FNUS54 KHGX 200630 FWFHGX Fire Weather Planning Forecast for Southeast Texas National Weather Service Houston/Galveston TX 130 AM CDT Mon Apr 20 2026 .DISCUSSION... Northeasterly winds will transition to easterly by Monday morning and southeasterly by late Monday afternoon. Expect minimum RH values in the 40-60% range on Monday. Chances for rain showers increase from west to east throughout the day on Monday with chances for thunderstorms returning Tuesday into Wednesday. The increased moisture will keep minimum RH values generally above 60% through the remainder of the work week. TXZ163-164-202115- Houston-Trinity- Including the cities of Crockett, Groveton, and Trinity 130 AM CDT Mon Apr 20 2026 Today Tonight Tue Cloud Cover Pcldy Mcldy Mcldy Precip Type None Showers Tstms Chance Precip (%) 0 40 70 Chance of Thunder (%) 0 0 50 Temp (24h trend) 74 (+3) 53 (+3) 66 RH % (24h trend) 30 (-1) 94 (+20) 70 Wind 20ft/early(mph) Lgt/Var Lgt/Var Lgt/Var Wind 20ft/late(mph) Lgt/Var Lgt/Var E 5 Max/Min Mix Hgt(m) 1460 780 Max/Min Mix Hgt(ft) 4800 2570 Transport Wnd (kts) SE 8 SE 15 Transport Wnd (m/s) SE 4 SE 8 Vent Rate (m/s-m) 5840 6240 Category Day 3 3 Sunshine Hours 5 2 Remarks... Fog Potential (First 24 Hours)...Low $$ TXZ176-195>198-202115- Brazos-Burleson-Grimes-Madison-Washington- Including the cities of Brenham, Bryan, Caldwell, College Station, Madisonville, Navasota, and Somerville 130 AM CDT Mon Apr 20 2026 Today Tonight Tue Cloud Cover Mcldy Mcldy Mcldy Precip Type Showers Tstms Tstms Chance Precip (%) 30 70 80 Chance of Thunder (%) 0 20 50 Temp (24h trend) 70 (-1) 56 (+2) 68 RH % (24h trend) 43 (+8) 97 (+27) 75 Wind 20ft/early(mph) E 5 Lgt/Var E 6 Wind 20ft/late(mph) E 5 Lgt/Var E 8 Max/Min Mix Hgt(m) 1190 680 Max/Min Mix Hgt(ft) 3910 2220 Transport Wnd (kts) E 10 SE 17 Transport Wnd (m/s) E 5 SE 9 Vent Rate (m/s-m) 5950 6120 Category Day 3 3 Sunshine Hours 2 2 Remarks... Fog Potential (First 24 Hours)...Low $$ TXZ177>179-199-200-202115- Montgomery-Northern Liberty-Polk-San Jacinto-Walker- Including the cities of Cleveland, Coldspring, Conroe, Corrigan, Dayton, Huntsville, Liberty, Livingston, Shepherd, and The Woodlands 130 AM CDT Mon Apr 20 2026 Today Tonight Tue Cloud Cover Mcldy Mcldy Mcldy Precip Type Showers Showers Tstms Chance Precip (%) 20 50 80 Chance of Thunder (%) 0 0 50 Temp (24h trend) 74 (+3) 55 (+2) 70 RH % (24h trend) 33 (-2) 92 (+21) 69 Wind 20ft/early(mph) Lgt/Var Lgt/Var Lgt/Var Wind 20ft/late(mph) Lgt/Var Lgt/Var E 6 Max/Min Mix Hgt(m) 1450 740 Max/Min Mix Hgt(ft) 4750 2410 Transport Wnd (kts) E 8 E 15 Transport Wnd (m/s) E 4 E 8 Vent Rate (m/s-m) 5800 5920 Category Day 3 3 Sunshine Hours 3 2 Remarks... Fog Potential (First 24 Hours)...Low $$ TXZ212-213-227-237-238-202115- Fort Bend-Inland Brazoria-Inland Galveston-Inland Harris-Waller- Including the cities of Alvin, Angleton, Brookshire, First Colony, Friendswood, Hempstead, Houston, League City, Mission Bend, Missouri City, Pearland, Pecan Grove, Prairie View, Rosenberg, Sugar Land, and Waller 130 AM CDT Mon Apr 20 2026 Today Tonight Tue Cloud Cover Mcldy Mcldy Mcldy Precip Type Showers Tstms Tstms Chance Precip (%) 40 60 80 Chance of Thunder (%) 0 20 50 Temp (24h trend) 71 (+3) 59 (+1) 73 RH % (24h trend) 52 (+7) 95 (+21) 71 Wind 20ft/early(mph) E 8 Lgt/Var E 6 Wind 20ft/late(mph) E 8 Lgt/Var E 10 Max/Min Mix Hgt(m) 1100 860 Max/Min Mix Hgt(ft) 3600 2830 Transport Wnd (kts) E 12 E 14 Transport Wnd (m/s) E 6 E 7 Vent Rate (m/s-m) 6600 6020 Category Day 3 3 Sunshine Hours 2 