December is one of the cooler months of the year in Spring Hill, with average highs near 21.3°C and lows around 12.2°C (mean 16.8°C). It is one of the drier months, averaging 65 mm of rainfall and 80% relative humidity across the period.
December is one of the cooler months of the year in Spring Hill. Across 45 years of records, the warmest December in Spring Hill was 2015 — when the month averaged 21.3°C — while the coldest was 2010 at 11.2°C. Typical December days reach 21.3°C with nights near 12.2°C. The long-term trend is warming, about 0.4°C per decade.
December is one of the drier months in Spring Hill, averaging 65 mm of rainfall. The wettest December on record was 1997 with 310 mm, while the driest was 1984 at 6 mm.
Relative humidity in Spring Hill during December averages 80%. The most humid December was 1994 at 86%, and the least humid was 2010 at 68%.
December receives about 3.1 kWh/m²/day of solar energy in Spring Hill. The sunniest December was 2010 at 3.5 kWh/m²/day, and the cloudiest was 1986 at 2.5.
Average wind speed in Spring Hill during December is 3 m/s. The windiest December was 1983 at 3.5 m/s, while the calmest was 2021 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.0°C | 16.8°C | 16.3°C | 17.5°C | 17.1°C | +1.1°C |
| Avg High | 20.2°C | 21.3°C | 20.9°C | 22.2°C | 21.8°C | +1.6°C |
| Avg Low | 11.6°C | 12.4°C | 11.7°C | 12.8°C | 12.4°C | +0.8°C |
| Avg Rain | 71 mm | 65 mm | 76 mm | 58 mm | 47 mm | -24 mm |
December temperatures in Spring Hill have risen by about 1.4°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -4.8°C (1983) to a record high of 28.2°C (1991).
Rainfall in December is one of the drier months, averaging 65 mm, with a wettest year of 310 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.5°C per decade while lows rose 0.3°C per decade, widening the gap between day and night.
A good time to visit Spring Hill
December is a good time to visit Spring Hill, with days averaging 21.3°C and nights around 12.2°C (mean 16.8°C, cooler than Spring Hill's yearly average) and moderate rainfall. April and October 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 | 23.0°C | 17.9°C | 12.9°C | 26.5°C | 4.0°C | 39 mm | 78% | 2.7 m/s | — |
| 2024 | 21.9°C | 16.8°C | 11.8°C | 27.0°C | 3.8°C | 22 mm | 78% | 2.9 m/s | 3.3 |
| 2023 | 20.8°C | 16.8°C | 12.8°C | 27.2°C | 6.1°C | 102 mm | 82% | 3.3 m/s | 2.9 |
| 2022 | 21.3°C | 16.6°C | 11.9°C | 26.5°C | -1.1°C | 48 mm | 79% | 2.6 m/s | 3.1 |
| 2021 | 24.3°C | 19.8°C | 15.2°C | 27.2°C | 7.3°C | 24 mm | 85% | 2.1 m/s | 3.4 |
| 2020 | 19.8°C | 14.7°C | 9.7°C | 25.3°C | 1.8°C | 49 mm | 78% | 2.9 m/s | 3.4 |
| 2019 | 22.5°C | 18.1°C | 13.7°C | 26.4°C | 5.3°C | 101 mm | 82% | 3.4 m/s | 3 |
| 2018 | 20.8°C | 16.8°C | 12.8°C | 26.8°C | 4.9°C | 209 mm | 82% | 3.1 m/s | 3 |
| 2017 | 22.0°C | 17.3°C | 12.7°C | 26.4°C | 4.7°C | 40 mm | 82% | 2.4 m/s | 3.3 |
| 2016 | 24.6°C | 19.6°C | 14.5°C | 28.0°C | 6.2°C | 20 mm | 75% | 2.8 m/s | 3.4 |
| 2015 🔥 | 25.5°C | 21.3°C | 17.0°C | 28.2°C | 7.1°C | 25 mm | 83% | 2.9 m/s | 3 |
| 2014 | 20.6°C | 16.7°C | 12.7°C | 24.9°C | 5.9°C | 60 mm | 85% | 2.5 m/s | 3 |
| 2013 | 23.4°C | 18.6°C | 13.7°C | 27.5°C | 6.3°C | 41 mm | 80% | 2.7 m/s | 3.2 |
| 2012 | 22.4°C | 17.3°C | 12.3°C | 26.0°C | 4.1°C | 57 mm | 79% | 2.7 m/s | 3 |
| 2011 | 23.3°C | 18.2°C | 13.2°C | 25.9°C | 5.7°C | 12 mm | 79% | 2.9 m/s | 3.3 |
| 2010 ❄️ | 16.7°C | 11.2°C | 5.8°C | 24.2°C | -0.3°C | 18 mm | 68% | 3.4 m/s | 3.5 |
| 2009 | 20.1°C | 16.1°C | 12.1°C | 26.1°C | 3.5°C | 114 mm | 83% | 3.3 m/s | 2.6 |
