August weather forecast
Foster, MO

Share

Weather in August

The last month of the summer, August, is another warm month in Foster, Missouri, with temperature in the range of an average low of 66.7°F (19.3°C) and an average high of 85.6°F (29.8°C).

Temperature

August notes an average high-temperature of a moderately hot 85.6°F (29.8°C), subtly differing from July's 87.4°F (30.8°C). During August, Foster sees a mean low-temperature of 66.7°F (19.3°C).

Heat index

The heat index for August is calculated to be a very hot 96.8°F (36°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

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

Rainfall

In August, in Foster, the rain falls for 12.9 days. Throughout August, 2.4" (61mm) of precipitation is accumulated. Throughout the year, there are 130.6 rainfall days, and 25.43" (646mm) of precipitation is accumulated.

Snowfall

In Foster, snow does not fall in April, June through September.

Daylight

In August, the average length of the day in Foster, Missouri, is 13h and 36min.
On the first day of the month, sunrise is at 6:21 am and sunset at 8:27 pm. On the last day of August, in Foster, sunrise is at 6:47 am and sunset at 7:48 pm CDT.

Sunshine

In Foster, the average sunshine in August is 10.3h.

UV index

In August, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: In August, the average maximum UV index of 6 translates into the following recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
[Resources]

Frequently asked questions

How hot is August in Foster?

The average high-temperature and low-temperature in Foster, Missouri, during August are 85.6°F (29.8°C) and 66.7°F (19.3°C) respectively. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in August is calculated to be 96.8°F (36°C).

What is the average humidity in August in Foster?

In Foster, the average relative humidity in August is 76%.

How much does it rain in Foster in August?

In Foster, during August, the rain falls for 12.9 days and regularly aggregates up to 2.4" (61mm) of precipitation.

When it does not snow in Foster?

April, June through September are months without snowfall in Foster.

How many hours of daylight does Foster have in August?

The average day length in August in Foster, Missouri, is 13h and 36min.

When are sunrise and sunset in August in Foster?

In August, on the first day of the month, sunrise is at 6:21 am and sunset at 8:27 pm. On the last day of the month, in Foster, sunrise is at 6:47 am and sunset at 7:48 pm CDT.

How long on average sun shines in August in Foster?

In Foster, the average sunshine duration in August is 10.3h.

What is the UV index intensity in August in Foster?

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health threat from 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
Foster, MO

Average temperature in August - Foster, MO
  • Average high temperature in August: 85.6°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in August: 66.7°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

[Resources]

Average pressure in August
Foster, MO

Average pressure in August - Foster, MO
  • Average pressure in August: 29.96"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

[Resources]

Average wind speed in August
Foster, MO

Average wind speed in August - Foster, MO
  • Average wind speed in August: 6.6mph

The windiest month (with the highest average wind speed) is March (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

[Resources]

Average humidity in August
Foster, MO

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

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

[Resources]

Average rainfall in August
Foster, MO

Average rainfall in August - Foster, MO
  • Average rainfall in August: 2.4"

The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is January (0.79").

[Resources]

Average rainfall days in August
Foster, MO

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

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (5 days).

[Resources]

Average snowfall in August
Foster, MO

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

The month with the highest snowfall is February (1.69").
The months with the least snowfall are April, June, July, August and September (0").

[Resources]

Average snowfall days in August
Foster, MO

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

The month with the highest number of snowfall days is February (4 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

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

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).

[Resources]

Average sunshine days in August
Foster, MO

Average sunshine days in August - Foster, MO
  • Average sunshine days in August: 15.4 days

The month with the most sunshine days is January (22.7 days).
The month with the least sunshine days is May (12.2 days).

[Resources]

Average UV index in August
Foster, MO

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

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

[Resources]

Average cloud cover in August
Foster, MO

Average cloud cover in August - Foster, MO
  • Average cloud cover in August: 26

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 25).

[Resources]

Average visibility in August
Foster, MO

Average visibility in August - Foster, 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).

[Resources]

Foster, Missouri, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location