Climate averages 1991–2020
Louisville weather
in December.
A cold, wet month: the 11th warmest and the joint 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Louisville: daytime highs average 7.1°C and nights cool to about -0.5°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 102 mm of rain on roughly 10 days, which makes December a wet month (the joint 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 34 min on an average December day.
The nearest other city in this atlas is Lexington (116 km away). In December its highs average 7.1°C, about as warm as Louisville, with 106 mm of rain.
Among the 498 cities listed in the United States, Louisville ranks joint 299th of 498 for the warmest December highs and joint 389th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Louisville is 3.5°C cooler than that mean.
From December to January, average highs fall by 1.9°C to 5.2°C, and monthly rainfall falls from 102 mm to 91 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Louisville climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.2°C-2.9°C | -2.9°C | 91 | 9.7 | 9.810 h |
| February | 7.8°C-1.6°C | -1.6°C | 84 | 9.3 | 10.711 h |
| March | 13.0°C2.7°C | 2.7°C | 114 | 11.4 | 11.912 h |
| April | 19.1°C8.3°C | 8.3°C | 127 | 12.0 | 13.213 h |
| May | 23.9°C13.9°C | 13.9°C | 128 | 12.8 | 14.214 h |
| June | 28.5°C18.7°C | 18.7°C | 102 | 11.7 | 14.815 h |
| July | 30.4°C20.8°C | 20.8°C | 101 | 11.8 | 14.515 h |
| August | 30.0°C20.2°C | 20.2°C | 71 | 9.1 | 13.614 h |
| September | 26.5°C16.5°C | 16.5°C | 77 | 7.7 | 12.512 h |
| October | 19.9°C10.2°C | 10.2°C | 85 | 8.1 | 11.211 h |
| November | 12.6°C4.0°C | 4.0°C | 89 | 9.3 | 10.110 h |
| December, selected | 7.1°C-0.5°C | -0.5°C | 102 | 10.1 | 9.610 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Lexington in DecemberUnited States · 116 kmHigh 7.1°C · Low -0.4°C · 106 mm rain
- Bloomington (Indiana), United States in DecemberUnited States · 121 kmHigh 5.2°C · Low -1.9°C · 86 mm rain
- Cincinnati in DecemberUnited States · 145 kmHigh 5.6°C · Low -1.9°C · 92 mm rain
- Evansville in DecemberUnited States · 160 kmHigh 7.1°C · Low -0.2°C · 102 mm rain
- Indianapolis in DecemberUnited States · 172 kmHigh 4.2°C · Low -2.9°C · 78 mm rain
- Fishers in DecemberUnited States · 190 kmHigh 4.0°C · Low -3.3°C · 76 mm rain
- Carmel in DecemberUnited States · 194 kmHigh 3.9°C · Low -3.3°C · 76 mm rain
- Dayton in DecemberUnited States · 215 kmHigh 4.6°C · Low -2.3°C · 85 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Louisville) is explained once on the Louisville year overview and on the Sources, method and limits page.