ALERT:  Frost Advisory

Area Temperatures

Marquette County

Williams Park: Pine & Michigan on the eastside of Marquette

42° (10:00 pm)

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

41°(09:42 pm)

Trowbridge: Near Trowbridge Park

39° (10:11 pm)

Negaunee: Negaunee MDOT station on Hwy 41

41° (11:05 pm)

Sawyer Airport: near Gwinn

50° (09:47 pm)

Big Bay: Big Bay HADS station

46° (09:40 pm)

Republic: Co Rd LD & 601

44° (10:00 pm)

Upper Michigan

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

43° (09:45 pm)

Munising: Munising Lakeshore AWOS station

44° (09:56 pm)

Escanaba: Delta County Airport

46° (10:05 pm)

Iron Mountain: Ford Airport

48° (10:05 pm)

Houghton: Houghton County Memorial Airport

43° (10:05 pm)

Ironwood: Gogebic County Airport

48° (10:10 pm)

Sault Ste. Marie: Sault Ste. Marie Municipal Airport

46° (10:05 pm)

All times Eastern

Marquette County Weather Forecast

via the National Weather Service

Updated: 07:12 PM EDT May 21, 2026

Tonight: Clear this evening, then becoming mostly cloudy. Areas of frost. Lows in the mid 30s. Southeast winds 5 to 10 mph, becoming light south after midnight.
Friday: Mostly sunny. Highs around 63. Southeast winds 5 to 15 mph.
Friday Night: Mostly cloudy. Lows around 42. Southeast winds 5 to 15 mph with gusts up to 25 mph.
Saturday: Mostly cloudy with a 40 percent chance of rain showers. Highs around 61. Southeast winds 5 to 10 mph with gusts up to 25 mph.
Saturday Night: Cloudy with a 40 percent chance of rain showers. Lows around 44. South winds 5 to 10 mph.
Sunday: Warmer. A chance of showers in the afternoon. Mostly cloudy. Highs 67 to 72. Chance of rain 40 percent.
Sunday Night: Mostly clear. Lows around 46.
Memorial Day: A chance of showers in the afternoon. Mostly sunny. Highs around 76 inland to around 68 at the shore. Chance of rain 30 percent.
Monday Night: Mostly clear. Lows around 50.
Tuesday: Sunny. Highs around 79 inland to around 71 at the shore.
Tuesday Night through Thursday: Mostly clear. Lows around 49. 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 21 at 1:47PM EDT until May 22 at 8:00AM EDT by NWS Marquette MI

* WHAT...Temperatures as low as 31 will result in frost formation.

* WHERE...Alger, Baraga, Delta, Dickinson, Iron, Luce, Marquette,
Menominee, Northern Schoolcraft, and Southern Schoolcraft Counties.

* WHEN...From midnight EDT /11 PM CDT/ tonight to 8 AM EDT /7 AM
CDT/ Friday.

* 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: 10:48 PM - 4:44 AM)