6:32 am and sunset at 7:38 pm CDT.

Sunshine

In August, the average sunshine is 10.1h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index, 6 in August, converts into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.

Frequently asked questions

How hot is August?

During August, Lima experiences an average high-temperature of 83.7°F (28.7°C) and a low-temperature of 64.9°F (18.3°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is evaluated at 91.4°F (33°C).

What is the average humidity in August?

The average relative humidity in August is 77%.

How many days does it rain in August?

In August, in Lima, the rain falls for 12.9 days. Throughout August, 2.32" (59mm) of precipitation is accumulated.

When it does not snow in Lima?

In Lima, snow does not fall in May through September.

How many hours of daylight does Lima have in August?

The average day length in August is 13h and 43min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:04 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:38 pm CDT.

How many hours of sunshine does Lima have in August?

In Lima, the average sunshine duration in August is 10.1h.

What are the months with the highest UV index?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

What is the UV index intensity in August?

The average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Lima, IL

Average temperature in August - Lima, IL
  • Average high temperature in August: 83.7°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in August: 64.9°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

Average pressure in August
Lima, IL

Average pressure in August - Lima, IL
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in August
Lima, IL

Average wind speed in August - Lima, IL
  • Average wind speed in August: 6.6mph

The windiest months (with the highest average wind speed) are January and February (10.2mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

Average humidity in August
Lima, IL

Average humidity in August - Lima, IL
  • Average humidity in August: 77%

The months with the highest relative humidity are May, June and July (80%).
The month with the lowest relative humidity is October (70%).

Average rainfall in August
Lima, IL

Average rainfall in August - Lima, IL
  • Average rainfall in August: 2.32"

The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is January (1.26").

Average rainfall days in August
Lima, IL

Average rainfall days in August - Lima, IL
  • Average rainfall days in August: 12.9 days

The months with the highest number of rainy days are May and June (17.3 days).
The month with the least rainy days is January (5.3 days).

Average snowfall in August
Lima, IL

Average snowfall in August - Lima, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (4.21").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Lima, IL

Average snowfall days in August - Lima, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Lima, IL

Average daylight in August / Average sunshine in August - Lima, IL
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

Average sunshine days in August
Lima, IL

Average sunshine days in August - Lima, IL
  • Average sunshine days in August: 15.2 days

The month with the most sunshine days is December (19.5 days).
The month with the least sunshine days is June (10.1 days).

Average UV index in August
Lima, IL

Average UV index in August - Lima, IL
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August
Lima, IL

Average cloud cover in August - Lima, IL
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in August
Lima, IL

Average visibility in August - Lima, IL
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Lima, Illinois, USA

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