Johns Creek is under a freeze warning from 1 a.m. to 9 a.m. Sunday, with a low around 30. Frost is also likely early Saturday, so cover tender plants both nights.

Overview

Johns Creek is under a freeze warning from 1 a.m. to 9 a.m. Sunday. The low is forecast around 30 degrees. A frost advisory also covers the city from 1 a.m. to 9 a.m. Saturday, with a low around 34.

The National Weather Service in Peachtree City issued both at 11:24 a.m. Friday. They cover North Fulton, the forecast zone Johns Creek sits in, along with Gwinnett, DeKalb and much of central and north Georgia.

What the weather service issued

The details come from the weather service’s alert for North Fulton:

  • Frost advisory: 1 a.m. to 9 a.m. Saturday, Nov. 14. Temperatures as low as 34 will bring frost.
  • Freeze warning: 1 a.m. to 9 a.m. Sunday, Nov. 15. Temperatures as low as 29 are expected across the warning area.

The weather service said frost and freeze conditions could kill crops and other sensitive plants. It said they could possibly damage unprotected outdoor plumbing. Sensitive outdoor plants may be killed if left uncovered, it said.

The Johns Creek forecast

The weather service’s point forecast for Johns Creek gives these temperatures:

Low Next day’s high Frost
Friday night into Saturday Around 34 Near 54 Saturday Patchy, after 1 a.m.
Saturday night into Sunday Around 30 Near 56 Sunday Widespread, after 10 p.m.
Sunday night into Monday Around 35 Near 56 Monday None forecast

Skies are forecast to be clear both nights. Friday night brings a northwest wind with gusts as high as 25 mph. Saturday night’s wind is light from the north.

What it means for you

The weather service’s instruction is to “take steps now to protect tender plants from the cold.” Saturday night is the colder of the two. Frost is forecast to start around 10 p.m. Saturday, so plants left out on Saturday evening are the ones at risk.

  • Cover or bring in tender and potted plants before dark Saturday.
  • Check outdoor plumbing that has no protection, such as exposed pipes and hose bibs. The warning names it as at risk.
  • Expect frost on windshields early Saturday and Sunday. The point forecast clears it by about 9 a.m. Saturday and 8 a.m. Sunday.

Warnings can change. The latest wording for Johns Creek is on the weather service’s active alerts for North Fulton.