Sub-Freezing Temperatures Threaten Outdoor Vegetation
Minnesota faces a weather split, bringing sub-freezing temperatures and frost advisories to parts of northern and central counties before a warmer finish takes hold, according to a report by Inforum. Freeze Warnings and Frost Advisories take effect for the early morning hours of Monday, October 5, 2026, putting sensitive outdoor vegetation at risk before afternoon temperatures climb later in the week.
Freezing Conditions Across Northern and Central Counties
A Freeze Warning runs from 1 a.m. to 9 a.m. CDT on Monday, October 5, for Koochiching County, northern Itasca County, northern and central St. Louis County, and inland portions of Cook and Lake counties, where temperatures could drop as low as 28 degrees. Frost Advisories cover additional Northland communities during the same hours, including Duluth, Grand Rapids, Walker, Brainerd, and Aitkin. In central Minnesota, a separate Frost Advisory covers Benton, Chisago, Isanti, Kanabec, Mille Lacs, Morrison, and Todd counties, with the National Weather Service noting that rural and low-lying areas face the highest risk of frost damage.
Warm Finish and Dry Pattern by Tuesday
Sunnier and significantly warmer conditions return by Tuesday, October 6, delivering the warmest afternoon of the three-day stretch under a generally dry pattern. In northern Minnesota, Tuesday highs climb to 69 degrees in Thief River Falls, 70 in Bemidji, and 71 in Duluth. Central communities like Morris and Willmar reach 76 degrees, while St. Cloud hits 75. Across southern Minnesota, Tuesday brings clear sunshine with highs reaching 78 degrees in Marshall, 76 in New Ulm, and 73 in Rochester, maintaining a dry forecast throughout the region.
When Do Freeze Warnings Expire?
When do the Freeze Warnings and Frost Advisories expire?
The National Weather Service alerts expire at 9 a.m. CDT on Monday, October 5, 2026, after which daytime temperatures recover into the upper 50s and 60s across the affected regions.
Which southern Minnesota communities experience the warmest temperatures on Tuesday?
Marshall reaches a high of 78 degrees on Tuesday afternoon, while New Ulm hits 76 degrees and Rochester reaches 73 degrees under clear skies.
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