August weather forecast and climate
Olney, MO

August, the last month of the summer, in Olney, is also a moderately hot month, with average temperature fluctuating between 85.3°F (29.6°C) and 65.7°F (18.7°C).

Temperature

In Olney, the average high-temperature in August is practically the same as in July - a moderately hot 85.3°F (29.6°C). The average low-temperature, in Olney, Missouri, is 65.7°F (18.7°C).

Heat index

The average heat index in August is calculated to a sweltering 95.9°F (35.5°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. With the exposure to direct sunlight, the heat index may be increased 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 a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, clothing, wind, 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 particularly important for children. 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.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity is 76%.

Rainfall

In Olney, in August, during 13.5 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. Throughout the year, there are 139.8 rainfall days, and 28.7" (729mm) of precipitation is accumulated.

Snowfall

In Olney snow does not fall in May through October.

Daylight

The average length of the day in August is 13.6h.

Sunshine

In August, the average sunshine in Olney is 9.9h.

UV index

Months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in August in Olney?

In August, in Olney, the average high-temperature is 85.3°F (29.6°C), and the average low-temperature is 65.7°F (18.7°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that combines air temperature and relative humidity, is appraised at 95.9°F (35.5°C).

What is the average humidity in August in Olney?

The average relative humidity in August in Olney is 76%.

How many days does it rain in August in Olney?

In Olney, Missouri, during August, the rain falls for 13.5 days and regularly aggregates up to 2.76" (70mm) of precipitation.

When it does not snow in Olney?

May through October are months without snowfall in Olney.

How many hours of daylight does Olney have in August?

The average length of the day in August in Olney, Missouri, is 13.6h.

How many hours of sunshine does Olney have in August?

The average sunshine in August in Olney is 9.9h.

When is the highest UV index in Olney?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

How high is the UV index in August in Olney?

The average daily maximum UV index in August in Olney is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays.
Average temperature in August - Olney, MO
  • Average high temperature in August: 29.6°C

The warmest month (with the highest average high temperature) is July (30.4°C).
The month with the lowest average high temperature is January (2.3°C).

  • Average low temperature in August: 18.7°C

The month with the highest average low temperature is July (19.8°C).
The coldest month (with the lowest average low temperature) is January (-5.3°C).

Average pressure in August - Olney, MO
  • Average pressure in August: 1014.9mbar

The month with the highest atmospheric pressure is January (1021.2mbar).
The month with the lowest atmospheric pressure is June (1013mbar).

Average wind speed in August - Olney, MO
  • Average wind speed in August: 9.8km/h

The windiest month (with the highest average wind speed) is January (15km/h).
The calmest month (with the lowest average wind speed) is July (9.6km/h).

Average humidity in August - Olney, MO
  • Average humidity in August: 76%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).

Average rainfall in August - Olney, MO
  • Average rainfall in August: 70mm

The wettest month (with the highest rainfall) is May (86mm).
The driest months (with the least rainfall) are January and February (37mm).

Average rainfall days in August - Olney, MO
  • Average rainfall days in August: 13.5 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is December (6.5 days).

Average snowfall in August - Olney, MO
  • Average snowfall in August: 0mm

The month with the highest snowfall is January (79mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in August - Olney, MO
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (5.9 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in August / Average sunshine in August - Olney, MO
  • Average daylight in August: 13.6h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in August: 9.9h

The month with the most sunshine is June (Average sunshine: 10.2h).
The month with the least sunshine is January (Average sunshine: 4.4h).

Average sunshine days in August - Olney, MO
  • Average sunshine days in August: 16 days

The month with the most sunshine days is December (20 days).
The month with the least sunshine days is May (12.2 days).

Average UV index in August - Olney, MO
  • Average UV index in August: 6

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August - Olney, MO
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in August - Olney, MO
  • Average visibility in August: 9km

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