FRESNO, Calif. (AP) — As an unusual cold spell gripped parts of the West for a fifth day, some California citrus growers reported damage to crops and an agriculture official said national prices on lettuce have started to rise because of lost produce in Arizona.

The extreme chill in the West comes as the Eastern U.S., from Atlanta to New York City, is seeing spring-like weather.

In California's San Joaquin Valley, where farmers are fighting to protect about $1.5 billion worth of citrus fruit on their trees, Sunday temperatures dropped to 25 degrees in some areas and stayed low longer than previous nights.