Kentucky frost dates: R
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Raccoon | Apr 8 | Nov 2 | 208 d | 7a |
| Radcliff | Apr 16 | Oct 25 | 192 d | 7a |
| Ransom | Apr 8 | Nov 2 | 208 d | 7a |
| Raven | Apr 23 | Oct 23 | 183 d | 7a |
| Ravenna | Apr 20 | Oct 19 | 182 d | 7a |
| Raywick | Apr 22 | Oct 20 | 181 d | 7a |
| Redfox | Apr 18 | Oct 28 | 193 d | 7a |
| Reed | Apr 3 | Nov 2 | 213 d | 7a |
| Regina | Apr 22 | Oct 23 | 184 d | 7a |
| Renfro Valley | Apr 18 | Oct 24 | 189 d | 7a |
| Revelo | Apr 24 | Oct 18 | 177 d | 7a |
| Reynolds Station | Apr 2 | Nov 7 | 219 d | 7a |
| Rhodelia | Apr 19 | Oct 24 | 188 d | 7a |
| Ricetown | Apr 24 | Oct 19 | 178 d | 6b |
| Richmond | Apr 15 | Oct 22 | 190 d | 7a |
| Rineyville | Apr 16 | Oct 25 | 192 d | 7a |
| River | Apr 19 | Oct 25 | 189 d | 7a |
| Roark | Apr 15 | Oct 30 | 198 d | 7a |
| Robards | Apr 9 | Oct 26 | 200 d | 7a |
| Robinson Creek | Apr 22 | Oct 23 | 184 d | 7a |
| Rochester | Apr 15 | Oct 20 | 188 d | 7a |
| Rockfield | Apr 5 | Oct 31 | 209 d | 7a |
| Rockholds | Apr 21 | Oct 22 | 184 d | 7a |
| Rockhouse | Apr 22 | Oct 23 | 184 d | 7a |
| Rockport | Apr 10 | Oct 22 | 195 d | 7a |
| Rocky Hill | Apr 9 | Oct 30 | 204 d | 7a |
| Rogers | Apr 12 | Oct 25 | 196 d | 7a |
| Rosine | Apr 10 | Oct 22 | 195 d | 7a |
| Roundhill | Apr 22 | Oct 22 | 183 d | 7a |
| Rousseau | Apr 6 | Nov 1 | 209 d | 7a |
| Rowdy | Apr 19 | Oct 24 | 188 d | 7a |
| Roxana | Apr 18 | Oct 28 | 193 d | 7a |
| Royalton | Apr 25 | Oct 21 | 179 d | 7a |
| Rumsey | Apr 2 | Nov 1 | 213 d | 7a |
| Rush | Apr 27 | Oct 17 | 173 d | 6b |
| Russell | Apr 22 | Oct 23 | 184 d | 7a |
| Russell Springs | Apr 18 | Oct 24 | 189 d | 7a |
| Russellville | Apr 9 | Oct 28 | 202 d | 7a |