August weather forecast and climate
Monticello, MO

The last month of the summer, August, is another warm month in Monticello, Missouri, with temperature in the range of an average low of 64.9°F (18.3°C) and an average high of 83.7°F (28.7°C).

Temperature

In Monticello, the average high-temperature in August is relatively the same as in July - a still warm 83.7°F (28.7°C). The average low-temperature, in August, is 64.9°F (18.3°C).

Heat index

The average heat index in August is calculated to a hot 91.9°F (33.3°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'apparent temperature', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, differences in body mass, height, and shape, metabolic differences). 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.

Humidity

In Monticello, the average relative humidity in August is 77%.

Rainfall

In August, in Monticello, the rain falls for 12.9 days. Throughout August, 2.32" (59mm) of precipitation is accumulated. Throughout the year, there are 137.5 rainfall days, and 27.68" (703mm) of precipitation is accumulated.

Snowfall

In Monticello snow does not fall in May through September.

Daylight

In August, the average length of the day is 13.7h.

Sunshine

The average sunshine in August is 10.1h.

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 vulnerability from unsafe exposure to the UV radiation for the ordinary person.
Note: In August, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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.

What is the temperature in August in Monticello?

The average high-temperature, in August, is 83.7°F (28.7°C), while the average low-temperature is 64.9°F (18.3°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), that combines relative humidity and air temperature, is appraised at 91.9°F (33.3°C).

What is the average humidity in August in Monticello?

The average relative humidity in August in Monticello is 77%.

How much does it rain in Monticello in August?

In Monticello, Missouri, in August, it is raining for 12.9 days, with typically 2.32" (59mm) of accumulated precipitation.

When it does not snow in Monticello?

May through September are months without snowfall in Monticello, Missouri.

What is the average length of the day in August in Monticello?

The average length of the day in August in Monticello, Missouri, is 13.7h.

How many hours of sunshine does Monticello have in August?

In August, the average sunshine is 10.1h.

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

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

How high is the UV index in August in Monticello?

In Monticello, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to the Sun's UV rays.
Average temperature in August - Monticello, MO
  • Average high temperature in August: 28.7°C

The warmest month (with the highest average high temperature) is July (29.2°C).
The month with the lowest average high temperature is January (0.3°C).

  • Average low temperature in August: 18.3°C

The month with the highest average low temperature is July (19.2°C).
The coldest month (with the lowest average low temperature) is January (-6.6°C).

Average pressure in August - Monticello, MO
  • Average pressure in August: 1014.8mbar

The month with the highest atmospheric pressure is January (1021.1mbar).
The month with the lowest atmospheric pressure is June (1012.6mbar).

Average wind speed in August - Monticello, MO
  • Average wind speed in August: 10.6km/h

The windiest months (with the highest average wind speed) are January and February (16.4km/h).
The calmest month (with the lowest average wind speed) is July (10.5km/h).

Average humidity in August - Monticello, MO
  • Average humidity in August: 77%

Months with the highest relative humidity are May, June and July (80%).
The month with the lowest relative humidity is October (70%).

Average rainfall in August - Monticello, MO
  • Average rainfall in August: 59mm

The wettest month (with the highest rainfall) is May (99mm).
The driest month (with the least rainfall) is January (32mm).

Average rainfall days in August - Monticello, MO
  • Average rainfall days in August: 12.9 days

Months with the highest number of rainy days are May and June (17.3 days).
The month with the least rainy days is January (5.3 days).

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

The month with the highest snowfall is January (107mm).
Months with the least snowfall are May, June, July, August and September (0mm).

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

The month with the highest number of snowfall days is January (9.3 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in August / Average sunshine in August - Monticello, MO
  • Average daylight in August: 13.7h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in August: 10.1h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is January (Average sunshine: 4.4h).

Average sunshine days in August - Monticello, MO
  • Average sunshine days in August: 15.2 days

The month with the most sunshine days is December (19.5 days).
The month with the least sunshine days is June (10.1 days).

Average UV index in August - Monticello, 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 - Monticello, MO
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in August - Monticello, 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).