August weather forecast
Hartford, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Hartford, Illinois, with an average temperature ranging between min 65.7°F (18.7°C) and max 84°F (28.9°C).

Temperature

August's arrival brings an average high-temperature of a still moderately hot 84°F (28.9°C), slightly deviating from July's 85.3°F (29.6°C). Throughout the month of August, Hartford witnesses an average low-temperature of 65.7°F (18.7°C).

Heat index

In August, the average heat index is appraised at a tropical 93.2°F (34°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

In August, the average relative humidity is 79%.

Rainfall

In Hartford, in August, during 14.3 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. Throughout the year, there are 138 rainfall days, and 23.9" (607mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

In Hartford, the average length of the day in August is 13h and 38min.
On the first day of August, sunrise is at 6:02 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:31 pm CDT.

Sunshine

In Hartford, the average sunshine in August is 10h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 6 in August translates into this advice:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete 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.
Updated: Jun 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

The high-temperature during August is 84°F (28.9°C) and the low-temperature is 65.7°F (18.7°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 93.2°F (34°C).

What is the average humidity in August in Hartford?

In Hartford, the average relative humidity in August is 79%.

How many days does it rain in August?

In Hartford, during August, the rain falls for 14.3 days and regularly aggregates up to 2.91" (74mm) of precipitation.

When it does not snow?

In Hartford, snow does not fall in May through October.

How many hours of daylight does Hartford have in August?

The average day length in August in Hartford is 13h and 38min.

When is the sunrise / sunset in August in Hartford?

In August, on the first day of the month, sunrise is at 6:02 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:31 pm CDT.

How many hours of sunshine does Hartford have in August?

In August, the average sunshine duration is 10h.

When is the highest UV index?

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

How high is the UV index in August?

In August, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability 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
Hartford, IL

Average temperature in August - Hartford, IL
  • Average high temperature in August: 84°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in August: 65.7°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in August
Hartford, IL

Average pressure in August - Hartford, IL
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in August
Hartford, IL

Average wind speed in August - Hartford, IL
  • Average wind speed in August: 5.8mph

The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

Average humidity in August
Hartford, IL

Average humidity in August - Hartford, IL
  • Average humidity in August: 79%

The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
Hartford, IL

Average rainfall in August - Hartford, IL
  • Average rainfall in August: 2.91"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is February (1.14").

Average rainfall days in August
Hartford, IL

Average rainfall days in August - Hartford, IL
  • Average rainfall days in August: 14.3 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (5.6 days).

Average snowfall in August
Hartford, IL

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

The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Hartford, IL

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

The month with the highest number of snowfall days is January (6 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
Hartford, IL

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 10h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).

Average sunshine days in August
Hartford, IL

Average sunshine days in August - Hartford, IL
  • Average sunshine days in August: 14 days

The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is July (12.3 days).

Average UV index in August
Hartford, IL

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

The months with the highest UV index are May, 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
Hartford, IL

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

The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).

Average visibility in August
Hartford, IL

Average visibility in August - Hartford, 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).

Hartford, Illinois, USA

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