| Answer | Crossword Clue |
|---|---|
| NINETY | Summer temperature. |
| isotheral | a line connecting points of the same average summer temperature also ISOTHERE |
| isotherals | ISOTHERAL, a line connecting points of the same average summer temperature also ISOTHERE |
| isotheres | A line on a map connecting points having the same average temperature in summer |
| isothere | line on a weather map or chart connecting points that have the same mean summer temperature |
| isotheral | line on a weather map or chart connecting points that have the same mean summer temperature |
