textproduct: Norman

KEY MESSAGES

Updated at 538 AM CST Sat Dec 13 2025

- Temperatures plunge into the 30s on Sunday; otherwise near or above-normal conditions for much of the next week.

- No chances for precipitation through the next seven days.

NEAR TERM

(Through Saturday) Issued at 1220 AM CST Sat Dec 13 2025

While seasonable-to-warm conditions are expected today, a stronger frontal passage remains poised to sweep across the area this evening/tonight. In the meantime, widely scattered patches of high clouds and a light northerly breeze are fostering a cold morning, with daybreak temperatures expected to hover around the freezing mark across much of the forecast area.

The leading edge of a much colder airmass resides near the Nebraska/Kansas border early this morning. This colder airmass will accelerate southward through the day, as a 1040-mb surface high dives into the Northern Plains. Saturday afternoon temperatures will range from the upper-40s north, where stronger cold advection is forecast, to mid-60s across western-north Texas amidst a weak downsloping regime in advance of the airmass change.

Ungar

SHORT TERM

(Saturday night through Monday night) Issued at 1220 AM CST Sat Dec 13 2025

The brunt of the colder airmass will settle across the region by Saturday night and linger into Sunday. Gusty north-northeasterly winds (occasional gusts up to 40 mph) are expected from near sunset into early Sunday morning across the southern one-half of Oklahoma and north Texas, as a strong pressure gradient develops in response to the approaching surface high.

If your Sunday plans take you outdoors, you will want to make sure to bundle up! A notable northerly wind will contribute to single- digit wind chills across much of Oklahoma around daybreak. Conditions into the afternoon/early evening are not expected to feel markedly better, with some locations across central and northern Oklahoma likely struggling to warm above the freezing mark (despite clearing/clear skies and light winds).

The good news is that our blast of much colder air will be confined to Sunday, with a warming trend beginning by Monday. The late weekend front/system will continue accelerating to our south and east, allowing for greater influence from an upstream upper ridge. A modest downsloped airmass will promote locally warmest conditions (low-60s) near the 100th meridian on Monday afternoon.

Ungar

LONG TERM

(Tuesday through Friday) Issued at 1220 AM CST Sat Dec 13 2025

The main weather message into next week remains above-normal temperatures and dry surface weather. A weak upper wave will move across portions of Texas on Tuesday, offering another dry frontal passage. The Pacific origins of this system will limit concern for additional cold/cooler in its wake. In fact, temperatures look to continue warming into the midweek, with 70s possible across southern zones by Wednesday. We will want to keep tabs on possible fire weather concern by this time, with potential for overlapping areas of <20% afternoon relative humidity and gusty southwest winds.

The passage of a stronger system/front is becoming more evident as we head towards the end of the week, though disagreement exists on the degree of resulting sensible weather impact for our area.

Ungar

AVIATION

(12Z TAFS) Issued at 538 AM CST Sat Dec 13 2025

Overcast stratus increasing across southeast Oklahoma with ceilings between 009-012 ft will lower terminal KDUA into an MVFR to high end IFR category in the next hour although ceiling may rise a bit by 15Z to an MVFR category at least through 02Z. Another area of stratus in northcentral Oklahoma may reduce terminals KPNC & KSWO to a MVFR category within the next four hours and may persist through 18Z before scattering although may return again by 20Z to an MVFR category. All terminals in central Oklahoma should remain in a VFR category through the entire forecast period with our remaining western terminals at least through 06Z. Surface winds will remain light & northerly to variable this morning but north winds will start increasing this afternoon between 18-00Z when a strong cold front starts pushing through. Wind speeds initially behind the front will be 10-15 kts but will see gusts increase 15-20 kts by 21-22Z. North winds will remain breezy overnight after 00Z across all terminals around 15-20 kts with gusts between 20-30 kts.

PRELIMINARY POINT TEMPS/POPS

Oklahoma City OK 53 21 33 23 / 0 0 0 0 Hobart OK 58 21 37 23 / 0 0 0 0 Wichita Falls TX 61 26 40 24 / 0 0 0 0 Gage OK 56 19 38 25 / 0 0 0 0 Ponca City OK 46 18 32 20 / 0 0 0 0 Durant OK 59 27 40 25 / 0 0 0 0

OUN WATCHES/WARNINGS/ADVISORIES

OK...None. TX...None.