August weather forecast and climate
Martinsville, MO

The last month of the summer, August, is another warm month in Martinsville, Missouri, with average temperature fluctuating between 82.4°F (28°C) and 64°F (17.8°C).

Temperature

In Martinsville, the average high-temperature is essentially the same as in July - a still warm 82.4°F (28°C). The average low-temperature, in Martinsville, is 64°F (17.8°C).

Heat index

The average heat index is estimated at a hot 89.4°F (31.9°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
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', 'felt air temperature', 'apparent temperature', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like wind, pregnancy, differences in body mass, height, and shape, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, 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 August, the average relative humidity in Martinsville is 79%.

Rainfall

In August, in Martinsville, the rain falls for 13.5 days. Throughout August, 2.44" (62mm) of precipitation is accumulated. In Martinsville, during the entire year, the rain falls for 129.2 days and collects up to 25.35" (644mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

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

Sunshine

In August, the average sunshine is 10h.

UV index

Months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation for average individuals.
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in August in Martinsville?

In August, the average high-temperature is 82.4°F (28°C), and the average low-temperature is 64°F (17.8°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, is appraised at 89.4°F (31.9°C).

What is the average humidity in August in Martinsville?

In August, the average relative humidity is 79%.

How many days does it rain in August in Martinsville?

In Martinsville, in August, it is raining for 13.5 days, with typically 2.44" (62mm) of accumulated precipitation.

When it does not snow in Martinsville?

In Martinsville, Missouri, snow does not fall in June through September.

How many hours of daylight does Martinsville have in August?

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

How long on average sun shines in August in Martinsville?

In Martinsville, Missouri, the average sunshine in August is 10h.

When is the highest UV index in Martinsville?

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

What is the UV index reading in August in Martinsville?

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health threat from unsafe exposure to the Sun's UV rays.
Average temperature in August - Martinsville, MO
  • Average high temperature in August: 28°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: 17.8°C

The month with the highest average low temperature is July (19.3°C).
The coldest month (with the lowest average low temperature) is January (-7.4°C).

Average pressure in August - Martinsville, MO
  • Average pressure in August: 1014.6mbar

The month with the highest atmospheric pressure is January (1021.6mbar).
The month with the lowest atmospheric pressure is June (1012mbar).

Average wind speed in August - Martinsville, MO
  • Average wind speed in August: 10.3km/h

The windiest month (with the highest average wind speed) is March (16.1km/h).
The calmest month (with the lowest average wind speed) is August (10.3km/h).

Average humidity in August - Martinsville, MO
  • Average humidity in August: 79%

The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August - Martinsville, MO
  • Average rainfall in August: 62mm

The wettest month (with the highest rainfall) is June (98mm).
The driest months (with the least rainfall) are January and February (23mm).

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

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (4.1 days).

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

The month with the highest snowfall is January (92mm).
Months with the least snowfall are June, July, August and September (0mm).

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

The month with the highest number of snowfall days is January (8 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August / Average sunshine in August - Martinsville, 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: 9.3h).

  • Average sunshine in August: 10h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is January (Average sunshine: 4.6h).

Average sunshine days in August - Martinsville, MO
  • Average sunshine days in August: 15 days

The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is May (10.8 days).

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

Months with the most cloud cover are January and March (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in August - Martinsville, 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).