ALERT:  Frost Advisory

Area Temperatures

Marquette County

Williams Park: Pine & Michigan on the eastside of Marquette

40° (03:45 pm)

McCarty's Cove: U.S. Coast Guard Station on lakefront

38°(03:36 pm)

Trowbridge: Near Trowbridge Park

41° (03:53 pm)

Negaunee: Negaunee MDOT station on Hwy 41

42° (04:32 pm)

Sawyer Airport: near Gwinn

45° (03:47 pm)

Big Bay: Big Bay HADS station

43° (03:40 pm)

Republic: Co Rd LD & 601

51° (03:45 pm)

Upper Michigan

Chatham: U.S. Climate Reference Network site for Upper Peninsula

42° (03:45 pm)

Munising: Munising Lakeshore AWOS station

38° (03:56 pm)

Escanaba: Delta County Airport

55° (03:56 pm)

Iron Mountain: Ford Airport

59° (03:54 pm)

Houghton: Houghton County Memorial Airport

49° (03:53 pm)

Ironwood: Gogebic County Airport

51° (03:56 pm)

Sault Ste. Marie: Sault Ste. Marie Municipal Airport

41° (03:55 pm)

All times Eastern

Marquette County Weather Forecast

via the National Weather Service

Updated: 02:22 PM EDT May 20, 2026

Late This Afternoon: Sunny. North winds 5 to 10 mph.
Tonight: Clear. Widespread frost. Lows in the lower 30s. Northeast winds 5 to 10 mph, becoming light southwest after midnight.
Thursday: Sunny in the morning, then becoming partly cloudy. Highs around 59. South winds 5 to 10 mph.
Thursday Night: Mostly clear. Areas of frost after midnight. Lows around 34. South winds 5 to 10 mph.
Friday: Partly cloudy. Highs around 62. Southeast winds 5 to 10 mph with gusts up to 20 mph.
Friday Night: Cloudy. Lows around 41. East winds 5 to 10 mph with gusts up to 20 mph.
Saturday: Mostly cloudy with a 50 percent chance of rain showers. Highs around 59.
Saturday Night and Sunday: Mostly cloudy. Lows around 43. Highs around 65.
Sunday Night: Partly cloudy. Lows around 45.
Memorial Day through Tuesday: Mostly clear. Highs 75 to 80 inland to around 71 at the shore. Lows around 50.
Tuesday Night: Partly cloudy. Lows around 50.
Wednesday: Mostly sunny. Highs 74 to 79 inland to around 67 at the shore.

U.P. Weather Story

Upper Peninsula Weather Story graphic
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XFrost Advisory issued May 20 at 1:57PM EDT until May 21 at 9:00AM EDT by NWS Marquette MI

* WHAT...Temperatures as low as 28 will result in frost formation.

* WHERE...Portions of central Upper and western Upper Michigan.

* WHEN...From 11 PM EDT /10 PM CDT/ this evening to 9 AM EDT /8 AM
CDT/ Thursday.

* 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.
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(Auto night: 10:46 PM - 4:45 AM)