FXUS64 KEWX 122356 AFDEWX Area Forecast Discussion National Weather Service Austin/San Antonio TX 556 PM CST Fri Dec 12 2025 ...New AVIATION... .KEY MESSAGES... - Another foggy start for tomorrow morning possible - Temperature roller coaster next several days - Low to medium chances (20 to 30 percent) of rain for the Coastal Plains Saturday and for everyone Sunday, otherwise dry conditions for the next seven days. && .SHORT TERM... (Tonight through Saturday night) Issued at 115 PM CST Fri Dec 12 2025 For the rest of today expect temps to be tempered a bit because of the late dissipation of the fog this morning. Areas that had little to no fog should be a bit warmer. Expect highs in the 70s with a few locations possibly hitting 80. For tonight we look to stay mild with lows along and east of the I-35 Corridor remaining in the 60s. Several models are hinting at a trough located just to our south and west. Additionally, we could see the sea breeze kick off some streamer showers and isolated storms late tonight into early Saturday morning for areas along and east of the I-35 Corridor. Have added low end pops to account for this (15-30%) with the areas furthest east most likely to see precip. For areas west of the I-35 Corridor should see lows in the low to mid 50s with no precip. Highs tomorrow should be in the 70s with low 80s possible in areas where there's little to no fog or precip in the morning hours. Lows for Saturday night should be much colder with many seeing the low to upper 40s north of I-35 with low 50s south as a cold front starts to move across our area from north to south. we could see rain chances increase again and have added pops as NBM was just to low. With the moisture sticking around (dew points in the 60s) and light winds we could see the development of patchy to areas of dense fog form once again by tomorrow morning. Several models are suggesting 1 to as low as a 1/4 mile from basically the I-35 Corridor on east. Right now the area most likely to see the densest fog is the Coastal Plains. However it should be noted that we arent expecting as dense of fog as we saw this morning. Have added mention in the pops. && .LONG TERM... (Sunday through next Friday) Issued at 115 PM CST Fri Dec 12 2025 For the long term we should see a big cooldown from where temps were these past few days after the cold front that hangs north of our area tries to moves southward. We could see a decent shot of rain continuing into Sunday as well as the front passes through with more long range models picking up on this. Decided to increase pops to 20% through early Sunday morning. Northerly winds on the backside of the front increase and it will feel pretty chilly as CAA continues to advect into the region throughout the day. I wouldn't be surprised if our highs are a bit too warm as well. We remain in a north to northeasterly low level flow until midday Monday when we start to see the return of southeasterly flow before an upper level disturbance approaches the area by Tuesday. During this timeframe expect temperatures to go on a roller coaster trend. Expect cooler (read seasonal) temps for Monday and Tuesday before we jump to well above normal highs for Wednesday, Thursday and into Friday. This period also looks to remain dry. && .AVIATION... (00Z TAFS) Issued at 549 PM CST Fri Dec 12 2025 All terminals will be VFR with light southeasterly winds through the evening. Low clouds and fog will develop overnight. The Austin and San Antonio areas will see LIFR conditions for several hours before sunrise. DRT will be borderline MVFR/IFR. VFR conditions will return by around noon Saturday. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 58 72 48 57 / 20 20 20 20 Austin Bergstrom Intl Airport 58 74 49 59 / 20 20 30 20 New Braunfels Muni Airport 59 74 51 59 / 20 20 20 20 Burnet Muni Airport 53 71 43 52 / 20 10 10 20 Del Rio Intl Airport 52 75 52 63 / 0 0 0 20 Georgetown Muni Airport 54 73 46 55 / 20 20 20 20 Hondo Muni Airport 58 77 54 63 / 20 10 0 20 San Marcos Muni Airport 59 75 49 60 / 20 20 30 20 La Grange - Fayette Regional 61 76 53 60 / 20 30 30 20 San Antonio Intl Airport 61 76 54 61 / 20 10 20 20 Stinson Muni Airport 63 77 57 63 / 20 10 10 20 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...CJM LONG TERM....CJM AVIATION...05