Update: Freeze warning for San Luis Valley and Alamosa anticipated to expire at 9 a.m.

Published Oct 5, 2025

The warning had been issued for Del Norte Vicinity/Northern San Luis Valley below 8,500 ft, Alamosa Vicinity/Central San Luis Valley below 8,500 ft and Southern San Luis Valley.

“Temperatures will steadily increase this morning to above freezing levels. Given this, will allow for the Freezing Warning to expire at the top of the hour,” according to the National Weather Service.

What to do if there is a freeze watch or warning

Freeze warnings are issued from May to October (but can be extended if necessary), when low temperatures are expected to be 29-32 degrees. If there is a potential for temperatures to fall into these thresholds, a freeze watch may be issued a few days ahead of time.

According to the NWS, if a freeze warning or watch is issued for your area, there is little you can do to protect plants. If you can move your sensitive plants inside, do so because the freeze will likely kill them, depending on the severity of conditions.

Source: The National Weather Service