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Michigan frost dates

Across 211 NOAA climate stations in Michigan, the median last spring frost (32°F) ranges from Apr 17 at S Haven to Jun 7 at Vanderbilt 11ENE; the typical station sees its last frost around May 8 and its first fall frost around Oct 11.

“Median” dates have a 50% chance of a later spring frost or an earlier fall frost. “10% risk” dates are the safer choice for tender plants: only 1 year in 10 has frost beyond them. Source: NOAA NCEI 1991–2020 Climate Normals. Elevation matters: within a state, frost dates can differ by a month or more between valleys and hills.

StationElevationLast frost (median)Last frost (10% risk)First frost (median)First frost (10% risk)Growing season
Adrian 2 Nne760 ftMay 1May 17Oct 15Oct 1164 days
Adrian Lenawee Co AP796 ftApr 27May 14Oct 20Oct 4173 days
Alberta Ford For Ctr1,310 ftMay 23Jun 8Oct 1Sep 16128 days
Algonac Wwtp580 ftMay 3May 23Oct 18Oct 4167 days
Allegan 5NE750 ftMay 4May 22Oct 15Sep 30160 days
Alma729 ftMay 1May 19Oct 13Sep 29164 days
Alpena 10NW740 ftMay 13May 30Oct 3Sep 22141 days
Alpena Co Rgnl AP684 ftMay 17May 31Oct 1Sep 18136 days
Alpena Wwtp590 ftMay 5May 21Oct 17Sep 30163 days
Amasa 1W1,470 ftJun 6Jul 7Sep 9Aug 2094 days
Ann Arbor Muni AP839 ftMay 8May 26Oct 4Sep 20147 days
Ann Arbor Se832 ftMay 5May 20Oct 10Sep 28157 days
Ann Arbor U Of Mich813 ftMay 3May 20Oct 13Sep 29160 days
Atlanta879 ftMay 22Jun 5Sep 27Sep 12127 days
Atlanta 5 Wnw1,180 ftMay 11May 31Oct 6Sep 20146 days
Auburn 2NE605 ftMay 3May 23Oct 14Sep 29161 days
Bad Axe715 ftMay 5May 20Oct 19Oct 2163 days
Baraga 7NW652 ftMay 25Jun 9Sep 23Sep 7119 days
Battle Creek 5NW923 ftMay 6May 23Oct 12Sep 26158 days
Battle Creek Kellogg AP928 ftApr 30May 17Oct 19Oct 3170 days
Benton Harbor AP625 ftMay 5May 26Oct 15Sep 28161 days
Benton Harbor AP643 ftMay 4May 22Oct 17Sep 30164 days
Bergland Dam1,300 ftMay 26Jun 8Sep 27Sep 10123 days
Beulah 7SSW773 ftMay 7May 25Oct 20Oct 4163 days
Big Bay 1NW765 ftMay 22Jun 5Oct 6Sep 20137 days
Big Rapids Wtp898 ftMay 13May 28Oct 2Sep 18142 days
Blissfield 1NNE690 ftApr 29May 15Oct 13Sep 30168 days
Bloomingdale736 ftMay 7May 22Oct 11Sep 28156 days
Boyne Falls728 ftMay 23Jun 6Oct 3Sep 16133 days
Burton 4N757 ftMay 8May 22Oct 5Sep 22148 days
Cadillac1,295 ftMay 19Jun 3Oct 1Sep 17135 days
Cadillac 9&10 News1,363 ftMay 15May 30Oct 1Sep 18139 days
Carleton 2W627 ftApr 27May 13Oct 20Oct 4176 days
Caro Wwtp690 ftMay 7May 24Oct 9Sep 25154 days
Cass City 1 Ssw698 ftMay 7May 22Oct 10Sep 26152 days
Central Michigan Univ795 ftApr 30May 16Oct 20Oct 5171 days
Charlevoix593 ftMay 1May 16Oct 28Oct 13178 days
Charlotte902 ftMay 1May 18Oct 15Oct 1164 days
Chatham 1 Se875 ftMay 27Jun 12Sep 28Sep 9124 days
Chatham Exp Farm 2870 ftMay 30Jun 21Sep 27Sep 6119 days
Cheboygan588 ftMay 11May 25Oct 11Sep 24152 days
Chelsea900 ftApr 30May 17Oct 12Sep 28163 days
