Texas frost dates: R
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Rainbow | Mar 28 | Nov 7 | 224 d | 8a |
| Ralls | Apr 5 | Nov 5 | 214 d | 7b |
| Randolph | Mar 16 | Nov 13 | 242 d | 8a |
| Ranger | Mar 30 | Nov 4 | 219 d | 8a |
| Rankin | Mar 12 | Nov 16 | 249 d | 8b |
| Ransom Canyon | Mar 24 | Nov 11 | 232 d | 8a |
| Ratcliff | Mar 2 | Nov 26 | 269 d | 9a |
| Ravenna | Mar 16 | Nov 13 | 242 d | 8a |
| Raymondville | Jan 21 | Dec 26 | 339 d | 10a |
| Raywood | Feb 21 | Dec 1 | 283 d | 9a |
| Reagan | Mar 21 | Nov 9 | 233 d | 9a |
| Realitos | Feb 4 | Dec 12 | 311 d | 9b |
| Red Oak | Mar 16 | Nov 16 | 245 d | 8b |
| Red Rock | Mar 14 | Nov 19 | 250 d | 9a |
| Redford | Mar 21 | Nov 11 | 235 d | 8b |
| Redwater | Mar 4 | Nov 21 | 262 d | 8b |
| Refugio | Feb 27 | Dec 2 | 278 d | 9b |
| Reklaw | Mar 7 | Nov 25 | 263 d | 8b |
| Rhome | Mar 12 | Nov 17 | 250 d | 8a |
| Rice | Mar 14 | Nov 16 | 247 d | 8b |
| Richards | Mar 2 | Nov 26 | 269 d | 9a |
| Richardson | Mar 2 | Nov 29 | 272 d | 8b |
| Richland | Mar 7 | Nov 23 | 261 d | 8b |
| Richland Springs | Mar 16 | Nov 13 | 242 d | 8b |
| Richmond | Feb 9 | Dec 13 | 307 d | 9b |
| Riesel | Mar 21 | Nov 9 | 233 d | 8b |
| Ringgold | Mar 24 | Nov 8 | 229 d | 8a |
| Rio Frio | Mar 12 | Nov 14 | 247 d | 8b |
| Rio Grande City | Jan 31 | Dec 17 | 320 d | 9b |
| Rio Hondo | Jan 8 | Dec 29 | 355 d | 10a |
| Rio Medina | Feb 18 | Dec 9 | 294 d | 9a |
| Rio Vista | Mar 17 | Nov 12 | 240 d | 8b |
| Rising Star | Mar 26 | Nov 10 | 229 d | 8a |
| Riverside | Mar 1 | Nov 28 | 272 d | 9a |
| Riviera | Feb 17 | Dec 8 | 294 d | 9b |
| Roanoke | Mar 12 | Nov 17 | 250 d | 8b |
| Roans Prairie | Mar 16 | Nov 11 | 240 d | 9a |
| Roaring Springs | Apr 5 | Nov 4 | 213 d | 7b |
| Robert Lee | Mar 26 | Nov 7 | 226 d | 8a |
| Robstown | Jan 26 | Dec 24 | 332 d | 9b |
| Roby | Mar 17 | Nov 15 | 243 d | 8a |
| Rochelle | Mar 14 | Nov 15 | 246 d | 8b |
| Rochester | Mar 28 | Nov 7 | 224 d | 8a |
| Rock Island | Mar 9 | Nov 20 | 256 d | 9a |
| Rockdale | Mar 6 | Nov 23 | 262 d | 9a |
| Rockport | Jan 31 | Dec 25 | 328 d | 9b |
| Rocksprings | Mar 8 | Nov 25 | 262 d | 8b |
| Rockwall | Mar 10 | Nov 19 | 254 d | 8b |
| Rockwood | Mar 18 | Nov 12 | 239 d | 8b |
| Rogers | Mar 6 | Nov 23 | 262 d | 9a |
| Roma | Jan 31 | Dec 17 | 320 d | 9b |
| Romayor | Mar 7 | Nov 20 | 258 d | 9a |
| Roosevelt | Apr 8 | Oct 28 | 203 d | 8a |
| Ropesville | Apr 9 | Nov 1 | 206 d | 7b |
| Rosanky | Mar 12 | Nov 19 | 252 d | 9a |
| Roscoe | Mar 30 | Nov 8 | 223 d | 8a |
| Rosebud | Mar 21 | Nov 9 | 233 d | 9a |
| Rosenberg | Feb 9 | Dec 13 | 307 d | 9a |
| Rosharon | Feb 15 | Dec 6 | 294 d | 9b |
| Ross | Mar 15 | Nov 15 | 245 d | 8b |
| Rosser | Mar 16 | Nov 14 | 243 d | 8b |
| Rosston | Apr 1 | Nov 4 | 217 d | 8a |
| Rotan | Mar 17 | Nov 15 | 243 d | 8a |
| Round Mountain | Mar 22 | Nov 9 | 232 d | 8b |
| Round Rock | Mar 6 | Nov 24 | 263 d | 9a |
| Round Top | Mar 4 | Nov 25 | 266 d | 9a |
| Rowena | Mar 22 | Nov 10 | 233 d | 8a |
| Rowlett | Mar 10 | Nov 19 | 254 d | 8b |
| Roxton | Mar 14 | Nov 16 | 247 d | 8b |
| Royse City | Mar 10 | Nov 19 | 254 d | 8b |
| Rule | Mar 28 | Nov 7 | 224 d | 8a |
| Runge | Feb 16 | Dec 9 | 296 d | 9a |
| Rusk | Mar 7 | Nov 25 | 263 d | 8b |
| Rye | Mar 6 | Nov 21 | 260 d | 9a |