BOISE, Idaho — Freezing temperatures are likely in store for the entire Treasure Valley, this week. The National Weather Service in Boise issued a Freeze Warning for late Tuesday night through Wednesday morning. Low temperatures in the valley are expected to dip as low as 27° early Wednesday morning.
This will likely be the first time this season that many parts of the valley have seen temps as cold as 32°, or colder.
The coldest time of day will be close to sunrise, at 7:54 a.m. While this is well below the normal 42° low for this time of year, it's not far off from the average date for the first freeze in Boise. To see more frost/freeze data for the region, click here.
Low temperatures at the Boise airport are expected to lower to 32° again Thursday and Friday mornings.
Frost and freezing temperatures can kill sensitive plants and flowers, and could potentially damage pipes. The concern for freezing pipes and in-ground sprinkler systems grows as temperatures get down to 28° or below for longer than an hour. While this isn't a major concern at this time, this Freeze Warning is a great "heads up" to start to prepare homes, yards and gardens for the colder weather ahead.
Treasure Valley locals should take these steps now to protect plants, crops and plumbing from the cold:
- Disconnect hoses from any outside faucets and drain them to protect the faucet and water lines.
- Sprinkler systems with above-ground backflow preventers should be covered if they haven’t already been blown out
- If a sprinkler system hasn’t been blown out yet, it should be scheduled to get done as soon as possible
- If anyone has delicate plants or a garden, they should cover them with fabric (i.e. a sheet or burlap) the night before through mid-morning. That means plants will need to be covered each morning Tuesday through Friday in the Treasure Valley.
- If someone owns an RV, they should have it winterized as soon as possible. Depending on how it is stored, its water lines could freeze.
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