Climate averages 1991–2020
Oklahoma City weather
in December.
A cool, moderately wet month: the 11th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Oklahoma City: daytime highs average 9.7°C and nights cool to about 0.6°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 46 mm of rain on roughly 5 days, which makes December a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 49 min on an average December day.
The nearest other city in this atlas is Edmond (21 km away). In December its highs average 9.5°C, about as warm as Oklahoma City, with 43 mm of rain.
Among the 498 cities listed in the United States, Oklahoma City ranks joint 268th of 498 for the warmest December highs and joint 108th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Oklahoma City is 0.9°C cooler than that mean.
From December to January, average highs fall by 0.7°C to 9.0°C, and monthly rainfall falls from 46 mm to 37 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
Oklahoma City climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.0°C-0.8°C | -0.8°C | 37 | 4.6 | 10.110 h |
| February | 11.7°C1.1°C | 1.1°C | 45 | 5.5 | 10.911 h |
| March | 16.7°C5.9°C | 5.9°C | 72 | 7.6 | 11.912 h |
| April | 21.6°C10.7°C | 10.7°C | 98 | 8.6 | 13.113 h |
| May | 26.1°C16.2°C | 16.2°C | 115 | 11.0 | 14.014 h |
| June | 30.7°C21.3°C | 21.3°C | 95 | 9.6 | 14.515 h |
| July | 33.6°C23.9°C | 23.9°C | 61 | 6.8 | 14.314 h |
| August | 33.1°C23.4°C | 23.4°C | 64 | 6.7 | 13.513 h |
| September | 28.5°C18.9°C | 18.9°C | 73 | 6.9 | 12.412 h |
| October | 22.3°C12.5°C | 12.5°C | 75 | 7.2 | 11.311 h |
| November | 15.3°C5.9°C | 5.9°C | 49 | 5.6 | 10.310 h |
| December, selected | 9.7°C0.6°C | 0.6°C | 46 | 5.1 | 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
- Edmond in DecemberUnited States · 21 kmHigh 9.5°C · Low 0.6°C · 43 mm rain
- Norman in DecemberUnited States · 28 kmHigh 10.0°C · Low 1.5°C · 48 mm rain
- Lawton in DecemberUnited States · 124 kmHigh 11.3°C · Low 1.3°C · 47 mm rain
- Tulsa in DecemberUnited States · 157 kmHigh 9.3°C · Low 1.0°C · 57 mm rain
- Broken Arrow in DecemberUnited States · 169 kmHigh 9.4°C · Low 1.0°C · 64 mm rain
- Wichita Falls in DecemberUnited States · 194 kmHigh 12.9°C · Low 2.7°C · 48 mm rain
- Wichita in DecemberUnited States · 248 kmHigh 7.0°C · Low -1.9°C · 38 mm rain
- Denton in DecemberUnited States · 253 kmHigh 13.1°C · Low 4.4°C · 75 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 Oklahoma City) is explained once on the Oklahoma City year overview and on the Sources, method and limits page.