Nolte said Yuma farmers haven’t seen much damage so far with other crops such as spinach, cauliflower and broccoli.
Metropolitan Phoenix marked one of its coolest stretches since 1988 and Sunday morning’s low of 7 degrees in Douglas, Ariz., broke a record for January in the Mexican border town.
Farther north, a school district on the Navajo Nation cancelled all classes Tuesday because of freezing temperatures.
Temperatures in Window Rock, Ariz., were expected to be well below freezing Tuesday with a high of 21 degrees and a low of minus 5 degrees. The Window Rock School District posted the cancellation notice on its website Monday, saying heating the schools has been a problem.
In Nevada, the temperature in Ely plummeted to 24 below zero early Monday and wind chills were expected to drop to near 40 below into Tuesday.
And in northern New Mexico, parts of Interstate 25 and some other highways were snow packed and icy Monday, and officials warned travelers that additional light snow could lead to hazardous driving conditions when coupled with the freezing temperatures.
Associated Press writers Walter Berry in Phoenix and Jeff Wilson and Raquel Dillon in Los Angeles contributed to this report.