Clarksburg1,554 ftJun 5Jun 24Sep 10Aug 2396 days
Coldwater St School984 ftMay 2May 18Oct 13Sep 30163 days
Copper Harbor626 ftMay 10Jun 2Oct 21Oct 3161 days
Copper Harbor Ft Wilkins625 ftMay 20Jun 3Oct 15Sep 30148 days
Cornell 5SE794 ftMay 19Jun 3Oct 1Sep 16133 days
Corunna 2 Ne762 ftMay 5May 20Oct 14Sep 29160 days
Covington 1NNW1,611 ftMay 17May 30Sep 30Sep 14134 days
Cross Village 1E721 ftMay 15May 30Oct 16Sep 30152 days
Dearborn605 ftMay 1May 18Oct 15Oct 1166 days
Dearborn #2605 ftApr 27May 11Oct 25Oct 10181 days
Detour Village595 ftMay 5May 20Oct 20Oct 6167 days
Detroit City AP626 ftApr 21May 6Oct 31Oct 17190 days
Detroit Metro AP631 ftApr 20May 8Oct 27Oct 14188 days
Detroit Willow Run AP777 ftApr 24May 11Oct 24Oct 7179 days
Dowagiac 1 W740 ftMay 4May 22Oct 11Sep 27158 days
Dundee660 ftApr 27May 13Oct 21Oct 6176 days
Durand Wwtp770 ftMay 3May 19Oct 11Sep 29159 days
E Grand Rapids746 ftMay 6May 23Oct 10Sep 29157 days
E Jordan587 ftMay 23Jun 6Oct 2Sep 17131 days
E Jordan 2NW646 ftMay 16May 30Oct 6Sep 22144 days
E Tawas586 ftMay 8May 26Oct 5Sep 23148 days
East Lansing 4 S880 ftApr 28May 16Oct 17Oct 1173 days
Eaton Rapids870 ftApr 30May 16Oct 14Oct 1165 days
Eau Claire 4 Ne840 ftApr 22May 7Oct 30Oct 15189 days
Engadine Mdot685 ftMay 26Jun 10Sep 30Sep 13127 days
Escanaba590 ftMay 13May 31Oct 7Sep 26147 days
Essexville588 ftApr 27May 11Oct 20Oct 5173 days
Farmington720 ftMay 1May 16Oct 17Oct 1165 days
Fife Lake 2WNW1,052 ftMay 24Jun 6Oct 1Sep 18130 days
Filion 5NNW635 ftMay 8May 22Oct 17Sep 28162 days
Flint 7W679 ftMay 3May 20Oct 13Sep 30162 days
Flint Bishop Intl AP770 ftMay 6May 23Oct 10Sep 26155 days
Frankenmuth 1SE635 ftMay 3May 20Oct 12Sep 28161 days
Frankfort 2NE948 ftMay 2May 20Oct 26Oct 7175 days
Fremont 4 Wsw800 ftMay 8May 25Oct 11Sep 30155 days
Garden Corners587 ftMay 16Jun 3Sep 24Sep 1129 days
Gaylord1,318 ftMay 25Jun 8Sep 26Sep 13125 days
Gaylord 9 Ssw1,461 ftMay 15May 30Oct 7Sep 22145 days
Gaylord 9SSW1,468 ftMay 12May 29Oct 7Sep 24147 days
Gaylord Otsego Co AP1,335 ftMay 22Jun 6Sep 30Sep 10130 days
Gladwin775 ftMay 9May 23Oct 4Sep 22148 days
Glennie 2SE894 ftMay 19Jun 2Sep 29Sep 16133 days
Goodrich910 ftMay 1May 18Oct 14Sep 30164 days
Grand Haven Wwtp605 ftApr 30May 16Oct 24Oct 5175 days
Grand Marais 2 E624 ftMay 27Jun 13Oct 10Sep 25138 days
Grand Rapids778 ftApr 29May 15Oct 20Oct 4174 days
Grayling1,137 ftMay 23Jun 7Sep 27Sep 11124 days
Greenland 6N791 ftMay 23Jun 8Oct 1Sep 14128 days
Greenville 2 Nne882 ftMay 18Jun 3Sep 28Sep 15133 days
Grosse Pointe Farms613 ftApr 29May 13Oct 22Oct 7176 days
Gull Lake Biological Stn925 ftApr 29May 18Oct 20Oct 4173 days
Hale 5SSW #2816 ftMay 23Jun 7Sep 26Sep 14127 days
Hale Loud Dam728 ftMay 16May 30Oct 5Sep 22143 days
Hancock Houghton Co AP1,063 ftMay 17Jun 3Oct 1Sep 16138 days
Harbor Beach 1 Sse595 ftMay 2May 17Oct 24Oct 7173 days
Harrisville 2NNE585 ftMay 8May 24Oct 16Oct 2160 days
Hart 3 Wsw770 ftMay 12May 28Oct 10Sep 25151 days
