December is one of the cooler months of the year in Kissimmee, with average highs near 22.5°C and lows around 11.8°C (mean 17.2°C). It is one of the drier months, averaging 61 mm of rainfall and 79% relative humidity across the period.
December is one of the cooler months of the year in Kissimmee. Across 45 years of records, the warmest December in Kissimmee was 2015 — when the month averaged 22.2°C — while the coldest was 2010 at 11.2°C. Typical December days reach 22.5°C with nights near 11.8°C. The long-term trend is warming, about 0.5°C per decade.
December is one of the drier months in Kissimmee, averaging 61 mm of rainfall. The wettest December on record was 2002 with 269 mm, while the driest was 1984 at 8 mm.
Relative humidity in Kissimmee during December averages 79%. The most humid December was 1994 at 90%, and the least humid was 2010 at 62%.
December receives about 3.1 kWh/m²/day of solar energy in Kissimmee. The sunniest December was 2010 at 3.7 kWh/m²/day, and the cloudiest were 1986, 1997 and 2009 at 2.6.
Average wind speed in Kissimmee during December is 2.4 m/s. The windiest Decembers were 2010, 2019 and 2023 at 2.8 m/s, while the calmest was 2021 at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.2°C | 17.1°C | 16.8°C | 18.3°C | 17.7°C | +1.5°C |
| Avg High | 21.3°C | 22.4°C | 22.1°C | 23.8°C | 23.2°C | +1.9°C |
| Avg Low | 11.0°C | 11.9°C | 11.5°C | 12.7°C | 12.2°C | +1.2°C |
| Avg Rain | 67 mm | 64 mm | 71 mm | 47 mm | 52 mm | -16 mm |
December temperatures in Kissimmee have risen by about 1.7°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -7.1°C (1989) to a record high of 30.4°C (2018).
Rainfall in December is one of the drier months, averaging 61 mm, with a wettest year of 269 mm.
A good time to visit Kissimmee
December is a good time to visit Kissimmee, with days averaging 22.5°C and nights around 11.8°C (mean 17.2°C, cooler than Kissimmee's yearly average) and moderate rainfall. April and November are marginally more temperate, but December still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 24.5°C | 18.5°C | 12.5°C | 29.2°C | 1.6°C | 57 mm | 78% | 2.2 m/s | — |
| 2024 | 23.7°C | 17.9°C | 12.1°C | 28.0°C | 3.8°C | 41 mm | 79% | 2.5 m/s | 3.2 |
| 2023 | 22.0°C | 17.7°C | 13.3°C | 28.4°C | 5.7°C | 101 mm | 82% | 2.8 m/s | 2.9 |
| 2022 | 22.2°C | 16.9°C | 11.6°C | 26.8°C | -2.7°C | 35 mm | 80% | 2.1 m/s | 3 |
| 2021 | 26.1°C | 20.2°C | 14.4°C | 28.8°C | 5.4°C | 52 mm | 82% | 1.8 m/s | 3.4 |
| 2020 | 20.8°C | 14.9°C | 9.0°C | 27.2°C | 0.0°C | 22 mm | 79% | 2.3 m/s | 3.3 |
| 2019 | 23.8°C | 18.8°C | 13.8°C | 28.5°C | 3.6°C | 128 mm | 82% | 2.8 m/s | 3 |
| 2018 | 22.9°C | 17.6°C | 12.3°C | 30.4°C | 3.2°C | 101 mm | 80% | 2.6 m/s | 3 |
| 2017 | 23.2°C | 17.5°C | 11.7°C | 27.7°C | 1.3°C | 18 mm | 82% | 2 m/s | 3.3 |
| 2016 | 26.2°C | 20.5°C | 14.8°C | 30.0°C | 5.4°C | 31 mm | 76% | 2.3 m/s | 3.3 |
| 2015 🔥 | 26.8°C | 22.2°C | 17.6°C | 30.0°C | 8.3°C | 31 mm | 84% | 2.6 m/s | 2.9 |
| 2014 | 22.2°C | 17.2°C | 12.2°C | 26.9°C | 3.1°C | 48 mm | 84% | 2 m/s | 3 |
| 2013 | 26.0°C | 20.1°C | 14.2°C | 30.1°C | 5.7°C | 21 mm | 76% | 2.4 m/s | 3.2 |
| 2012 | 24.3°C | 18.3°C | 12.2°C | 28.4°C | 0.7°C | 52 mm | 77% | 2.3 m/s | 3.1 |
| 2011 | 24.5°C | 19.2°C | 13.8°C | 28.9°C | 4.9°C | 26 mm | 76% | 2.4 m/s | 3.3 |
| 2010 ❄️ | 18.4°C | 11.2°C | 4.1°C | 25.6°C | -3.9°C | 17 mm | 62% | 2.8 m/s | 3.7 |
| 2009 | 21.8°C | 16.9°C | 12.1°C | 28.3°C | 1.1°C | 113 mm | 82% | 2.7 m/s | 2.6 |
| 2008 | 23.0°C | 17.6°C | 12.2°C | 27.1°C | 1.9°C | 23 mm | 80% | 2.3 m/s | 3.4 |
