Arkansas frost dates: R
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Ratcliff | Apr 4 | Nov 1 | 211 d | 8a |
| Ravenden | Apr 4 | Oct 31 | 210 d | 7b |
| Ravenden Springs | Mar 31 | Nov 1 | 215 d | 7b |
| Rector | Mar 31 | Nov 1 | 215 d | 7b |
| Redfield | Mar 21 | Nov 9 | 233 d | 8a |
| Reydell | Mar 10 | Nov 18 | 253 d | 8b |
| Reyno | Mar 27 | Nov 4 | 222 d | 7b |
| Rison | Mar 17 | Nov 14 | 242 d | 8a |
| Rivervale | Mar 23 | Nov 6 | 228 d | 8a |
| Roe | Mar 15 | Nov 11 | 241 d | 8b |
| Rogers | Apr 12 | Oct 26 | 197 d | 7a |
| Rohwer | Mar 12 | Nov 14 | 247 d | 8b |
| Roland | Apr 1 | Nov 1 | 214 d | 8a |
| Romance | Apr 4 | Oct 31 | 210 d | 8a |
| Rose Bud | Mar 31 | Nov 6 | 220 d | 8a |
| Rosie | Mar 30 | Nov 5 | 220 d | 7b |
| Rosston | Mar 29 | Nov 6 | 222 d | 8a |
| Rover | Mar 22 | Nov 11 | 234 d | 8a |
| Royal | Apr 3 | Nov 4 | 215 d | 8a |
| Rudy | Apr 9 | Oct 28 | 202 d | 7b |
| Russell | Mar 27 | Nov 8 | 226 d | 8a |
| Russellville | Mar 29 | Nov 2 | 218 d | 8a |