Annual mean
Annual mean of daily highs
Annual mean of daily lows
Thornhill city, Kentucky
Official LSAD Designation: Thornhill city • Census GEOID: 2176380
• Jefferson County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Thornhill city.
Reference Weather Station: LOUISVILLE BOWMAN FLD, KY US (ID: USW00013810)
• Located 4.6 miles from community center
• Elevation: 164.6 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 42.9° | 27.1° | 35.0° | 3.28" |
| February | 47.5° | 29.8° | 38.7° | 3.27" |
| March | 57.0° | 37.8° | 47.4° | 4.37" |
| April | 68.6° | 47.5° | 58.1° | 4.69" |
| May | 77.1° | 57.4° | 67.2° | 5.16" |
| June | 84.8° | 65.9° | 75.4° | 4.68" |
| July | 87.9° | 69.3° | 78.6° | 4.56" |
| August | 87.1° | 68.1° | 77.6° | 3.53" |
| September | 80.9° | 59.9° | 70.4° | 3.61" |
| October | 69.3° | 48.2° | 58.8° | 3.65" |
| November | 56.6° | 37.8° | 47.2° | 3.44" |
| December | 46.4° | 31.2° | 38.8° | 3.88" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station LOUISVILLE BOWMAN FLD, KY US (ID: USW00013810) • 4.6 miles from community center .
This is the same reference station used for monthly normals.
Source: NOAA NCEI Global Summary of the Year.
Annual temperature data table (°F)
| Year | Annual mean (°F) | Annual mean of daily highs (°F) | Annual mean of daily lows (°F) |
|---|---|---|---|
| 2010 | 57.9 | 67.6 | 48.2 |
| 2011 | 58.7 | 67.9 | 49.6 |
| 2012 | 60.4 | 70.6 | 50.3 |
| 2013 | 56.4 | 65.5 | 47.2 |
| 2014 | 56.0 | 65.6 | 46.4 |
| 2015 | 58.0 | 67.4 | 48.5 |
| 2016 | 59.6 | 69.1 | 50.1 |
| 2017 | 59.4 | 69.2 | 49.6 |
| 2018 | 58.8 | 68.0 | 49.6 |
| 2019 | 58.4 | 68.4 | 48.4 |
| 2020 | 58.6 | 68.2 | 48.9 |
| 2021 | 58.7 | 68.4 | 48.9 |
| 2022 | 57.6 | 67.8 | 47.4 |
| 2023 | 58.2 | 68.6 | 47.9 |
| 2024 | 59.1 | 69.1 | 49.1 |
| 2025 | 57.3 | 67.2 | 47.3 |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.