August weather forecast
Plymouth, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Plymouth, Illinois, with temperature in the range of an average high of 82°F (27.8°C) and an average low of 63.7°F (17.6°C).

Temperature

August is marked by an average high-temperature of a still warm 82°F (27.8°C), almost identical to the preceding month. In August, the recorded average low-temperature in Plymouth is a refreshing 63.7°F (17.6°C).

Heat index

The heat index value for August is computed to be a hot 87.8°F (31°C). Continuing activity during long-lasting exposure might induce tiredness and result in heat cramps.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.

Humidity

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

Rainfall

In Plymouth, Illinois, during August, the rain falls for 8.9 days and regularly aggregates up to 0.59" (15mm) of precipitation. In Plymouth, during the entire year, the rain falls for 94.4 days and collects up to 7.76" (197mm) of precipitation.

Snowfall

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

Daylight

In Plymouth, the average length of the day in August is 13h and 43min.
On the first day of the month, sunrise is at 6:02 am and sunset at 8:17 pm. On the last day of August, sunrise is at 6:30 am and sunset at 7:36 pm CDT.

Sunshine

In Plymouth, the average sunshine in August is 10.1h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Plymouth. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The UV index of 6 during August leads to these advisories:
Prevent overexposure. Protection from the sun's harmful effects is needed. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
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Frequently asked questions

What is the average August temperature in Plymouth?

In August, the average high-temperature and low-temperature are 82°F (27.8°C) and 63.7°F (17.6°C) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 87.8°F (31°C).

What is the average humidity in August in Plymouth?

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

How much does it rain in Plymouth in August?

In August, in Plymouth, Illinois, the rain falls for 8.9 days. Throughout August, 0.59" (15mm) of precipitation is accumulated.

When it does not snow in Plymouth?

In Plymouth, Illinois, snow does not fall in May through September.

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

In Plymouth, Illinois, the average day length in August is 13h and 43min.

What time are sunrise and sunset in August in Plymouth?

In August, on the first day of the month, sunrise is at 6:02 am and sunset at 8:17 pm. On the last day of the month, in Plymouth, sunrise is at 6:30 am and sunset at 7:36 pm CDT.

How many hours of sunshine does Plymouth have in August?

The average sunshine duration in August in Plymouth is 10.1h.

When is the highest UV index in Plymouth?

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

How high is the UV index in August in Plymouth?

In Plymouth, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.
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
Plymouth, IL

Average temperature in August - Plymouth, IL
  • Average high temperature in August: 82°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (31.1°F).

  • Average low temperature in August: 63.7°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (19°F).

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Average pressure in August
Plymouth, IL

Average pressure in August - Plymouth, 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).

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Average wind speed in August
Plymouth, IL

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

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in August
Plymouth, IL

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

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Plymouth, IL

Average rainfall in August - Plymouth, IL
  • Average rainfall in August: 0.59"

The wettest month (with the highest rainfall) is May (1.1").
The driest month (with the least rainfall) is December (0.35").

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Average rainfall days in August
Plymouth, IL

Average rainfall days in August - Plymouth, IL
  • Average rainfall days in August: 8.9 days

The month with the highest number of rainy days is May (12.3 days).
The month with the least rainy days is January (3.3 days).

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Average snowfall in August
Plymouth, IL

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

The month with the highest snowfall is January (0.67").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Plymouth, IL

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

The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Plymouth, 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 months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in August
Plymouth, IL

Average sunshine days in August - Plymouth, IL
  • Average sunshine days in August: 18.2 days

The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is June (13.9 days).

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Average UV index in August
Plymouth, IL

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

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in August
Plymouth, IL

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

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in August
Plymouth, IL

Average visibility in August - Plymouth, 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).

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Plymouth, Illinois, USA

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