2 Remarks... Fog Potential (First 24 Hours)...Low $$ TXZ210-211-226-235-236-202115- Austin-Colorado-Inland Jackson-Inland Matagorda-Wharton- Including the cities of Bay City, Bellville, Columbus, Eagle Lake, Edna, El Campo, Ganado, Sealy, Weimar, and Wharton 130 AM CDT Mon Apr 20 2026 Today Tonight Tue Cloud Cover Mcldy Mcldy Mcldy Precip Type Showers Tstms Tstms Chance Precip (%) 60 60 70 Chance of Thunder (%) 0 20 50 Temp (24h trend) 69 (+2) 59 (+1) 76 RH % (24h trend) 62 (+14) 97 (+19) 71 Wind 20ft/early(mph) NE 8 E 5 E 7 Wind 20ft/late(mph) E 9 Lgt/Var E 10 Max/Min Mix Hgt(m) 1030 980 Max/Min Mix Hgt(ft) 3390 3200 Transport Wnd (kts) E 13 E 16 Transport Wnd (m/s) E 7 E 8 Vent Rate (m/s-m) 7210 7840 Category Day 3 3 Sunshine Hours 1 2 Remarks... Fog Potential (First 24 Hours)...Low $$ TXZ214-300-313-338-202115- Chambers-Coastal Galveston-Coastal Harris-Southern Liberty- Including the cities of Anahuac, Baytown, Devers, Dickinson, La Marque, Mont Belvieu, Old River-Winfree, Pasadena, Stowell, Texas City, and Winnie 130 AM CDT Mon Apr 20 2026 Today Tonight Tue Cloud Cover Mcldy Mcldy Mcldy Precip Type Showers Showers Tstms Chance Precip (%) 20 40 70 Chance of Thunder (%) 0 0 50 Temp (24h trend) 74 (+6) 59 (+2) 74 RH % (24h trend) 47 (+1) 87 (+14) 65 Wind 20ft/early(mph) E 9 E 6 E 7 Wind 20ft/late(mph) E 9 E 5 E 10 Max/Min Mix Hgt(m) 1190 1050 Max/Min Mix Hgt(ft) 3910 3440 Transport Wnd (kts) E 12 E 13 Transport Wnd (m/s) E 6 E 7 Vent Rate (m/s-m) 7140 7350 Category Day 3 3 Sunshine Hours 3 2 Remarks... Fog Potential (First 24 Hours)...Low $$ TXZ335>337-202115- Coastal Brazoria-Coastal Jackson-Coastal Matagorda- Including the cities of Clute, Freeport, Lake Jackson, and Palacios 130 AM CDT Mon Apr 20 2026 Today Tonight Tue Cloud Cover Mcldy Mcldy Mcldy Precip Type Showers Tstms Tstms Chance Precip (%) 50 50 70 Chance of Thunder (%) 0 20 50 Temp (24h trend) 72 (+5) 63 (+2) 76 RH % (24h trend) 60 (+4) 93 (+11) 70 Wind 20ft/early(mph) E 11 E 9 E 10 Wind 20ft/late(mph) E 13 E 8 SE 13 Max/Min Mix Hgt(m) 1130 1020 Max/Min Mix Hgt(ft) 3700 3330 Transport Wnd (kts) E 15 SE 16 Transport Wnd (m/s) E 8 SE 8 Vent Rate (m/s-m) 9040 8160 Category Day 4 4 Sunshine Hours 2 2 Remarks... Fog Potential (First 24 Hours)...Low $$ TXZ436>439-202115- Bolivar Peninsula-Brazoria Islands-Galveston Island- Matagorda Islands- Including the cities of Galveston and Surfside Beach 130 AM CDT Mon Apr 20 2026 Today Tonight Tue Cloud Cover Mcldy Mcldy Mcldy Precip Type Showers Tstms Tstms Chance Precip (%) 40 50 70 Chance of Thunder (%) 0 20 50 Temp (24h trend) 73 (+5) 67 (+1) 76 RH % (24h trend) 56 (0) 85 (+15) 68 Wind 20ft/early(mph) E 15 E 13 SE 13 Wind 20ft/late(mph) E 14 SE 12 SE 14 Max/Min Mix Hgt(m) 1210 1030 Max/Min Mix Hgt(ft) 3960 3360 Transport Wnd (kts) E 16 SE 18 Transport Wnd (m/s) E 8 SE 9 Vent Rate (m/s-m) 9680 9270 Category Day 4 4 Sunshine Hours 2 2 Remarks... Fog Potential (First 24 Hours)...Low $$ .FORECAST FOR DAYS 3 THROUGH 7... .WEDNESDAY...Mostly cloudy. Showers likely and a chance of thunderstorms. Lows in the mid 60s. Highs in the upper 70s. East winds around 5 mph. .THURSDAY...Mostly cloudy. Lows in the upper 60s. Highs around 80. Southeast winds 5 to 10 mph. .FRIDAY...Mostly cloudy. Lows in the lower 70s. Highs in the lower 80s. South winds around 10 mph. .SATURDAY...Mostly cloudy. Lows in the lower 70s. Highs in the lower 80s. South winds 5 to 10 mph. .SUNDAY...Mostly cloudy. Lows in the lower 70s. Highs in the lower 80s. Southeast winds 5 to 10 mph. $$