August weather forecast
Jefferson City, MO

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The State Capitol building surrounded by a beautiful park in Jefferson City, Missouri
The State Capitol building surrounded by a beautiful park in Jefferson City, Missouri

Weather in August

August softly heralds the retreat of the peak summer conditions. The city breathes a sigh of relief as temperatures begin to descend, yet maintaining a pleasant summery vibe. Fewer daylight hours indicate a tangible transition towards autumn. The humidity levels drop a notch, contributing to the sense of gradual cooling. August retains the spirit of summer but with an undercurrent of the imminent autumn vibes.

Temperature

The arrival of August records an average high-temperature of a still tropical 87.4°F (30.8°C), closely related to the 89.2°F (31.8°C) observed in July. The temperature notes a substantial fall from the daily peak to an average of 65.8°F (18.8°C) during August nights.

Heat index

For most parts of August, the heat index is evaluated at a very hot 100.4°F (38°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', comes about by integrating the temperature readings with the humidity levels. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The average relative humidity in August is 73%.

Rainfall

In Jefferson City, during August, the rain falls for 8.6 days and regularly aggregates up to 0.87" (22mm) of precipitation. In Jefferson City, during the entire year, the rain falls for 93.7 days and collects up to 9.29" (236mm) of precipitation.

Snowfall

In Jefferson City, snow does not fall in April through October.

Daylight

The average length of the day in August in Jefferson City is 13h and 37min.
On the first day of August in Jefferson City, sunrise is at 6:11 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 7:39 pm CDT.

Sunshine

In Jefferson City, Missouri, the average sunshine in August is 10.3h.

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 hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 6 during August translates into the following directions:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Jefferson City in August?

The high-temperature during August is 87.4°F (30.8°C) and the low-temperature is 65.8°F (18.8°C). The average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, in August is evaluated at 100.4°F (38°C).

What is the average humidity in August in Jefferson City?

In Jefferson City, Missouri, the average relative humidity in August is 73%.

How many days does it rain in August in Jefferson City?

In August, in Jefferson City, the rain falls for 8.6 days. Throughout August, 0.87" (22mm) of precipitation is accumulated.

When it does not snow in Jefferson City?

April through October are months without snowfall in Jefferson City, Missouri.

What is the average length of the day in August in Jefferson City?

In August, the average day length in Jefferson City is 13h and 37min.

When are sunrise and sunset in August in Jefferson City?

In August, on the first day of the month, sunrise is at 6:11 am and sunset at 8:18 pm. On the last day of the month, in Jefferson City, sunrise is at 6:37 am and sunset at 7:39 pm CDT.

How many hours of sunshine does Jefferson City have in August?

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

What is the month with the highest UV index in Jefferson City?

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

What is the UV index reading in August in Jefferson City?

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high hazard to health 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
Jefferson City, MO

Average temperature in August - Jefferson City, MO
  • Average high temperature in August: 87.4°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (38.5°F).

  • Average low temperature in August: 65.8°F

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in August
Jefferson City, MO

Average pressure in August - Jefferson City, 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 (29.92"Hg).

Average wind speed in August
Jefferson City, MO

Average wind speed in August - Jefferson City, MO
  • Average wind speed in August: 5.8mph

The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in August
Jefferson City, MO

Average humidity in August - Jefferson City, MO
  • Average humidity in August: 73%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is October (72%).

Average rainfall in August
Jefferson City, MO

Average rainfall in August - Jefferson City, MO
  • Average rainfall in August: 0.87"

The wettest month (with the highest rainfall) is May (1.3").
The driest month (with the least rainfall) is November (0.47").

Average rainfall days in August
Jefferson City, MO

Average rainfall days in August - Jefferson City, MO
  • Average rainfall days in August: 8.6 days

The month with the highest number of rainy days is May (11.3 days).
The month with the least rainy days is January (4 days).

Average snowfall in August
Jefferson City, MO

Average snowfall in August - Jefferson City, MO
  • Average snowfall in August: 0"

The month with the highest snowfall is January (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August
Jefferson City, MO

Average snowfall days in August - Jefferson City, MO
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (5.2 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
Jefferson City, MO

Average daylight in August / Average sunshine in August - Jefferson City, 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 30min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in August
Jefferson City, MO

Average sunshine days in August - Jefferson City, MO
  • Average sunshine days in August: 19.8 days

The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is May (16.7 days).

Average UV index in August
Jefferson City, MO

Average UV index in August - Jefferson City, 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
Jefferson City, MO

Average cloud cover in August - Jefferson City, MO
  • Average cloud cover in August: 28

The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June and August (Cloud cover 28).

Average visibility in August
Jefferson City, MO

Average visibility in August - Jefferson City, 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).

Jefferson City, Missouri, USA

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