August weather forecastWalsh, IL
August
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in August /
Average sunshine in August
Walsh, IL
- Average daylight in August: 13h and 36min
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 18min
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).
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).
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).
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).
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).
