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Frost Advisory — Louisa, IA, Henry, IA, Des Moines, IA, Van Buren, IA, Lee, IA, Henry, IL, Bureau, IL, Putnam, IL, Mercer, IL, Henderson, IL, Warren, IL, Hancock, IL, McDonough, IL, Scotland, MO, Clark, MO
Issued
1:00 AM CDT · Sat, Oct 17 2026
Expires
9:00 AM CDT · Sat, Oct 17 2026
Issuing Office
NWS KDVN

Affected Areas

Louisa, IA Henry, IA Des Moines, IA Van Buren, IA Lee, IA Henry, IL Bureau, IL Putnam, IL Mercer, IL Henderson, IL Warren, IL Hancock, IL McDonough, IL Scotland, MO Clark, MO

Official Bulletin

* WHAT...Temperatures as low as 33 will result in frost formation.

* WHERE...Portions of north central, northwest, and west central
Illinois, southeast Iowa, and northeast Missouri.

* WHEN...From 1 AM to 9 AM CDT Saturday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.