August weather forecast
Derby, KS

In August, Derby experiences a minor decline in temperatures, with the mercury hanging between 68.9°F (20.5°C) and 89.6°F (32°C). Keeping up with July patterns, snowfall continues to remain negligible. The duration of daily sunlight reduces slightly from the previous month, offering a hint of the encroaching fall. Average wind speed drops even further to 8.7mph (14km/h). Rainfall levels increase compared to July, adding to the humidity and signaling the beginning of a transition towards cooler months.

Temperature

The transition into August notes an average high-temperature of a still hot 89.6°F (32°C), revealing a mild distinction from the 91.9°F (33.3°C) in July. In the month of August, the temperature generally rests at an average low of 68.9°F (20.5°C).

Heat index

During August, the heat index is appraised at a torrid 100.4°F (38°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

The average relative humidity in August in Derby is 64%.

Rainfall

In Derby, in August, during 12.4 rainfall days, 3.27" (83mm) of precipitation is typically accumulated. In Derby, during the entire year, the rain falls for 126.5 days and collects up to 25" (635mm) of precipitation.

Snowfall

In Derby, snow does not fall in June through September.

Daylight

In August, the average length of the day is 13h and 34min.
On the first day of the month, sunrise is at 6:33 am and sunset at 8:36 pm. On the last day of August, sunrise is at 6:59 am and sunset at 7:59 pm CDT.

Sunshine

In Derby, the average sunshine in August is 11h.

UV index

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The daily high UV index of 6 in August translates into this advice:
Resist extreme sun exposure. Guarding against solar damage is essential. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.