August weather forecast
Fairfax, MO

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Weather in August

The last month of the summer, August, is another warm month in Fairfax, Missouri, with temperature in the range of an average high of 82.9°F (28.3°C) and an average low of 64.2°F (17.9°C).

Temperature

August's onset records a minor alteration in the average high-temperature to a still warm 82.9°F (28.3°C) from July's 84.9°F (29.4°C). Fairfax's August nights cool down to an average low-temperature of 64.2°F (17.9°C).

Heat index

During August, the heat index is computed to be a tropical 91.4°F (33°C). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

In Fairfax, the average relative humidity in August is 78%.

Rainfall

In Fairfax, Missouri, during August, the rain falls for 12.9 days and regularly aggregates up to 2.56" (65mm) of precipitation. Throughout the year, there are 120.8 rainfall days, and 24.09" (612mm) of precipitation is accumulated.

Snowfall

In Fairfax, snow does not fall in May through September.

Daylight

In Fairfax, Missouri, the average length of the day in August is 13h and 43min.
On the first day of August in Fairfax, sunrise is at 6:19 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 7:54 pm CDT.

Sunshine

In August, the average sunshine is 9.9h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 6 during August leads to these advisories:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
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Frequently asked questions

How hot is it in Fairfax in August?

An average high-temperature, in August, in Fairfax, is 82.9°F (28.3°C) and the average low-temperature is 64.2°F (17.9°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 91.4°F (33°C).

What is the average humidity in August in Fairfax?

In August, the average relative humidity in Fairfax, Missouri, is 78%.

How much does it rain in Fairfax in August?

In Fairfax, in August, it is raining for 12.9 days, with typically 2.56" (65mm) of accumulated precipitation.

When it does not snow in Fairfax?

May through September are months without snowfall in Fairfax.

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

In August, the average day length in Fairfax, Missouri, is 13h and 43min.

When are sunrise and sunset in August in Fairfax?

On the first day of August, sunrise is at 6:19 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 7:54 pm CDT.

How long on average sun shines in August in Fairfax?

In Fairfax, the average sunshine duration in August is 9.9h.

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

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 Fairfax?

The average daily maximum UV index in August in Fairfax is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Fairfax, MO

Average temperature in August - Fairfax, MO
  • Average high temperature in August: 82.9°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in August: 64.2°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).

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Average pressure in August
Fairfax, MO

Average pressure in August - Fairfax, MO
  • Average pressure in August: 29.95"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in August
Fairfax, MO

Average wind speed in August - Fairfax, MO
  • Average wind speed in August: 6.8mph

The windiest months (with the highest average wind speed) are March and April (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

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Average humidity in August
Fairfax, MO

Average humidity in August - Fairfax, MO
  • Average humidity in August: 78%

The month with the highest relative humidity is July (79%).
The month with the lowest relative humidity is October (67%).

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Average rainfall in August
Fairfax, MO

Average rainfall in August - Fairfax, MO
  • Average rainfall in August: 2.56"

The wettest month (with the highest rainfall) is June (4.21").
The driest month (with the least rainfall) is February (0.67").

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Average rainfall days in August
Fairfax, MO

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

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (3.8 days).

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Average snowfall in August
Fairfax, MO

Average snowfall in August - Fairfax, MO
  • Average snowfall in August: 0"

The month with the highest snowfall is January (3.03").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Fairfax, MO

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

The months with the highest number of snowfall days are January and February (6.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Fairfax, MO

Average daylight in August / Average sunshine in August - Fairfax, MO
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).

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Average sunshine days in August
Fairfax, MO

Average sunshine days in August - Fairfax, MO
  • Average sunshine days in August: 14.7 days

The months with the most sunshine days are November and December (21.5 days).
The month with the least sunshine days is May (11.4 days).

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Average UV index in August
Fairfax, MO

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

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

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Average cloud cover in August
Fairfax, MO

Average cloud cover in August - Fairfax, MO
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in August
Fairfax, MO

Average visibility in August - Fairfax, MO
  • 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).

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Fairfax, Missouri, USA

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