Newcastle, Oklahoma 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

634
FXUS64 KOUN 252305
AFDOUN

Area Forecast Discussion
National Weather Service Norman OK
605 PM CDT Sat Jul 25 2026

...New AVIATION...

.KEY MESSAGES...
Updated at 603 PM CDT Sat Jul 25 2026

- Excessive heat and mostly dry conditions through end of the
  week.

&&

.NEAR TERM...
(Rest of today and tonight)
Issued at 205 PM CDT Sat Jul 25 2026

Dangerously hot/humid conditions are present at this hour across the
area with air temperature readings near 100 degrees (western half
of Oklahoma); heat index values near/above 110 degrees are widespread
across northern Oklahoma with 114 deg observed in Alva. Unfortunately,
the lightest winds are co-located with the highest heat index values
and are resulting in extreme wet-globe temperature risk over northern
Oklahoma. Elsewhere, breezy south/southwest are providing at least
some relief.

There is a very low chance of a pop-up thunderstorm late afternoon
over northwest Oklahoma, if convective temperatures are breached
and subsidence overcome.

Temperatures will be slow to fall below the century mark (by 8 PM
or so over western OK. Overnight low temperatures will be just under
80 deg and offer little relief for those without air conditioning.

Thompson

&&

.SHORT TERM...
(Sunday through Monday night)
Issued at 205 PM CDT Sat Jul 25 2026

Dangerous heat and dry conditions continue through at least Monday..

The center of the 598dam ridge is modeled to remain nearly stationary
with south/southwesterly winds prevailing under sunny skies. Continued
daytime mixing will lead to a downward trend in dewpoint temperatures
Sunday and Monday. Drybulb temperatures will thus increase over the
next two days. High temperatures of 100 to 105 will be common and the
highest values of 110 deg possible in the vicinity of Woods, Alfalfa,
Major Counties. A Heat Advisory has been issued for much of the FA
for tomorrow. Overnight low temperatures will be similar to those
expected tonight - mid- to upper-70s.

Thompson

&&

.LONG TERM...
(Tuesday through Friday)
Issued at 141 AM CDT Sat Jul 25 2026

The remainder of next week will continue to feature very hot
temperatures and the potential for daily Heat Advisories. The upper
ridge will center more over New Mexico, which will bring back north
northwesterly flow through the week. Afternoon convection along the
higher terrain in Colorado could be driven southeast by any embedded
shortwaves in the northwest flow aloft into northern Oklahoma during
the late evening and overnight hours, but currently the chances
remain low. A weak cold front late in the week may bring some relief
to the triple digit heat by next weekend.

&&

.AVIATION...
(00Z TAFS)
Issued at 603 PM CDT Sat Jul 25 2026

Light southerly winds and VFR conditions will prevail.

Day

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  78 101  78 102 /   0   0   0   0
Hobart OK         78 103  76 104 /   0   0   0   0
Wichita Falls TX  78 102  77 102 /   0   0   0   0
Gage OK           77 104  76 106 /  10   0   0   0
Ponca City OK     78 101  79 104 /   0   0   0   0
Durant OK         79 100  78 100 /   0   0   0   0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...Heat Advisory until 9 PM CDT this evening for OKZ004-009-010-
     014>016-021>023-027>048-050>052.

     Heat Advisory from 11 AM to 9 PM CDT Sunday for OKZ004>048-
     050>052.

     Extreme Heat Warning until 9 PM CDT this evening for OKZ005>008-
     011>013-017>020-024>026.

TX...Heat Advisory until 9 PM CDT this evening for TXZ083>090.

     Heat Advisory from 11 AM to 9 PM CDT Sunday for TXZ083-085-086-
     090.

&&

$$

NEAR TERM...01
SHORT TERM...01
LONG TERM....23
AVIATION...14