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
In Johnson, the month of August is known for its highest average temperatures, reaching a high of 92.3°F (33.5°C) and a low of 71.2°F (21.8°C).Heat index
For most parts of August, the heat index is estimated at a blistering 107.6°F (42°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.It is crucial to understand that heat index figures are for shade and gentle wind conditions. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', determines the feeling of heat when you account for the relative humidity. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.
Humidity
With an average relative humidity of 63%, August is the least humid month.Rainfall
In Johnson, in August, during 12.6 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. In Johnson, Oklahoma, during the entire year, the rain falls for 123.4 days and collects up to 25.87" (657mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in August is 13h and 27min.On the first day of August, sunrise is at 6:36 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 7:55 pm CDT.
Sunshine
With an average of 11.2h of sunshine, August has the most sunshine of the year.UV index
June through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.Note: A maximum UV index of 7 in August translates into the following recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the hottest?
How hot does it get in August?
What is the least humid month?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
How many hours of daylight does Johnson have in August?
When is the sunrise / sunset in August?
What month has the most sunshine?
How long on average sun shines in August?
When is the highest UV index?
What is the UV index reading in August?
Average temperature in August
Johnson, OK
- Average high temperature in August: 92.3°F
The warmest month (with the highest average high temperature) is August (92.3°F).
The month with the lowest average high temperature is January (48.6°F).
- Average low temperature in August: 71.2°F
The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).
Average pressure in August
Johnson, OK
- Average pressure in August: 29.92"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in August
Johnson, OK
- Average wind speed in August: 7.9mph
The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest months (with the lowest average wind speed) are July and August (7.9mph).
Average humidity in August
Johnson, OK
- Average humidity in August: 63%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (63%).
Average rainfall in August
Johnson, OK
- Average rainfall in August: 2.52"
The wettest month (with the highest rainfall) is May (4.06").
The driest months (with the least rainfall) are January and February (1.18").
Average rainfall days in August
Johnson, OK
- Average rainfall days in August: 12.6 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in August
Johnson, OK
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Johnson, OK
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (2.3 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
Johnson, OK
- Average daylight in August: 13h and 3min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in August: 11h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in August
Johnson, OK
- Average sunshine days in August: 15.9 days
The month with the most sunshine days is January (23.7 days).
The month with the least sunshine days is May (14.7 days).
Average UV index in August
Johnson, OK
- Average UV index in August: 7
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in August
Johnson, OK
- Average cloud cover in August: 19
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in August
Johnson, OK
- 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).
Johnson, Oklahoma, USA
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