August weather forecast
Stillwater, OK

Weather in August

August, the last month of the summer, in Stillwater, is another tropical month, with temperature in the range of an average high of 92.3°F (33.5°C) and an average low of 70.9°F (21.6°C).

Temperature

In August, the average high-temperature is almost the same as in July - a still tropical 92.3°F (33.5°C). In Stillwater, the average low-temperature is 70.9°F (21.6°C).

Heat index

In August, the average heat index is calculated to be a scorching 106.9°F (41.6°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like activity, differences in body mass, height, and shape, clothing, and metabolic differences affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

August is the least humid month, with an average relative humidity of 62%.

Rainfall

In August, in Stillwater, the rain falls for 12.4 days. Throughout August, 2.48" (63mm) of precipitation is accumulated. Throughout the year, in Stillwater, there are 121.4 rainfall days, and 25.28" (642mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In August, the average length of the day in Stillwater is 13.5h.

Sunshine

August has the most sunshine of the year in Stillwater, Oklahoma, with an average of 11.2h of sunshine.

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index in Stillwater. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: In August, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in August in Stillwater?

The average high-temperature, in August, in Stillwater, is 92.3°F (33.5°C), while the average low-temperature is 70.9°F (21.6°C). The average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, in August is calculated to be 106.9°F (41.6°C).

What is the least humid month in Stillwater?

The least humid month is August, with an average relative humidity of 62%.

What is the average humidity in August in Stillwater?

In August, the average relative humidity in Stillwater is 62%.

How many days does it rain in August in Stillwater?

In August, in Stillwater, Oklahoma, the rain falls for 12.4 days. Throughout August, 2.48" (63mm) of precipitation is accumulated.

When it does not snow in Stillwater?

In Stillwater snow does not fall in April through October.

How many hours of daylight does Stillwater have in August?

In August, the average length of the day in Stillwater is 13.5h.

What month has the most sunshine in Stillwater?

With an average of 11.2h of sunshine, August has the most sunshine of the year in Stillwater.

How many hours of sunshine does Stillwater have in August?

In August, the average sunshine in Stillwater, Oklahoma, is 11.2h.

What are the months with the highest UV index in Stillwater?

Months with the highest UV index are June through August, with an average maximum UV index of 7.

What is the UV index reading in August in Stillwater?

The average daily maximum UV index in August is 7. A UV Index of 6 to 7 symbolizes a high health threat from unprotected exposure to the UV radiation.

Average temperature in August
Stillwater, OK

Average temperature in August - Stillwater, OK
  • Average high temperature in August: 33.5°C

The warmest month (with the highest average high temperature) is July (33.9°C).
The month with the lowest average high temperature is January (8.6°C).

  • Average low temperature in August: 21.6°C

The month with the highest average low temperature is July (22.8°C).
The coldest month (with the lowest average low temperature) is January (-0.8°C).

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Average pressure in August
Stillwater, OK

Average pressure in August - Stillwater, OK
  • Average pressure in August: 1013.4mbar

The month with the highest atmospheric pressure is January (1021.4mbar).
The month with the lowest atmospheric pressure is June (1011.6mbar).

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Average wind speed in August
Stillwater, OK

Average wind speed in August - Stillwater, OK
  • Average wind speed in August: 13.2km/h

The windiest month (with the highest average wind speed) is April (18.5km/h).
The calmest month (with the lowest average wind speed) is August (13.2km/h).

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Average humidity in August
Stillwater, OK

Average humidity in August - Stillwater, OK
  • Average humidity in August: 62%

The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (62%).

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Average rainfall in August
Stillwater, OK

Average rainfall in August - Stillwater, OK
  • Average rainfall in August: 63mm

The wettest month (with the highest rainfall) is May (108mm).
The driest month (with the least rainfall) is December (25mm).

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Average rainfall days in August
Stillwater, OK

Average rainfall days in August - Stillwater, OK
  • Average rainfall days in August: 12.4 days

The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is January (4.8 days).

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Average snowfall in August
Stillwater, OK

Average snowfall in August - Stillwater, OK
  • Average snowfall in August: 0mm

The month with the highest snowfall is February (36mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

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Average snowfall days in August
Stillwater, OK

Average snowfall days in August - Stillwater, OK
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Stillwater, OK

Average daylight in August / Average sunshine in August - Stillwater, OK
  • Average daylight in August: 13.5h

The month with the longest days is June (Average daylight: 14.6h).
The month with the shortest days is December (Average daylight: 9.7h).

  • Average sunshine in August: 11.2h

The month with the most sunshine is August (Average sunshine: 11.2h).
The month with the least sunshine is December (Average sunshine: 6.1h).

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Average sunshine days in August
Stillwater, OK

Average sunshine days in August - Stillwater, OK
  • Average sunshine days in August: 15.7 days

The month with the most sunshine days is January (22.9 days).
The month with the least sunshine days is May (13.7 days).

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Average UV index in August
Stillwater, OK

Average UV index in August - Stillwater, 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).

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Average cloud cover in August
Stillwater, OK

Average cloud cover in August - Stillwater, OK
  • Average cloud cover in August: 19

The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 19).

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Average visibility in August
Stillwater, OK

Average visibility in August - Stillwater, OK
  • Average visibility in August: 10km

The months with the highest visibility are January, March, June, July, August, October, November and December (10km).
The months with the lowest visibility are February, April, May and September (9km).

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