Climate averages 1991–2020
Amarillo weather
in December.
A cool, fairly dry month: the coolest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Amarillo: daytime highs average 10.1°C and nights cool to about -1.4°C. By daytime temperature it is the coolest month of the year.
Expect about 27 mm of rain on roughly 4 days, which makes December a fairly dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 50 min on an average December day.
The nearest other city in this atlas is Lubbock (183 km away). In December its highs average 12.4°C, 2.3°C warmer than Amarillo, with 23 mm of rain.
Among the 498 cities listed in the United States, Amarillo ranks joint 258th of 498 for the warmest December highs and joint 40th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Amarillo is 0.4°C cooler than that mean.
From December to January, average highs rise by 0.1°C to 10.2°C, and monthly rainfall falls from 27 mm to 20 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
Amarillo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 10.2°C-1.9°C | -1.9°C | 20 | 3.3 | 10.110 h |
| February | 12.7°C-0.3°C | -0.3°C | 17 | 3.6 | 10.911 h |
| March | 17.3°C3.9°C | 3.9°C | 38 | 5.1 | 11.912 h |
| April | 21.7°C8.2°C | 8.2°C | 42 | 5.2 | 13.113 h |
| May | 26.2°C13.4°C | 13.4°C | 60 | 7.1 | 14.014 h |
| June | 30.9°C18.6°C | 18.6°C | 53 | 8.6 | 14.514 h |
| July | 32.4°C21.0°C | 21.0°C | 45 | 7.7 | 14.314 h |
| August | 31.4°C20.4°C | 20.4°C | 59 | 8.8 | 13.513 h |
| September | 27.5°C16.2°C | 16.2°C | 40 | 6.3 | 12.412 h |
| October | 21.9°C9.9°C | 9.9°C | 48 | 5.3 | 11.311 h |
| November | 15.4°C3.5°C | 3.5°C | 22 | 3.7 | 10.410 h |
| December, selected | 10.1°C-1.4°C | -1.4°C | 27 | 3.6 | 9.810 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
- Lubbock in DecemberUnited States · 183 kmHigh 12.4°C · Low 0.5°C · 23 mm rain
- Lawton in DecemberUnited States · 321 kmHigh 11.3°C · Low 1.3°C · 47 mm rain
- Wichita Falls in DecemberUnited States · 338 kmHigh 12.9°C · Low 2.7°C · 48 mm rain
- Midland in DecemberUnited States · 359 kmHigh 14.5°C · Low 2.5°C · 24 mm rain
- Abilene in DecemberUnited States · 364 kmHigh 14.4°C · Low 3.7°C · 35 mm rain
- Santa Fe, United States in DecemberUnited States · 376 kmHigh 4.7°C · Low -6.1°C · 25 mm rain
- Odessa in DecemberUnited States · 379 kmHigh 14.6°C · Low 2.4°C · 24 mm rain
- Oklahoma City in DecemberUnited States · 392 kmHigh 9.7°C · Low 0.6°C · 46 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 Amarillo) is explained once on the Amarillo year overview and on the Sources, method and limits page.