August weather forecast
Allendale, IL

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Weather in August

August, the last month of the summer in Allendale, is another warm month, with temperature in the range of an average high of 83.1°F (28.4°C) and an average low of 65.7°F (18.7°C).

Temperature

As July transitions into August, Allendale records an average high-temperature of a still warm 83.1°F (28.4°C), showing a gentle shift from the preceding month. Throughout August, an average low-temperature of 65.7°F (18.7°C) is experienced in Allendale.

Heat index

August's average heat index is evaluated at a hot 91.4°F (33°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.

Humidity

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

Rainfall

In Allendale, in August, during 12.8 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. Throughout the year, in Allendale, there are 155.6 rainfall days, and 34.65" (880mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Allendale.

Daylight

In Allendale, Illinois, the average length of the day in August is 13h and 37min.
On the first day of August in Allendale, sunrise is at 5:53 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 7:21 pm CDT.

Sunshine

The average sunshine in August is 10.4h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Allendale. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index, 6 during August, leads to the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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Frequently asked questions

How hot is August in Allendale?

In August, the average high-temperature and low-temperature in Allendale are 83.1°F (28.4°C) and 65.7°F (18.7°C) respectively. In August, the average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 91.4°F (33°C).

What is the average humidity in August in Allendale?

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

How many days does it rain in August in Allendale?

In Allendale, during August, the rain falls for 12.8 days and regularly aggregates up to 2.32" (59mm) of precipitation.

When it does not snow in Allendale?

May through October are months without snowfall in Allendale, Illinois.

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

In Allendale, Illinois, the average day length in August is 13h and 37min.

What time are sunrise and sunset in August in Allendale?

In August, on the first day of the month, sunrise is at 5:53 am and sunset at 8:00 pm. On the last day of the month, in Allendale, Illinois, sunrise is at 6:19 am and sunset at 7:21 pm CDT.

How long on average sun shines in August in Allendale?

In August, the average sunshine duration is 10.4h.

What is the month with the highest UV index in Allendale?

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

What is the UV index reading in August in Allendale?

In August, the average daily maximum UV index in Allendale is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe 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
Allendale, IL

Average temperature in August - Allendale, IL
  • Average high temperature in August: 83.1°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in August: 65.7°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

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Average pressure in August
Allendale, IL

Average pressure in August - Allendale, IL
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in August
Allendale, IL

Average wind speed in August - Allendale, IL
  • Average wind speed in August: 6mph

The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).

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Average humidity in August
Allendale, IL

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

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

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Average rainfall in August
Allendale, IL

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

The wettest month (with the highest rainfall) is April (4.72").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in August
Allendale, IL

Average rainfall days in August - Allendale, IL
  • Average rainfall days in August: 12.8 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (9.4 days).

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Average snowfall in August
Allendale, IL

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

The month with the highest snowfall is January (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Allendale, IL

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

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in August / Average sunshine in August - Allendale, 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 2min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

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Average sunshine days in August
Allendale, IL

Average sunshine days in August - Allendale, IL
  • Average sunshine days in August: 15.8 days

The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (10.3 days).

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Average UV index in August
Allendale, IL

Average UV index in August - Allendale, 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).

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Average cloud cover in August
Allendale, IL

Average cloud cover in August - Allendale, IL
  • Average cloud cover in August: 28

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and August (Cloud cover 28).

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Average visibility in August
Allendale, IL

Average visibility in August - Allendale, 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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Allendale, Illinois, USA

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