Weather
San Luis Valley, CO Freeze Watch Oct. 14-15: Lows Near 27°
Pueblo, CO – Residents across Colorado's San Luis Valley are being urged to protect sensitive outdoor plants as temperatures could plunge to 27 degrees late Wednesday, October 14, into Thursday mornin
By Owen Prescott · 2026-10-13T08:47:56.460Z
Pueblo, CO – Residents across Colorado's San Luis Valley are being urged to protect sensitive outdoor plants as temperatures could plunge to 27 degrees late Wednesday, October 14, into Thursday morning, October 15, bringing the possibility of a killing freeze that could end the local growing season.
According to the National Weather Service in Pueblo, a Freeze Watch is in effect for the San Luis Valley as colder air moves into southern Colorado with an approaching Pacific weather system.
The watch covers late Wednesday night through Thursday morning, when subfreezing temperatures are expected to become possible across the valley.
Temperatures Could Drop to 27 Degrees
Forecasters warn that temperatures could fall as low as 27 degrees in portions of the San Luis Valley, creating conditions capable of damaging or killing sensitive vegetation.
Communities including Alamosa, Monte Vista and surrounding valley areas could experience freezing conditions as colder air settles into the region overnight.
A killing freeze could effectively bring the growing season to an end, particularly for gardens, flowers and agricultural vegetation that remain exposed.
The National Weather Service is encouraging residents to take protective measures before temperatures begin falling Wednesday night.
Cold Pacific System Brings Freeze Threat
The colder conditions are associated with a Pacific trough approaching southern Colorado.
As the weather system moves closer, colder air will spread across the region, increasing the potential for freezing temperatures in the San Luis Valley.
The valley's geography can also favor significant overnight cooling, especially when colder air settles into lower lying locations.
Residents Should Protect Outdoor Plants
Homeowners and gardeners should consider bringing potted plants indoors and covering sensitive vegetation before Wednesday night.
Residents with irrigation equipment or other exposed items vulnerable to freezing temperatures should also evaluate whether protective measures are needed.
A Freeze Watch indicates that conditions favorable for freezing temperatures are possible, but the precise temperatures and impacts remain subject to change.
The National Weather Service could upgrade the watch to a Freeze Warning if confidence increases.
Residents should monitor updated forecasts through Wednesday as the potential for a damaging freeze becomes clearer.