August weather forecastFairfax, MO
August
Weather in August
The last month of the summer, August, is another warm month in Fairfax, Missouri, with an average temperature fluctuating between 82.9°F (28.3°C) and 64.2°F (17.9°C).Temperature
As Fairfax steps into August, the average high-temperature holds at a still moderately hot 82.9°F (28.3°C), hinting at a minor fluctuation from the prior month. Fairfax witnesses an average low-temperature of 64.2°F (17.9°C) throughout the month of August.Heat index
The heat index in August is computed to be a hot 91.4°F (33°C). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', gives a temperature feeling by integrating air temperature and humidity. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
The average relative humidity in August is 78%.Rainfall
In August, the rain falls for 12.9 days. Throughout August, 2.56" (65mm) of precipitation is accumulated. In Fairfax, during the entire year, the rain falls for 120.8 days and collects up to 24.09" (612mm) of precipitation.Snowfall
In Fairfax, Missouri, snow does not fall in May through September.Daylight
In Fairfax, the average length of the day in August is 13h and 43min.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.
Sunshine
The average sunshine in August in Fairfax 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 estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.Note: A typical high UV index of 6 in August suggests the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in August /
Average sunshine in August
Fairfax, MO
- Average daylight in August: 13h and 42min
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 54min
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).
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).
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).
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).
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).





