August weather forecastSaint Joseph, MO
August
Weather in August
August represents a turning point in Saint Joseph's weather, with the hot temperatures of July giving way to the milder weather of September. The city experiences a considerable dip in temperature alongside a decrease in rainfall. With a peak temperature reaching 84°F (28.9°C), the transition from July's scorching heat is evident. The number of daylight hours begins to shrink as summer draws to a close. In essence, the weather in August in Saint Joseph offers a breather from the intense summer heat, setting the stage for the forthcoming autumn season.Temperature
The arrival of August marks a slight shift to an average high-temperature of a moderately hot 84°F (28.9°C) from July's 86°F (30°C). Saint Joseph, in August, experiences an average temperature of 64.9°F (18.3°C) at night.Heat index
For August, the heat index is computed to be a tropical 93.2°F (34°C). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. 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 extremely vital to babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Humidity
In August, the average relative humidity is 78%.Rainfall
In Saint Joseph, in August, it is raining for 13.9 days, with typically 2.83" (72mm) of accumulated precipitation. Throughout the year, there are 133.5 rainfall days, and 27.28" (693mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Saint Joseph, the average length of the day in August is 13h and 41min.On the first day of August, sunrise is at 6:19 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 7:51 pm CDT.
Sunshine
In Saint Joseph, the average sunshine in August is 10h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index in Saint Joseph. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 6 in August transforms into the following instructions:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Saint Joseph, MO
- Average high temperature in August: 84°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (34.7°F).
- Average low temperature in August: 64.9°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in August
Saint Joseph, MO
- Average pressure in August: 29.95"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in August
Saint Joseph, MO
- Average wind speed in August: 6.4mph
The windiest months (with the highest average wind speed) are February and March (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.4mph).
Average humidity in August
Saint Joseph, MO
- Average humidity in August: 78%
The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall in August
Saint Joseph, MO
- Average rainfall in August: 2.83"
The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is February (0.87").
Average rainfall days in August
Saint Joseph, MO
- Average rainfall days in August: 13.9 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in August
Saint Joseph, MO
- Average snowfall in August: 0"
The month with the highest snowfall is January (2.68").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Saint Joseph, MO
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Saint Joseph, MO
- Average daylight in August: 13h and 42min
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: 10h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in August
Saint Joseph, MO
- Average sunshine days in August: 14.4 days
The month with the most sunshine days is December (21.1 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in August
Saint Joseph, 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
Saint Joseph, MO
- Average cloud cover in August: 28
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in August
Saint Joseph, 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).