Hastings821 ftMay 3May 22Oct 12Sep 29158 days
Hell890 ftApr 30May 17Oct 14Oct 1166 days
Herman1,717 ftMay 31Jun 17Sep 22Sep 4115 days
Hesperia 4 Wnw780 ftMay 17Jun 1Oct 1Sep 14137 days
Hillsdale1,080 ftMay 3May 19Oct 12Sep 29161 days
Holland Tulip City AP689 ftApr 28May 16Oct 21Oct 4175 days
Holland Wtp617 ftApr 27May 12Oct 25Oct 6178 days
Houghton Lake 2NW1,161 ftMay 20Jun 3Oct 1Sep 18136 days
Houghton Lake 6 Wsw1,135 ftMay 30Jun 19Sep 15Aug 26106 days
Houghton Lk Roscommon AP1,151 ftMay 19Jun 3Sep 23Sep 6125 days
Howell Wwtp917 ftMay 4May 21Oct 7Sep 27156 days
Ionia 2SSW805 ftMay 3May 21Oct 12Sep 29161 days
Iron Mtn Ford AP1,149 ftMay 25Jun 6Sep 24Sep 8121 days
Iron Mtn-Kingsford Wwtp1,071 ftMay 17May 31Oct 1Sep 17135 days
Ironwood1,430 ftMay 20Jun 3Oct 1Sep 17132 days
Ironwood #21,520 ftMay 19Jun 3Sep 28Sep 12130 days
Ishpeming Wwtp1,406 ftMay 26Jun 8Sep 25Sep 4119 days
Jackson Reynolds Fld998 ftMay 1May 18Oct 14Sep 30164 days
Jacobsville650 ftJun 1Jun 17Sep 23Sep 9115 days
Kalamazoo Battle Ck Intl AP868 ftApr 28May 13Oct 18Oct 2172 days
Kalkaska1,035 ftMay 24Jun 7Oct 1Sep 14128 days
Kalkaska 11SE1,083 ftMay 27Jun 13Sep 22Sep 4117 days
Kent City 2 Sw840 ftMay 14May 31Sep 29Sep 14135 days
Ki Sawyer Wwtp1,116 ftMay 13May 29Oct 2Sep 15141 days
Lake City Exp Farm1,230 ftMay 22Jun 6Sep 26Sep 11125 days
Lansing Capital City AP841 ftMay 1May 18Oct 13Sep 29162 days
Lapeer 2W837 ftMay 4May 21Oct 13Sep 30161 days
Lapeer Wwtp820 ftMay 4May 22Oct 14Sep 29160 days
Lexington Wtp622 ftMay 4May 20Oct 24Oct 7171 days
Linden Wwtp863 ftMay 3May 20Oct 12Sep 30161 days
Ludington 4 Se690 ftMay 17Jun 1Oct 7Sep 20144 days
Lupton 1S908 ftMay 21Jun 5Sep 29Sep 15129 days
Manchester965 ftApr 30May 16Oct 14Oct 1165 days
Manistee 3SE670 ftMay 14May 31Oct 12Sep 27151 days
Manistique Wwtp600 ftMay 9May 23Oct 10Sep 27154 days
Maple City 1E799 ftMay 22Jun 6Oct 9Sep 25140 days
Marquette665 ftMay 8May 23Oct 21Oct 6164 days
Marquette1,411 ftMay 22Jun 4Sep 29Sep 11129 days
Midland640 ftApr 29May 16Oct 16Oct 1167 days
Milan 4 Ese670 ftMay 3May 25Oct 10Sep 25158 days
Milan Wwtp680 ftApr 26May 9Oct 19Oct 2175 days
Milford Gm Proving Ground970 ftMay 6May 22Oct 12Sep 27157 days
Mio Hydro Plt960 ftMay 19May 31Oct 2Sep 17136 days
Mio Wwtp1,037 ftMay 20Jun 2Oct 1Sep 16133 days
Monroe586 ftApr 23May 7Oct 23Oct 9182 days
Montague 4 Nw650 ftMay 19Jun 6Oct 4Sep 16136 days
Moran695 ftMay 23Jun 6Sep 30Sep 15130 days
Morenci770 ftMay 4May 19Oct 7Sep 24156 days
Mt Clemens Ang Base580 ftApr 30May 15Oct 24Oct 7174 days
Munising680 ftMay 16Jun 2Oct 14Sep 30148 days
Munsing Lakeshore612 ftMay 23Jun 8Oct 10Sep 23138 days
Muskegon Co AP625 ftApr 30May 18Oct 19Oct 2170 days
Newberry Correctional Facility886 ftMay 21Jun 4Oct 5Sep 20135 days
Newport 4SSE578 ftApr 27May 12Oct 22Oct 8177 days
Niles650 ftApr 27May 14Oct 25Oct 9180 days
Northport 2W746 ftMay 9May 24Oct 26Oct 11169 days
