I have found several requests on Facebook groups about the weather for theme park attractions in the Orlando area. I have compiled several data-sets to create a climatology of Orlando, FL. This climatology is based off of 30 years of weather observations at Orlando International Airport (MCO) and encompasses several statistics to derive the statistical expectancy of weather events during guest visits.

The climate of Orlando, FL is humid subtropical (Cfa). This classification is based off of the Köppen-Geiger Climate Classifications. I have produced several graphical representations of the climate of Orlando, FL.

The temperature of Orlando, FL has an apparent yearly cycle where the hottest months occur during June- August. The average temperatures during Jun-August are 80 degrees Fahrenheit with an average maximum temperature of 90 degrees Fahrenheit. The coolest months in Orlando, FL are December- March with an average temperature around 72 degrees Fahrenheit with an average low temperature in the lower 50's. The highest temperature recorded during the 30 year period was 100.4 degrees Fahrenheit recorded on June 18, 1998. The coldest temperature recorded during the 30 year period was 19 degrees Fahrenheit recorded on January 21, 1985.

Relative humidity (RH) is the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at the same temperature. In laymen’s terms, it is the stickiness you feel in the air, which may cause some discomfort. Relative humidity in the Orlando, FL area has unique characteristics. I classified three time periods during a day to calculate relative humidity for. For those who are curious, I calculated Relative Humidity via the Clausius-Claperyon Equation and observed meteorology reports from KMCO. These three time periods were broken down as "Park Open to Lunch", "Lunch to Park Close" and "Night". The diurnal pattern affects the Relative Humidity, so these time frames were taken into account to display each unique time period. Orlando, FL remains humid throughout the year. I also broke down the days into these three time frames to give a more realistic approach to what the relative humidity will be during your time in the parks. A period of higher relative humidity can be noted in the summer months, June-September. There was a noted dip in relative humidity throughout the January-April.

When talking about Relative Humidity, precipitation is usually the next topic. The average monthly precipitation has a unique cycle. Orlando, FL has a rainy season, which is normal in a sub-tropical environment. The rainy months in Orlando, FL is June- September with average monthly precipitation totals averaging above 6 inches. The months with the least amount of rain occur during November through February.

During the summer months in Orlando, FL, there is an increased probability of a rain event. Most of these rain events occur in the form of a thunderstorm. June through August have the highest count of thunderstorm activity than any other month. The highest chance for precipitation in a given day was found to occur during the months June through September. The probability of rain occurring in a given day during these months was greater than 50%. The way to read the below graph is: "In (month), there is a (percentage shown) chance of rain in any given day during that month." This graph does not show the duration of these rain events. With that said, this does not mean that if there is a high chance of rain in a given day, the whole day will be a wash out.

It is also important to note other weather features in Orlando, FL not shown in graphs and fancy charts. Fog is a predominant feature in Orlando, FL. There are several types of fog, but I decided to simplify things and classify all fog events into one category. Fog occurs frequently in Orlando, FL. The months of December and January have the highest occurrence of fog with a probability of occurrence around 20%.

Frozen precipitation has been known to fall in Orlando, FL. Frozen precipitation has been classified as the sum of snow pellets, small hail, and sleet events. These events are extremely few and far between, but worth noting. The months with recorded Frozen Precipitation events are January, May, June, and August. Another classification of frozen precipitation is Hail that does not meet the classification of small hail. These events are more frequent than the small hail and sleet events. The months with the highest probability (around 1-2% chance) are the months of June through September. These hail events coincide greatly with the increase in thunderstorm activity in the wet-summer season.

It is important to remember when a thunderstorm occurs, seek shelter. Lightning associated with these thunderstorms pose a great risk, and whenever thunder is heard lightning is present. The National Oceanic and Atmospheric Administration have a saying, "When thunder roars, go indoors." It is an important concept to adhere to during these thunderstorms.

Hurricanes also pose a threat to the Orlando, FL area. The Atlantic Hurricane Season starts June 1 and ends November 30.

Overall, the weather in Florida is exciting and ever changing.  Florida has the nickname, “The Sunshine State” for a reason.  Florida receives on average approximately 240 days with sunshine, with 90 of them being completely sunny and 150 of them being partly sunny days.  

I hope all of this information aids you in your decision making for your vacation plans. If there are any questions, comments, or suggestions please do not hesitate to drop me an email at wxextreme@gmail.com or post in the Facebook box below.