August weather forecast
Madison, MO

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Weather in August

August, the last month of the summer in Madison, is another warm month, with an average temperature fluctuating between 64.9°F (18.3°C) and 84.2°F (29°C).

Temperature

August notes an average high-temperature of a still warm 84.2°F (29°C), subtly differing from July's 84.9°F (29.4°C). Madison records an average nighttime low of 64.9°F (18.3°C) in August.

Heat index

The heat index value during August is estimated at a tropical 93.2°F (34°C). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', measures the perceived warmth when incorporating the humidity present in the air. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

In August, the average relative humidity is 77%.

Rainfall

In Madison, in August, during 11.3 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. In Madison, during the entire year, the rain falls for 117.9 days and collects up to 16.3" (414mm) of precipitation.

Snowfall

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

Daylight

In Madison, the average length of the day in August is 13h and 40min.
On the first day of the month, sunrise is at 6:09 am and sunset at 8:21 pm. On the last day of August, sunrise is at 6:36 am and sunset at 7:40 pm CDT.

Sunshine

In August, the average sunshine is 9.9h.

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 vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In August, a regular UV index of 6 translates into these guidelines:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Jun 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in August?

In August, in Madison, the average high-temperature is 84.2°F (29°C), and the average low-temperature is 64.9°F (18.3°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is estimated at 93.2°F (34°C).

What is the average humidity in August?

In Madison, the average relative humidity in August is 77%.

How many days does it rain in August?

In Madison, during August, the rain falls for 11.3 days and regularly aggregates up to 1.65" (42mm) of precipitation.

When it does not snow?

May through September are months without snowfall.

How many hours of daylight does Madison have in August?

In August, the average day length is 13h and 40min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 6:09 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 7:40 pm CDT.

How long on average sun shines in August?

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

When is the highest UV index?

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 Madison, the average daily maximum UV index in August is 6. A UV Index estimate 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
Madison, MO

Average temperature in August - Madison, MO
  • Average high temperature in August: 84.2°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 (35.1°F).

  • Average low temperature in August: 64.9°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in August
Madison, MO

Average pressure in August - Madison, 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
Madison, MO

Average wind speed in August - Madison, MO
  • Average wind speed in August: 6.5mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

Average humidity in August
Madison, MO

Average humidity in August - Madison, MO
  • Average humidity in August: 77%

The months with the highest relative humidity are May, June and July (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
Madison, MO

Average rainfall in August - Madison, MO
  • Average rainfall in August: 1.65"

The wettest month (with the highest rainfall) is May (2.4").
The driest month (with the least rainfall) is January (0.67").

Average rainfall days in August
Madison, MO

Average rainfall days in August - Madison, MO
  • Average rainfall days in August: 11.3 days

The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is January (4.3 days).

Average snowfall in August
Madison, MO

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

The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Madison, MO

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

The month with the highest number of snowfall days is January (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
Madison, MO

Average daylight in August / Average sunshine in August - Madison, 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 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 24min).

Average sunshine days in August
Madison, MO

Average sunshine days in August - Madison, MO
  • Average sunshine days in August: 16.7 days

The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is May (13.3 days).

Average UV index in August
Madison, MO

Average UV index in August - Madison, 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
Madison, MO

Average cloud cover in August - Madison, MO
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in August
Madison, MO

Average visibility in August - Madison, 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).

Madison, Missouri, USA

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