Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX
Issued by NWS Austin/San Antonio, TX
135 FXUS64 KEWX 061120 AFDEWX Area Forecast Discussion National Weather Service Austin/San Antonio TX 520 AM CST Sat Dec 6 2025 ...New AVIATION... .KEY MESSAGES... - Generally rain free with greater sunshine this week with dry frontal passages on Sunday and sometime into early Friday next week - Warmer temperatures ahead of these fronts, cooler in the wake of the fronts, especially at night - Patchy to areas of fog in the coastal plains on Sunday morning && .SHORT TERM... (Today through Sunday) Issued at 1203 AM CST Sat Dec 6 2025 Mostly cloudy skies will still start off early this morning for the majority of the region but will clear out quickly from the northwest to southeast by midday or early afternoon as a more west-northwest flow develops aloft in the wake of a minor upper level disturbance. A light southwesterly flow develops at the surface across much of the region as well. With skies clearing and the southwesterly surface flow in place, expect a much warmer afternoon across the region with highs in the low to mid 70s area wide. A milder night should also be expected entering Sunday morning with lows in the upper 40s to mid 50s. The coastal plains could see patchy to areas of fog develop for Sunday morning where the higher dew points are to reside and light winds thanks to the relaxed pressure gradient ahead of a nearing cold front. The cold front advances across the region through the day on Sunday. Temperatures across the northern half of the region look to mostly top out in the mid to upper 60s with the front moving through by around midday. Farther to the south where the front will take longer to push through, expect for highs to climb into the 70s to near 80 degrees. Moderate to breezy north winds develop behind the front with gusts up into the 25 mph range. && .LONG TERM... (Sunday night through Friday) Issued at 1203 AM CST Sat Dec 6 2025 A dry and slightly cooler post-frontal airmass will be in place at least through Tuesday morning. Advective cooling into Monday with north winds followed by radiational cooling into Tuesday morning under clear skies and light winds will make the temperatures most noteworthy around sunrise each morning, where some rural locations may near the freezing mark. However, it looks to be quite limited and for mostly locations that have already experienced a light freeze this season. Elsewhere, mid 30s to low 40s trend common. Monday trends as the coolest day with highs ranging from the upper 50s for the east into the mid to upper 60s along the Rio Grande. Tuesday will see highs more solidly within the 60s to near 70 degrees. A southerly low-level flow returns and will slightly uptick through midweek. This will yield to a warming trend with afternoon highs climbing into the mid to upper 70s and low 80s. Overnight lows become milder as well into the 40s to near 50 degrees. Skies will trend mostly sunny each afternoon while some low cloud cover could enter the picture east of I-35 during the morning hours. The next front then approaches into or sometime around Friday morning. It looks to remain rain free like the front on Sunday and brings a slightly cooler airmass to the area into the start of the next weekend. && .AVIATION... (12Z TAFS) Issued at 512 AM CST Sat Dec 6 2025 VFR flight conditions are forecast for the period. Mid and high level clouds will erode from northwest to southeast by mid to late morning. Light winds prevail with directions becoming more steady and uniformly out of the west-southwest later today, especially for areas east of the Rio Grande. Pockets of low clouds and some fog could develop east of I-35 into Sunday morning ahead of a cold front. The cold front pushes across the I-35 corridor by mid to late Sunday morning. Gusty northerly winds develop behind the front late in the 30 hour TAF cycle at KAUS and KSAT. && .FIRE WEATHER... Issued at 1203 AM CST Sat Dec 6 2025 Much warmer and rain free conditions prevail today as skies are expected to clear out from northwest to southeast. Winds will be light today from the west-southwest while minimum humidity will range from around 25 percent in the Hill Country and Southern Edwards Plateau to near 50 percent in the coastal plains. A cold front advances across the region on Sunday bringing gusty north winds through the afternoon into the early evening. The winds combined with minimum humidity below 30 percent along and to the west of highway 281 could promote locally elevated fire weather concerns. However, the fuel dryness levels across the region are above normal moisture and this helps alleviate the fire weather concerns after the cool, gray, and damp past week. Southerly flow returns into and through midweek with warmer temperatures with humidity levels ranging from 20 to 50 percent. The next front then looks to approach sometime into early Friday. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 74 53 69 39 / 0 0 0 0 Austin Bergstrom Intl Airport 74 51 70 37 / 0 0 0 0 New Braunfels Muni Airport 74 52 73 39 / 0 0 0 0 Burnet Muni Airport 72 48 65 35 / 0 0 0 0 Del Rio Intl Airport 74 50 75 43 / 0 0 0 0 Georgetown Muni Airport 74 50 67 36 / 0 0 0 0 Hondo Muni Airport 74 49 76 37 / 0 0 0 0 San Marcos Muni Airport 74 51 71 38 / 0 0 0 0 La Grange - Fayette Regional 72 54 72 39 / 0 0 0 0 San Antonio Intl Airport 74 53 74 41 / 0 0 0 0 Stinson Muni Airport 74 53 76 41 / 0 0 0 0 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...62 LONG TERM....62 AVIATION...62