August weather forecast
Arrowsmith, IL

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Weather in August

The last month of the summer, August, is another warm month in Arrowsmith, Illinois, with an average temperature fluctuating between 79.9°F (26.6°C) and 63.1°F (17.3°C).

Temperature

The arrival of August brings an average high-temperature of a still warm 79.9°F (26.6°C), nearly identical to July's 80.8°F (27.1°C). August nights in Arrowsmith, Illinois, experience a consistent temperature drop to a comfortable 63.1°F (17.3°C).

Humidity

The average relative humidity in August is 83%.

Rainfall

In Arrowsmith, in August, it is raining for 13.7 days, with typically 1.85" (47mm) of accumulated precipitation. Throughout the year, there are 139 rainfall days, and 20.83" (529mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

In Arrowsmith, the average length of the day in August is 13h and 44min.
On the first day of the month, sunrise is at 5:52 am and sunset at 8:09 pm. On the last day of August, in Arrowsmith, Illinois, sunrise is at 6:21 am and sunset at 7:27 pm CDT.

Sunshine

In August, the average sunshine in Arrowsmith, Illinois, is 9.8h.

UV index

In Arrowsmith, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: The UV index of 5 in August translates into these instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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Frequently asked questions

What are August temperatures in Arrowsmith?

The high-temperature, in August, in Arrowsmith, records 79.9°F (26.6°C), while the low-temperature is 63.1°F (17.3°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 86°F (30°C).

What is the average humidity in August in Arrowsmith?

The average relative humidity in August in Arrowsmith is 83%.

How many days does it rain in August in Arrowsmith?

In August, in Arrowsmith, the rain falls for 13.7 days. Throughout August, 1.85" (47mm) of precipitation is accumulated.

When it does not snow in Arrowsmith?

May through October are months without snowfall.

How many hours of daylight does Arrowsmith have in August?

In August, the average day length in Arrowsmith, Illinois, is 13h and 44min.

When are sunrise and sunset in August in Arrowsmith?

In August, on the first day of the month, sunrise is at 5:52 am and sunset at 8:09 pm. On the last day of the month, in Arrowsmith, Illinois, sunrise is at 6:21 am and sunset at 7:27 pm CDT.

How long on average sun shines in August in Arrowsmith?

In August, the average sunshine duration in Arrowsmith, Illinois, is 9.8h.

How high is the UV index in August in Arrowsmith?

The average daily maximum UV index in August in Arrowsmith is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to 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
Arrowsmith, IL

Average temperature in August - Arrowsmith, IL
  • Average high temperature in August: 79.9°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in August: 63.1°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).

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Average pressure in August
Arrowsmith, IL

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in August
Arrowsmith, IL

Average wind speed in August - Arrowsmith, IL
  • Average wind speed in August: 6.5mph

The windiest month (with the highest average wind speed) is January (11mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity in August
Arrowsmith, IL

Average humidity in August - Arrowsmith, IL
  • Average humidity in August: 83%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Arrowsmith, IL

Average rainfall in August - Arrowsmith, IL
  • Average rainfall in August: 1.85"

The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is December (1.1").

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Average rainfall days in August
Arrowsmith, IL

Average rainfall days in August - Arrowsmith, IL
  • Average rainfall days in August: 13.7 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (5.8 days).

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Average snowfall in August
Arrowsmith, IL

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

The month with the highest snowfall is January (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Arrowsmith, IL

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

The month with the highest number of snowfall days is January (9.8 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
Arrowsmith, IL

Average daylight in August / Average sunshine in August - Arrowsmith, 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 18min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in August
Arrowsmith, IL

Average sunshine days in August - Arrowsmith, IL
  • Average sunshine days in August: 13.9 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is June (10.3 days).

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Average UV index in August
Arrowsmith, IL

Average UV index in August - Arrowsmith, IL
  • Average UV index in August: 5

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

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Average cloud cover in August
Arrowsmith, IL

Average cloud cover in August - Arrowsmith, IL
  • Average cloud cover in August: 32

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 31).

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Average visibility in August
Arrowsmith, IL

Average visibility in August - Arrowsmith, IL
  • Average visibility in August: 5mi

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

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Arrowsmith, Illinois, USA

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