Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
Forest City's shift into August is marked by a subtle change to a still moderately hot 81.7°F (27.6°C) from July's 82.4°F (28°C) in temperature. August witnesses an average nighttime temperature of 63.7°F (17.6°C) in Forest City, Illinois.Heat index
Throughout August, the heat index is appraised at a tropical 87.8°F (31°C). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.Given the heat index, its values are aligned with shaded sites and gentle winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Humidity
In Forest City, the average relative humidity in August is 81%.Rainfall
In August, the rain falls for 15.5 days. Throughout August, 2.6" (66mm) of precipitation is accumulated. Throughout the year, in Forest City, there are 162.3 rainfall days, and 32.72" (831mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Forest City.Daylight
In Forest City, the average length of the day in August is 13h and 43min.On the first day of August, sunrise is at 5:57 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:32 pm CDT.
Sunshine
The average sunshine in August is 10h.UV index
The months with the highest UV index in Forest City are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 6 in August translates into these instructions:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Forest City in August?
What is the average humidity in August in Forest City?
How many days does it rain in August in Forest City?
When it does not snow in Forest City?
What is the average length of the day in August in Forest City?
What time are sunrise and sunset in August in Forest City?
How many hours of sunshine does Forest City have in August?
When is the highest UV index in Forest City?
How high is the UV index in August in Forest City?
Average temperature in August
Forest City, IL
- Average high temperature in August: 81.7°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in August: 63.7°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in August
Forest City, IL
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Forest City, IL
- Average wind speed in August: 6.3mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in August
Forest City, IL
- Average humidity in August: 81%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in August
Forest City, IL
- Average rainfall in August: 2.6"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is January (1.73").
Average rainfall days in August
Forest City, IL
- Average rainfall days in August: 15.5 days
The month with the highest number of rainy days is May (20.3 days).
The month with the least rainy days is February (6.5 days).
Average snowfall in August
Forest City, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.25").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Forest City, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11.3 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
Forest City, 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: 10h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in August
Forest City, IL
- Average sunshine days in August: 11.8 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is July (8.5 days).
Average UV index in August
Forest City, 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
Forest City, IL
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility in August
Forest City, 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).
Forest City, Illinois, USA
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