June weather forecast
Rolla, MO

Rolla embraces summer in June, with longer days favored by an increasing number of sunshine hours. June weather paints a picture of warm, sunny days perfect for outdoor activities like swimming, hiking, or barbecues in the park. Occasionally, the clouds form and showers grace the city, but they are few and far between. Humidity is in the moderate range and provides the perfect environment for maturing flora. The temperature scales greater heights in this month, with a maximum record of 86.5°F (30.3°C).

Temperature

June witnesses an increase in the average high-temperature, moving from a warm 76.3°F (24.6°C) in May to a hot 86.5°F (30.3°C). Rolla's average low-temperature in June is measured at an enjoyable 65.3°F (18.5°C).

Heat index

For June, the heat index is appraised at a sweltering 98.6°F (37°C). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

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

Rainfall

In Rolla, during June, the rain falls for 15.8 days and regularly aggregates up to 3.43" (87mm) of precipitation. Throughout the year, there are 147.2 rainfall days, and 31.02" (788mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

With an average of 14h and 48min of daylight, June has the longest days of the year.
On the first day of the month, sunrise is at 5:45 am and sunset at 8:24 pm. On the last day of June, sunrise is at 5:48 am and sunset at 8:33 pm CDT.

Sunshine

June has the most sunshine of the year, 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 value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.
Note: An average maximum UV index of 6 in June leads to these recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. 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. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.