August weather forecast and climate
Saint John, KS

August, the last month of the summer, in Saint John, is also a hot month, with average temperature varying between 90.1°F (32.3°C) and 67.8°F (19.9°C).

Temperature

In Saint John, the average high-temperature is practically the same as in July - a still tropical 90.1°F (32.3°C). In August, in Saint John, the average low-temperature is 67.8°F (19.9°C).

Heat index

The average heat index is evaluated at a torrid 99.5°F (37.5°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, differences in body mass, height, and shape, wind), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in Saint John is 59%.

Rainfall

In Saint John, in August, it is raining for 9.8 days, with typically 1.54" (39mm) of accumulated precipitation. In Saint John, during the entire year, the rain falls for 100.8 days and collects up to 16.57" (421mm) of precipitation.

Snowfall

May through September are months without snowfall in Saint John.

Daylight

The average length of the day in August is 13.6h.

Sunshine

In August, the average sunshine is 10.7h.

UV index

In Saint John, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 in August interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in August in Saint John?

In Saint John, Kansas, in August, the average high-temperature is 90.1°F (32.3°C), and the average low-temperature is 67.8°F (19.9°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), that represents influence of the relative humidity to air temperaure, in August is calculated to 99.5°F (37.5°C).

What is the average humidity in August in Saint John?

In August, the average relative humidity is 59%.

How much does it rain in Saint John in August?

In Saint John, Kansas, in August, it is raining for 9.8 days, with typically 1.54" (39mm) of accumulated precipitation.

When it does not snow in Saint John?

In Saint John, Kansas, snow does not fall in May through September.

How many hours of daylight does Saint John have in August?

The average length of the day in August in Saint John is 13.6h.

How many hours of sunshine does Saint John have in August?

The average sunshine in August in Saint John, Kansas, is 10.7h.

How high is the UV index in August in Saint John?

The average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV radiation.
Average temperature in August - Saint John, KS
  • Average high temperature in August: 90.1°F

The warmest month (with the highest average high temperature) is July (92.7°F).
Months with the lowest average high temperature are January and December (43.3°F).

  • Average low temperature in August: 67.8°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

Average pressure in August - Saint John, KS
  • Average pressure in August: 29.93"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.84").

Average wind speed in August - Saint John, KS
  • Average wind speed in August: 9.7mph

The windiest month (with the highest average wind speed) is April (13mph).
The calmest month (with the lowest average wind speed) is August (9.7mph).

Average humidity in August - Saint John, KS
  • Average humidity in August: 59%

The month with the highest relative humidity is December (65%).
The month with the lowest relative humidity is July (56%).

Average rainfall in August - Saint John, KS
  • Average rainfall in August: 1.54"

The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is January (0.63").

Average rainfall days in August - Saint John, KS
  • Average rainfall days in August: 9.8 days

The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is January (3.7 days).

Average snowfall in August - Saint John, KS
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.87").
Months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August - Saint John, KS
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (5.6 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in August / Average sunshine in August - Saint John, KS
  • Average daylight in August: 13.6h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in August: 10.7h

The month with the most sunshine is June (Average sunshine: 11.5h).
Months with the least sunshine are January and December (Average sunshine: 6.3).

Average sunshine days in August - Saint John, KS
  • Average sunshine days in August: 19.7 days

The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is May (13.8 days).

Average UV index in August - Saint John, KS
  • Average UV index in August: 6

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, November and December (UV index 2).

Average cloud cover in August - Saint John, KS
  • Average cloud cover in August: 20

The month with the most cloud cover is April (Cloud cover 33).
The month with the least cloud cover is June (Cloud cover 18).

Average visibility in August - Saint John, KS
  • Average visibility in August: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).