| 2007 | 25.2°C | 19.7°C | 14.1°C | 28.7°C | 2.5°C | 33 mm | 80% | 2.1 m/s | 3.3 |
| 2006 | 24.5°C | 20.0°C | 15.6°C | 30.0°C | 4.5°C | 79 mm | 78% | 2.6 m/s | 2.7 |
| 2005 | 20.1°C | 14.7°C | 9.4°C | 24.8°C | 2.7°C | 45 mm | 80% | 2.6 m/s | 3.1 |
| 2004 | 20.4°C | 15.3°C | 10.2°C | 27.3°C | -0.1°C | 55 mm | 81% | 2.5 m/s | 2.9 |
| 2003 | 21.3°C | 15.3°C | 9.2°C | 26.7°C | 0.8°C | 53 mm | 76% | 2.5 m/s | 3.4 |
| 2002 🌧️ | 19.9°C | 14.3°C | 8.6°C | 26.4°C | 1.3°C | 269 mm | 84% | 2.4 m/s | 3.1 |
| 2001 | 23.0°C | 18.5°C | 14.0°C | 27.3°C | 2.5°C | 21 mm | 83% | 2.1 m/s | 3.2 |
| 2000 | 22.1°C | 15.9°C | 9.7°C | 29.5°C | -3.9°C | 24 mm | 70% | 2.7 m/s | 3.2 |
| 1999 | 21.1°C | 15.9°C | 10.8°C | 26.8°C | 1.2°C | 53 mm | 81% | 2.2 m/s | 3.1 |
| 1998 | 25.8°C | 20.2°C | 14.7°C | 29.2°C | 4.2°C | 28 mm | 78% | 2.1 m/s | 3.1 |
| 1997 | 20.1°C | 15.5°C | 10.8°C | 26.5°C | 0.7°C | 252 mm | 87% | 2.6 m/s | 2.6 |
| 1996 | 23.1°C | 17.3°C | 11.5°C | 28.0°C | -0.8°C | 56 mm | 77% | 2.3 m/s | 3.1 |
| 1995 | 20.2°C | 15.0°C | 9.8°C | 26.0°C | -2.3°C | 73 mm | 80% | 2.3 m/s | 3.1 |
| 1994 | 21.7°C | 17.3°C | 13.0°C | 27.0°C | 4.0°C | 92 mm | 90% | 2.3 m/s | 2.7 |
| 1993 | 21.0°C | 15.1°C | 9.1°C | 27.1°C | 1.6°C | 30 mm | 72% | 2.6 m/s | 3.3 |
| 1992 | 22.5°C | 17.5°C | 12.5°C | 26.4°C | 3.6°C | 20 mm | 84% | 2.3 m/s | 2.8 |
| 1991 | 23.3°C | 18.1°C | 12.9°C | 28.6°C | 3.9°C | 17 mm | 78% | 2.3 m/s | 3.1 |
| 1990 | 24.8°C | 19.2°C | 13.5°C | 29.9°C | 5.1°C | 22 mm | 74% | 2.2 m/s | 3.1 |
| 1989 | 17.9°C | 12.2°C | 6.4°C | 25.2°C | -7.1°C | 125 mm | 79% | 2.3 m/s | 3 |
| 1988 | 21.2°C | 15.8°C | 10.3°C | 26.9°C | -1.3°C | 26 mm | 82% | 2.1 m/s | 3.2 |
| 1987 | 21.6°C | 16.5°C | 11.4°C | 25.8°C | 0.0°C | 13 mm | 83% | 2.3 m/s | 2.9 |
| 1986 | 23.4°C | 18.9°C | 14.4°C | 28.7°C | 8.5°C | 92 mm | 80% | 2.7 m/s | 2.6 |
| 1985 | 19.0°C | 13.5°C | 7.9°C | 26.1°C | -5.6°C | 61 mm | 77% | 2.4 m/s | 3.2 |
| 1984 | 24.5°C | 19.2°C | 13.9°C | 27.6°C | 0.4°C | 8 mm | 76% | 1.9 m/s | 2.9 |
| 1983 | 20.3°C | 15.7°C | 11.0°C | 27.8°C | -6.7°C | 161 mm | 85% | 2.7 m/s | — |
| 1982 | 23.1°C | 18.8°C | 14.4°C | 27.6°C | 2.3°C | 41 mm | 81% | 2.7 m/s | — |
| 1981 | 21.0°C | 15.2°C | 9.4°C | 28.3°C | -3.0°C | 80 mm | 74% | 2.6 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 22.5°C with lows near 11.8°C (mean 17.2°C), based on 45 years of NASA POWER data.
December averages 61 mm of rainfall in Kissimmee, one of the drier months. The wettest on record was 269 mm in 2002.
The hottest December reached 30.4°C in 2018. The coldest dipped to -7.1°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1.7°C. Daytime highs moved from 21.6°C to 23.7°C and overnight lows from 11.3°C to 12.8°C over the same span.
December is one of the cooler months of the year in Kissimmee and one of the drier months, so plan for around 22.5°C daytime highs and 11.8°C at night.
Not quite — December is the 2nd coolest month in Kissimmee, averaging 17.2°C.
For December in Kissimmee, pack light layers you can adjust through the day, with typical highs of 22.5°C and lows of 11.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 79% — quite humid.
Average wind speed in December is 2.4 m/s. The windiest December on record averaged 2.8 m/s (2010).
The wettest December on record was 2002 with 269 mm. On average, December sees 61 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Kissimmee behaves each December, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for December specifically, along with year-by-year records and how the month has changed over the decades.
