June weather forecast
Columbia, MO

In Columbia, June marks the onset of consistently hot weather, as daytime temperatures start climbing well into the 80s°F. Receiving the highest daylight hours of the year, around 14.9 hours, the city lives up to its summer reputation. Life is outdoors-centric during these warm months, with park visits and barbecues setting the tone for a classic Midwestern summer. June brings with it long, lazy days that encourage participation in a variety of music festivals and concerts. The weather in Columbia during this month is conducive for residents and tourists alike, making it a sought-after summer destination.

Temperature

June brings a temperature increase, with average high-temperatures moving from May's moderately hot 74.8°F (23.8°C) to a still warm 84.7°F (29.3°C). In June, Columbia experiences an average nighttime temperature of 65.1°F (18.4°C).

Heat index

The heat index value during June is appraised at a torrid 95°F (35°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke 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', arises from combining readings of air temperature and relative moisture content. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

In Columbia, the average relative humidity in June is 76%.

Rainfall

In Columbia, in June, it is raining for 11 days, with typically 0.98" (25mm) of accumulated precipitation. In Columbia, during the entire year, the rain falls for 95.5 days and collects up to 8.62" (219mm) of precipitation.

Snowfall

April through September are months without snowfall.

Daylight

June has the longest days of the year, with an average of 14h and 54min of daylight.
On the first day of the month, sunrise is at 5:45 am and sunset at 8:29 pm. On the last day of June, sunrise is at 5:47 am and sunset at 8:38 pm CDT.

Sunshine

The months with the most sunshine are June and July, with an average of 10.4h of sunshine.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 6 in June interprets into the following advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.