August weather forecast
Walsh, IL

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Weather in August

The last month of the summer, August, is another warm month in Walsh, Illinois, with an average temperature varying between 66°F (18.9°C) and 85.5°F (29.7°C).

Temperature

Walsh's August showcases an average high-temperature of a warm 85.5°F (29.7°C), hardly distinct from July's 87.3°F (30.7°C). Walsh observes an average low-temperature of 66°F (18.9°C) during August.

Heat index

The heat index value during August is estimated at a sweltering 96.8°F (36°C). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

In August, the average relative humidity is 77%.

Rainfall

In Walsh, Illinois, in August, it is raining for 12.3 days, with typically 1.97" (50mm) of accumulated precipitation. Throughout the year, in Walsh, there are 125.7 rainfall days, and 18.31" (465mm) of precipitation is accumulated.

Snowfall

In Walsh, snow does not fall in April through September.

Daylight

The average length of the day in August is 13h and 35min.
On the first day of August, sunrise is at 6:02 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:30 pm CDT.

Sunshine

In August, the average sunshine in Walsh, Illinois, is 10.3h.

UV index

The months with the highest UV index in Walsh are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: In August, the maximum UV index of 6 suggests these recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete 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 it in Walsh in August?

In Walsh, 85.5°F (29.7°C) is the average high-temperature and 66°F (18.9°C) is the average low-temperature during August. In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is estimated at 96.8°F (36°C).

What is the average humidity in August in Walsh?

In Walsh, the average relative humidity in August is 77%.

How much does it rain in Walsh in August?

In Walsh, Illinois, in August, during 12.3 rainfall days, 1.97" (50mm) of precipitation is typically accumulated.

When it does not snow in Walsh?

In Walsh, snow does not fall in April through September.

How many hours of daylight does Walsh have in August?

In Walsh, the average day length in August is 13h and 35min.

What time are sunrise and sunset in August in Walsh?

In August, on the first day of the month, sunrise is at 6:02 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:30 pm CDT.

How many hours of sunshine does Walsh have in August?

The average sunshine duration in August in Walsh is 10.3h.

When is the highest UV index in Walsh?

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

How high is the UV index in August in Walsh?

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

Average temperature in August - Walsh, IL
  • Average high temperature in August: 85.5°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in August: 66°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).

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Average pressure in August
Walsh, IL

Average pressure in August - Walsh, 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 (29.93"Hg).

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Average wind speed in August
Walsh, IL

Average wind speed in August - Walsh, IL
  • Average wind speed in August: 5.6mph

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).

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Average humidity in August
Walsh, IL

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

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Walsh, IL

Average rainfall in August - Walsh, IL
  • Average rainfall in August: 1.97"

The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is February (0.94").

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Average rainfall days in August
Walsh, IL

Average rainfall days in August - Walsh, IL
  • Average rainfall days in August: 12.3 days

The month with the highest number of rainy days is July (15 days).
The month with the least rainy days is January (6.1 days).

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Average snowfall in August
Walsh, IL

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

The month with the highest snowfall is February (1.38").
The months with the least snowfall are April, May, June, July, August and September (0").

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Average snowfall days in August
Walsh, IL

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

The month with the highest number of snowfall days is January (4.8 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
Walsh, IL

Average daylight in August / Average sunshine in August - Walsh, 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 36min).

  • 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 42min).

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Average sunshine days in August
Walsh, IL

Average sunshine days in August - Walsh, IL
  • Average sunshine days in August: 15.6 days

The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is July (13 days).

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Average UV index in August
Walsh, IL

Average UV index in August - Walsh, 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).

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Average cloud cover in August
Walsh, IL

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

The months with the most cloud cover are January and February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 27).

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Average visibility in August
Walsh, IL

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

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