Weather in Oklahoma City in December

Shoulder season. December sits in between. You will get good days and you will lose some. Highs sit at 10.1 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

December ranks 8 of 12 in Oklahoma City: past the worst of the year but short of April, which is the month to book if the dates are open.

Rain falls on only 5 days, so an itinerary with no wet-weather fallback is a reasonable risk. Layers, and a genuinely waterproof outer — at 10.1 °C the difference between a good day and a miserable one is entirely down to what you are wearing.

What the averages hide

Averages flatten a month, and this one hides a few things: 19 nights fall below freezing. Across the twenty years measured, the hottest December day reached 25.4 °C and the coldest night fell to -13.3 °C, and the wettest single day dropped 53 mm — roughly 143% of the month's rain in one day.

December is moderately variable: 5 mm in the driest year against 90 mm in the wettest, around an average of 37 mm. Roughly two Decembers in three land near that average, and the third does something else entirely.

Wind is light at 11.9 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 71%.

How December sits in the year

Temperatures hold steady either side: 16.5 °C in November, 10.1 here, 9.3 in January. Nothing about the timing within the month matters much.

Daylight in December

December sits at the dark end of Oklahoma City's year — 9.8 hours of daylight against 14.5 at midsummer, holding steady all month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

An inland climate

With no coast nearby, the year swings a fair way — 37 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

December in Oklahoma City versus nearby

If Oklahoma City is one option among several, the nearby comparison is worth making. Tulsa is the weaker option in December — within a degree on temperature, 1 day more rain. Wichita is the weaker option in December — 2.5 °C cooler, 1 day less rain.

So: December is a compromise. April is 26 points better and is what Oklahoma City is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Oklahoma City

See all twelve months in Oklahoma City, or where else to go in December.