August weather forecast
Columbia, MO

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The iconic and famed historical columns in Columbia, Missouri
The iconic and famed historical columns in Columbia, Missouri

Weather in August

The last full month of summer, August, maintains the steady heat of July, providing ample opportunity for outdoor fun. On an average, the temperature fluctuates between a comfortable 65.8°F (18.8°C) to a warm 86°F (30°C), setting the stage for a myriad of activities. August's inviting climate encourages water sports and outings to the city's myriad parks and picnic spots. Despite the inevitable retreat of summer, Columbia retains its sunny energy through this month, carrying forward the lively vibes into the fall. A variety of food and music festivals color the city's cultural calendar, catering to different tastes and interests.

Temperature

The transition from July to August brings an average high-temperature of a still hot 86°F (30°C), barely different from July's 87.6°F (30.9°C). August's nights observe an average temperature of 65.8°F (18.8°C).

Heat index

Throughout August, the heat index is appraised at a fiery hot 96.8°F (36°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. 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 remain especially vital for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In Columbia, the average relative humidity in August is 75%.

Rainfall

In August, the rain falls for 8.2 days. Throughout August, 0.67" (17mm) of precipitation is accumulated. In Columbia, during the entire year, the rain falls for 95.5 days and collects up to 8.62" (219mm) of precipitation.

Snowfall

In Columbia, snow does not fall in April through September.

Daylight

In August, the average length of the day is 13h and 38min.
On the first day of August, sunrise is at 6:10 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:40 pm CDT.

Sunshine

In August, the average sunshine is 10.1h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 6 in August interprets into the following advice:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Updated: Jun 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August?

During August, Columbia experiences an average high-temperature of 86°F (30°C) and a low-temperature of 65.8°F (18.8°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, is appraised at 96.8°F (36°C).

What is the average humidity in August?

In August, the average relative humidity is 75%.

How much does it rain in Columbia in August?

In Columbia, in August, it is raining for 8.2 days, with typically 0.67" (17mm) of accumulated precipitation.

When it does not snow?

April through September are months without snowfall.

How many hours of daylight does Columbia have in August?

In August, the average day length is 13h and 38min.

When is the sunrise / sunset in August?

On the first day of August in Columbia, Missouri, sunrise is at 6:10 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:40 pm CDT.

How long on average sun shines in August?

In Columbia, the average sunshine duration in August is 10.1h.

What are the months with the highest UV index?

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

How high is the UV index in August?

In August, the average daily maximum UV index in Columbia is 6. A UV Index reading of 6 to 7 represents a high health risk 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
Columbia, MO

Average temperature in August - Columbia, MO
  • Average high temperature in August: 86°F

The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in August: 65.8°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (23°F).

Average pressure in August
Columbia, MO

Average pressure in August - Columbia, MO
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in August
Columbia, MO

Average wind speed in August - Columbia, MO
  • Average wind speed in August: 6.2mph

The windiest months (with the highest average wind speed) are January and March (9.4mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).

Average humidity in August
Columbia, MO

Average humidity in August - Columbia, MO
  • Average humidity in August: 75%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
Columbia, MO

Average rainfall in August - Columbia, MO
  • Average rainfall in August: 0.67"

The wettest month (with the highest rainfall) is May (1.3").
The driest months (with the least rainfall) are January and February (0.43").

Average rainfall days in August
Columbia, MO

Average rainfall days in August - Columbia, MO
  • Average rainfall days in August: 8.2 days

The months with the highest number of rainy days are April and May (11.3 days).
The month with the least rainy days is January (3.8 days).

Average snowfall in August
Columbia, MO

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

The month with the highest snowfall is January (0.67").
The months with the least snowfall are April, May, June, July, August and September (0").

Average snowfall days in August
Columbia, MO

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

The month with the highest number of snowfall days is February (5.3 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
Columbia, MO

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 10h and 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 42min).

Average sunshine days in August
Columbia, MO

Average sunshine days in August - Columbia, MO
  • Average sunshine days in August: 19.8 days

The month with the most sunshine days is December (23.7 days).
The month with the least sunshine days is May (15.6 days).

Average UV index in August
Columbia, MO

Average UV index in August - Columbia, 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
Columbia, MO

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

The months with the most cloud cover are January, February and March (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 29).

Average visibility in August
Columbia, MO

Average visibility in August - Columbia, 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).

Columbia, Missouri, USA

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