Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
Saint Charles's average high-temperature marks a still warm 81.5°F (27.5°C) with the advent of August, closely mirroring that of the preceding month. Throughout August, the temperature in Saint Charles tends to fall to a consistent average low of 62.6°F (17°C).Heat index
In August, the heat index is appraised at a hot 87.8°F (31°C). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.Know that the heat index computations account for shaded terrains and slight winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
In August, the average relative humidity is 79%.Rainfall
In August, the rain falls for 13.7 days. Throughout August, 2.6" (66mm) of precipitation is accumulated. In Saint Charles, during the entire year, the rain falls for 133 days and collects up to 26.14" (664mm) of precipitation.Snowfall
In Saint Charles, snow does not fall in June through September.Daylight
In August, the average length of the day is 13h and 47min.On the first day of August in Saint Charles, sunrise is at 6:11 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 7:49 pm CDT.
Sunshine
The average sunshine in August 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 reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In August, a daily UV index of 6 turns into the following recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
What is the usual temperature for Saint Charles in August?
What is the average humidity in August in Saint Charles?
How many days does it rain in August in Saint Charles?
When it does not snow in Saint Charles?
How many hours of daylight does Saint Charles have in August?
What time are sunrise and sunset in August in Saint Charles?
How long on average sun shines in August in Saint Charles?
When is the highest UV index in Saint Charles?
How high is the UV index in August in Saint Charles?
Average temperature in August
Saint Charles, IA
- Average high temperature in August: 81.5°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in August: 62.6°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in August
Saint Charles, IA
- Average pressure in August: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in August
Saint Charles, IA
- Average wind speed in August: 7mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in August
Saint Charles, IA
- Average humidity in August: 79%
The months with the highest relative humidity are January, February and June (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
Saint Charles, IA
- Average rainfall in August: 2.6"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in August
Saint Charles, IA
- Average rainfall days in August: 13.7 days
The month with the highest number of rainy days is June (17.9 days).
The months with the least rainy days are January and February (3.8 days).
Average snowfall in August
Saint Charles, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Saint Charles, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (9.1 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 Charles, IA
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- 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
Saint Charles, IA
- Average sunshine days in August: 13.8 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in August
Saint Charles, IA
- 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, October, November and December (UV index 2).
Average cloud cover in August
Saint Charles, IA
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in August
Saint Charles, IA
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Saint Charles, Iowa, USA
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