| 2008 | 22.3°C | 17.4°C | 12.5°C | 26.4°C | 4.1°C | 29 mm | 78% | 2.8 m/s | 3.4 |
| 2007 | 23.7°C | 18.8°C | 14.0°C | 27.2°C | 4.1°C | 67 mm | 80% | 2.5 m/s | 3.3 |
| 2006 | 23.4°C | 18.9°C | 14.5°C | 26.9°C | 5.6°C | 84 mm | 80% | 3.1 m/s | 2.8 |
| 2005 | 18.9°C | 14.5°C | 10.1°C | 23.3°C | 3.8°C | 91 mm | 78% | 3.2 m/s | 3.1 |
| 2004 | 19.1°C | 14.6°C | 10.2°C | 25.6°C | 1.6°C | 47 mm | 81% | 3.3 m/s | 3 |
| 2003 | 19.4°C | 14.4°C | 9.4°C | 24.7°C | 1.8°C | 37 mm | 78% | 3.1 m/s | 3.4 |
| 2002 | 18.7°C | 14.2°C | 9.6°C | 24.4°C | 4.5°C | 248 mm | 82% | 3.2 m/s | 3 |
| 2001 | 23.1°C | 19.1°C | 15.0°C | 28.0°C | 5.7°C | 25 mm | 78% | 2.7 m/s | 3.2 |
| 2000 | 20.1°C | 14.8°C | 9.6°C | 27.7°C | -0.9°C | 23 mm | 73% | 3.3 m/s | 3.2 |
| 1999 | 21.0°C | 16.4°C | 11.7°C | 25.8°C | 2.2°C | 37 mm | 76% | 2.9 m/s | 3.1 |
| 1998 | 24.0°C | 19.4°C | 14.8°C | 27.7°C | 6.3°C | 23 mm | 79% | 2.6 m/s | 3.2 |
| 1997 🌧️ | 18.8°C | 15.3°C | 11.8°C | 24.8°C | 3.7°C | 310 mm | 86% | 3.3 m/s | 2.7 |
| 1996 | 21.5°C | 16.7°C | 11.9°C | 26.3°C | 0.7°C | 72 mm | 78% | 3 m/s | 3 |
| 1995 | 19.8°C | 15.2°C | 10.6°C | 25.7°C | 1.1°C | 57 mm | 78% | 3 m/s | 3.1 |
| 1994 | 21.2°C | 17.2°C | 13.3°C | 25.9°C | 7.2°C | 49 mm | 86% | 3 m/s | 2.9 |
| 1993 | 19.5°C | 14.7°C | 9.9°C | 26.2°C | 3.9°C | 45 mm | 73% | 3.3 m/s | 3.2 |
| 1992 | 21.0°C | 16.8°C | 12.6°C | 24.6°C | 5.6°C | 16 mm | 86% | 2.9 m/s | 2.9 |
| 1991 | 22.4°C | 17.8°C | 13.1°C | 28.2°C | 4.9°C | 20 mm | 76% | 2.9 m/s | 3.1 |
| 1990 | 23.5°C | 18.7°C | 13.8°C | 27.7°C | 5.6°C | 23 mm | 75% | 2.8 m/s | 3.2 |
| 1989 | 16.9°C | 12.4°C | 7.9°C | 23.9°C | -4.6°C | 113 mm | 79% | 3 m/s | 3 |
| 1988 | 19.7°C | 15.2°C | 10.6°C | 23.9°C | 1.7°C | 33 mm | 84% | 2.6 m/s | 3.2 |
| 1987 | 21.5°C | 17.1°C | 12.8°C | 26.0°C | 3.2°C | 17 mm | 79% | 3 m/s | 3 |
| 1986 | 21.6°C | 17.9°C | 14.2°C | 27.0°C | 8.7°C | 73 mm | 82% | 3.4 m/s | 2.5 |
| 1985 | 18.7°C | 14.0°C | 9.3°C | 25.2°C | -2.8°C | 47 mm | 74% | 3.2 m/s | 3.1 |
| 1984 | 23.9°C | 19.2°C | 14.4°C | 27.0°C | 2.8°C | 6 mm | 77% | 2.3 m/s | 3 |
| 1983 | 18.5°C | 14.6°C | 10.6°C | 25.6°C | -4.8°C | 170 mm | 86% | 3.5 m/s | — |
| 1982 | 21.9°C | 18.1°C | 14.3°C | 26.4°C | 4.1°C | 50 mm | 84% | 3.4 m/s | — |
| 1981 | 19.5°C | 15.1°C | 10.7°C | 26.4°C | -0.8°C | 135 mm | 75% | 3.1 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 21.3°C with lows near 12.2°C (mean 16.8°C), based on 45 years of NASA POWER data.
December averages 65 mm of rainfall in Spring Hill, one of the drier months. The wettest on record was 310 mm in 1997.
The hottest December reached 28.2°C in 1991. The coldest dipped to -4.8°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1.4°C. Daytime highs moved from 20.5°C to 22.3°C and overnight lows from 11.9°C to 12.9°C over the same span.
December is one of the cooler months of the year in Spring Hill and one of the drier months, so plan for around 21.3°C daytime highs and 12.2°C at night.
Not quite — December is the 3rd coolest month in Spring Hill, averaging 16.8°C.
For December in Spring Hill, pack light layers you can adjust through the day, with typical highs of 21.3°C and lows of 12.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 80% — quite humid.
Average wind speed in December is 3 m/s. The windiest December on record averaged 3.5 m/s (1983).
The wettest December on record was 1997 with 310 mm. On average, December sees 65 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 Spring Hill 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.
