FXUS64 KEWX 201828 AFDEWX Area Forecast Discussion National Weather Service Austin/San Antonio TX 128 PM CDT Fri Mar 20 2026 ...New SHORT TERM, LONG TERM, AVIATION, FIRE WEATHER... .KEY MESSAGES... - Well above average high temperatures through the middle of next week with record highs possible through Sunday. - Elevated fire weather conditions possible most days due to low minimum humidities. && .SHORT TERM... (Tonight through Saturday night) Issued at 126 PM CDT Fri Mar 20 2026 The strong upper-level high over the Desert Southwest will nudge closer to our area and elongate some this weekend. Warm and dry low- level flow continues, supporting mild nights and hot afternoons at daily record levels. A bulge of warmer lower tropospheric air extending into South-Central Texas will amplify afternoon warmth tomorrow with highs in the 90s throughout South-Central Texas. There is medium to high confidence in our primary climate sites setting daily record highs Saturday, especially at Del Rio. && .LONG TERM... (Sunday through next Friday) Issued at 126 PM CDT Fri Mar 20 2026 Little substantive change in weather is expected in the long term forecast, with our early-spring heat wave continuing. The upper- level high does flatten out some Sunday and Monday, but remains draped across Texas. A weak front nears our area Monday but loses steam nearby. The combination of this front and some backing of surface flow to the southeast should cool highs slightly the first half of next week, but only into the upper 80s to lower 90s through Tuesday. Over the second half of next week, ridging restrengthens over the southwestern US. This raises highs again back into the low to mid 90s, potentially back to daily record territory, and continues to suppress rain chances. && .AVIATION... (18Z TAFS) Issued at 126 PM CDT Fri Mar 20 2026 VFR flight conditions prevail through the period. Similar to this morning, a concentrated region of low clouds and patchy fog could develop across the Coastal Plains from late overnight into the mid- morning hours on Saturday. Added a TEMPO for a few low clouds for the I-35 TAF sites (KAUS, KSAT, and KSSF), in case these low clouds may approach near or after sunrise. Otherwise, expect mostly to completely clear skies. Light to moderate south winds remain with peak speeds around the 10 to 15 kt range with gusts up to around 20 to 22 kt. && .FIRE WEATHER... Issued at 126 PM CDT Fri Mar 20 2026 Dry air will remain over South-Central Texas through at least Monday. As temperatures soar well above seasonable levels, relative humidity will drop. Minimum RH today through Sunday will fall below 30% over most of the area and below 20% over areas west of I-35/I- 37. Winds during the time of minimum RH will generally be 10 mph or less and this may lead to elevated fire weather conditions. Slightly breezier conditions Sunday may support near-critical fire weather conditions. There will be some improvement in conditions into the middle of next week, but RH in the teens and 20s will be common. Winds should remain light. && .CLIMATE... Issued at 1231 PM CDT Wed Mar 18 2026 Record | Friday | Saturday | Sunday | (03/20) (03/21) (03/22) AUS | 92 (1976) | 90 (1952) | 98 (1971) | ATT | 91 (1976) | 91 (1952/1917) | 96 (1971) | SAT | 93 (1976) | 94 (1904) | 96 (1971) | DRT | 96 (1932) | 93 (1916/1907) | 96 (1995) | && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 61 94 62 95 / 0 0 0 0 Austin Bergstrom Intl Airport 58 94 60 94 / 0 0 0 0 New Braunfels Muni Airport 56 92 57 93 / 0 0 0 0 Burnet Muni Airport 59 95 62 94 / 0 0 0 0 Del Rio Intl Airport 59 100 61 99 / 0 0 0 0 Georgetown Muni Airport 60 95 62 95 / 0 0 0 0 Hondo Muni Airport 53 95 54 95 / 0 0 0 0 San Marcos Muni Airport 57 93 59 94 / 0 0 0 0 La Grange - Fayette Regional 59 91 60 91 / 0 0 0 0 San Antonio Intl Airport 58 93 60 94 / 0 0 0 0 Stinson Muni Airport 58 94 59 95 / 0 0 0 0 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...Tran LONG TERM....Tran AVIATION...62