June weather forecast
Duke, MO

The first month of the summer, June, is a hot month in Duke, Missouri, with an average temperature ranging between min 64.9°F (18.3°C) and max 86.5°F (30.3°C).

Temperature

The start of June signals an increase in the average high-temperature, moving from a warm 75.9°F (24.4°C) in May to a hot 86.5°F (30.3°C). June nights are characterized by a significant departure from the daytime highs, dropping to an average temperature of 64.9°F (18.3°C).

Heat index

June's average heat index is calculated to be a very hot 98.6°F (37°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In Duke, the average relative humidity in June is 74%.

Rainfall

In June, the rain falls for 16.3 days. Throughout June, 3.35" (85mm) of precipitation is accumulated. In Duke, during the entire year, the rain falls for 148.9 days and collects up to 32.4" (823mm) of precipitation.

Snowfall

In Duke, snow does not fall in June through October.

Daylight

With an average of 14h and 42min of daylight, June has the longest days of the year.
On the first day of the month, sunrise is at 5:47 am and sunset at 8:24 pm. On the last day of June, sunrise is at 5:50 am and sunset at 8:33 pm CDT.

Sunshine

The month with the most sunshine is June, with an average of 10.6h of sunshine.

UV index

The months with the highest UV index are May 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 unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in June interprets into the following advice:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Experience reduced UV exposure by about half when donning a wide-brim hat.