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
Griggsville's August reports an average high-temperature of a still moderately hot 83.5°F (28.6°C), exhibiting a minor difference from July. In Griggsville, the nighttime temperature averages to a refreshing 65.5°F (18.6°C) during August.Heat index
For most parts of August, the heat index is evaluated at a hot 91.4°F (33°C). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.Factoring in the heat index, values are geared towards shaded areas with light breezes. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Humidity
In Griggsville, the average relative humidity in August is 78%.Rainfall
In Griggsville, in August, it is raining for 12.4 days, with typically 1.85" (47mm) of accumulated precipitation. In Griggsville, during the entire year, the rain falls for 128.8 days and collects up to 18.35" (466mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Griggsville, the average length of the day in August is 13h and 41min.On the first day of August, sunrise is at 6:02 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:35 pm CDT.
Sunshine
In Griggsville, the average sunshine in August is 10h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: During August, 6 as the daily maximum UV index converts into the following advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
Is it hot in Griggsville during August?
What is the average humidity in August in Griggsville?
How much does it rain in Griggsville in August?
When it does not snow in Griggsville?
How many hours of daylight does Griggsville have in August?
When are sunrise and sunset in August in Griggsville?
How long on average sun shines in August in Griggsville?
What are the months with the highest UV index in Griggsville?
How high is the UV index in August in Griggsville?
Average temperature in August
Griggsville, IL
- Average high temperature in August: 83.5°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in August: 65.5°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in August
Griggsville, IL
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Griggsville, IL
- Average wind speed in August: 6.2mph
The windiest months (with the highest average wind speed) are January, February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity in August
Griggsville, IL
- Average humidity in August: 78%
The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
Griggsville, IL
- Average rainfall in August: 1.85"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days in August
Griggsville, IL
- Average rainfall days in August: 12.4 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in August
Griggsville, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Griggsville, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (6.3 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
Griggsville, IL
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in August: 10h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in August
Griggsville, IL
- Average sunshine days in August: 16.4 days
The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in August
Griggsville, 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
Griggsville, IL
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).
Average visibility in August
Griggsville, 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).
Griggsville, Illinois, USA
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