Nw Michigan Rsch Farm820 ftApr 30May 15Nov 1Oct 16182 days
Nwsfo Grand Rapids775 ftApr 30May 17Oct 14Oct 1167 days
Oil City 2S680 ftMay 15Jun 2Sep 29Sep 15134 days
Old Mission 3SSW656 ftMay 13May 29Oct 19Oct 1158 days
Onaway 4N745 ftMay 22Jun 2Oct 2Sep 16135 days
Ontonagon 6 Se790 ftMay 27Jun 13Oct 1Sep 14127 days
Owosso Wwtp730 ftMay 1May 17Oct 15Oct 1164 days
Paradise628 ftMay 31Jun 16Oct 1Sep 14122 days
Paulding1,367 ftMay 31Jun 13Sep 19Sep 2111 days
Pellston AP #2712 ftMay 21Jun 5Sep 27Sep 11128 days
Pellston Rgnl AP705 ftMay 31Jun 21Sep 18Sep 2108 days
Petoskey599 ftMay 6May 21Oct 20Oct 2166 days
Petoskey Ncmc748 ftMay 16May 31Oct 9Sep 27147 days
Pickford 3NE629 ftMay 31Jun 14Sep 25Sep 6116 days
Pontiac Oakland Co Intl AP976 ftApr 29May 14Oct 20Oct 5172 days
Pontiac Wwtp890 ftApr 26May 12Oct 22Oct 7177 days
Port Austin Wwtp605 ftMay 4May 19Oct 26Oct 7172 days
Port Hope600 ftMay 5May 21Oct 24Oct 7169 days
Port Hope590 ftApr 28May 14Nov 3Oct 21187 days
Port Huron590 ftApr 19May 4Nov 3Oct 20196 days
Rapid Rvr 4SSE598 ftMay 18Jun 2Oct 4Sep 18137 days
Richmond 4 Nnw765 ftMay 1May 17Oct 20Oct 4170 days
Rogers City615 ftMay 10May 24Oct 14Sep 30154 days
Rudyard 4N753 ftMay 24Jun 10Oct 1Sep 14127 days
Rudyard 5SE667 ftJun 1Jun 20Sep 21Sep 6110 days
S Boardman 2W1,046 ftMay 24Jun 8Oct 4Sep 17133 days
S Haven590 ftApr 17May 4Nov 5Oct 24201 days
Saginaw #3600 ftApr 29May 13Oct 21Oct 5175 days
Saginaw Mbs Intl AP660 ftApr 26May 13Oct 17Oct 2172 days
Saint Johns743 ftApr 28May 12Oct 24Oct 7179 days
Saline 4SW840 ftMay 2May 18Oct 11Sep 25160 days
Saline Wwtp750 ftMay 2May 18Oct 11Sep 29160 days
Sandusky774 ftMay 2May 17Oct 16Oct 1165 days
Sault Ste Marie630 ftMay 22Jun 4Oct 4Sep 22136 days
Sault Ste Marie Sanderson Fld722 ftMay 9May 27Oct 11Sep 26151 days
St Ignace661 ftMay 16May 29Oct 13Sep 30149 days
St Ignace Mackinac Br595 ftMay 7May 22Oct 23Oct 6167 days
St James 4SSW Beaver672 ftMay 11May 26Oct 19Oct 2159 days
Stambaugh 2SSE1,450 ftJun 4Jun 26Sep 10Aug 2195 days
Standish 4NE615 ftMay 5May 23Oct 10Sep 26156 days
Stephenson 5WSW690 ftMay 22Jun 4Sep 27Sep 10126 days
Tecumseh780 ftMay 3May 18Oct 13Sep 30160 days
Three Rivers810 ftApr 30May 15Oct 17Oct 1170 days
Tipton 2WNW970 ftMay 5May 23Oct 10Sep 28157 days
Traverse City Cherry Cptl AP618 ftMay 12May 27Oct 16Oct 1155 days
Traverse City Munson635 ftMay 9May 23Oct 15Oct 1156 days
Trout Lake 1SW823 ftMay 21Jun 5Oct 1Sep 14131 days
Vanderbilt 11ENE905 ftJun 7Jun 29Sep 14Aug 2495 days
Vassar630 ftMay 9May 24Oct 7Sep 24150 days
W Branch 3SE885 ftMay 15May 29Oct 4Sep 21143 days
Watton 2WSW1,394 ftMay 25Jun 11Sep 25Sep 10123 days
Wellston 1N773 ftMay 28Jun 13Sep 25Sep 8119 days
White Lake 4E1,053 ftMay 10May 26Oct 6Sep 24148 days
Whitefish Pt622 ftMay 23Jun 8Oct 15Sep 27144 days
Whitmore Lake 1NW906 ftMay 5May 21Oct 13Sep 30160 days
Yale 1 Nnw820 ftMay 12May 26Oct 5Sep 23147 days
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