Michigan Frost Dates: Last and First Frost by Town

213 NOAA weather stations · 1991–2020 U.S. Climate Normals · Data updated 2026-10-29

Quick answer

Across Michigan's 211 NOAA stations with regular frost, the median last spring frost is May 8 and the median first fall frost is October 11. Last frost dates range from April 17 at S Haven to June 7 at Vanderbilt 11ENE, so enter your ZIP code below for the station nearest you.

How frost dates vary across Michigan

North vs south: stations in the northern third of the state (north of 45.0°N) reach their median last frost about 21 days later than the southern third (south of 43.0°N).
Safety margin: the median 10%-risk date (May 24) is about 16 days after the median last frost. Waiting until then cuts the chance of a killing frost on tender transplants from 1 in 2 to 1 in 10.

Frost dates at Michigan's major weather stations

These National Weather Service stations, mostly at airports, have the longest and most complete records in the state.


Adrian Lenawee County Airport	796	Apr 27	May 14	Oct 20	173
Alpena County Regional Airport	684	May 17	May 31	Oct 1	136
Alpena Wwtp	590	May 5	May 21	Oct 17	163
Ann Arbor Municipal Airport	839	May 8	May 26	Oct 4	147
Battle Creek Kellogg Airport	928	Apr 30	May 17	Oct 19	170
Benton Harbor Airport	643	May 4	May 22	Oct 17	164
Cadillac	1,295	May 19	Jun 3	Oct 1	135
Chatham 1 SE	875	May 27	Jun 12	Sep 28	124
Copper Harbor	626	May 10	Jun 2	Oct 21	161
Detroit City Airport	626	Apr 21	May 6	Oct 31	190
Detroit Metro Airport	631	Apr 20	May 8	Oct 27	188
Detroit Willow Run Airport	777	Apr 24	May 11	Oct 24	179
Escanaba	590	May 13	May 31	Oct 7	147
Flint Bishop Intl Airport	770	May 6	May 23	Oct 10	155
Gaylord 9 SSW	1,461	May 15	May 30	Oct 7	145
Gaylord Otsego County Airport	1,335	May 22	Jun 6	Sep 30	130
Gladwin	775	May 9	May 23	Oct 4	148
Grand Marais 2 E	624	May 27	Jun 13	Oct 10	138
Grand Rapids	778	Apr 29	May 15	Oct 20	174
Hancock Houghton County Airport	1,063	May 17	Jun 3	Oct 1	138
Holland Tulip City Airport	689	Apr 28	May 16	Oct 21	175
Houghton Lake Roscommon Airport	1,151	May 19	Jun 3	Sep 23	125
Iron Mountain Ford Airport	1,149	May 25	Jun 6	Sep 24	121
Jackson Reynolds Field	998	May 1	May 18	Oct 14	164
Kalamazoo Battle Ck Intl Airport	868	Apr 28	May 13	Oct 18	172
Lansing Capital City Airport	841	May 1	May 18	Oct 13	162
Marquette	665	May 8	May 23	Oct 21	164
Marquette	1,411	May 22	Jun 4	Sep 29	129
Mount Clemens Ang Base	580	Apr 30	May 15	Oct 24	174
Munsing Lakeshore	612	May 23	Jun 8	Oct 10	138
Muskegon County Airport	625	Apr 30	May 18	Oct 19	170
Pellston Regional Airport	705	May 31	Jun 21	Sep 18	108
Pontiac Oakland County Intl Airport	976	Apr 29	May 14	Oct 20	172
Port Hope	590	Apr 28	May 14	Nov 3	187
Saginaw Mbs Intl Airport	660	Apr 26	May 13	Oct 17	172
Sault Ste Marie Sanderson Field	722	May 9	May 27	Oct 11	151
Traverse City Cherry Cptl Airport	618	May 12	May 27	Oct 16	155

All 213 stations in Michigan

Last frost and first frost are medians: a 50% chance of a 32°F night after (spring) or before (fall) that date. 10% risk is the spring date with only a 1-in-10 chance of a later frost. Click a column to sort.

Filter by station name


Adrian 2 NNE	760	May 1	May 17	Oct 15	164
Adrian Lenawee County Airport	796	Apr 27	May 14	Oct 20	173
Alberta Ford For Center	1,310	May 23	Jun 8	Oct 1	128
Algonac Wwtp	580	May 3	May 23	Oct 18	167
Allegan 5NE	750	May 4	May 22	Oct 15	160
Alma	729	May 1	May 19	Oct 13	164
Alpena 10NW	740	May 13	May 30	Oct 3	141
Alpena County Regional Airport	684	May 17	May 31	Oct 1	136
Alpena Wwtp	590	May 5	May 21	Oct 17	163
Amasa 1W	1,470	Jun 6	Jul 7	Sep 9	94
Ann Arbor Municipal Airport	839	May 8	May 26	Oct 4	147
Ann Arbor SE	832	May 5	May 20	Oct 10	157
Ann Arbor U Of Mich	813	May 3	May 20	Oct 13	160
Atlanta	879	May 22	Jun 5	Sep 27	127
Atlanta 5 WNW	1,180	May 11	May 31	Oct 6	146
Auburn 2NE	605	May 3	May 23	Oct 14	161
Bad Axe	715	May 5	May 20	Oct 19	163
Baraga 7NW	652	May 25	Jun 9	Sep 23	119
Battle Creek 5NW	923	May 6	May 23	Oct 12	158
Battle Creek Kellogg Airport	928	Apr 30	May 17	Oct 19	170
Benton Harbor Airport	625	May 5	May 26	Oct 15	161
Benton Harbor Airport	643	May 4	May 22	Oct 17	164
Bergland Dam	1,300	May 26	Jun 8	Sep 27	123
Beulah 7SSW	773	May 7	May 25	Oct 20	163
Big Bay 1NW	765	May 22	Jun 5	Oct 6	137
Big Rapids Wtp	898	May 13	May 28	Oct 2	142
Blissfield 1NNE	690	Apr 29	May 15	Oct 13	168
Bloomingdale	736	May 7	May 22	Oct 11	156
Boyne Falls	728	May 23	Jun 6	Oct 3	133
Burton 4N	757	May 8	May 22	Oct 5	148
Cadillac	1,295	May 19	Jun 3	Oct 1	135
Cadillac 9&10 News	1,363	May 15	May 30	Oct 1	139
Carleton 2W	627	Apr 27	May 13	Oct 20	176
Caro Wwtp	690	May 7	May 24	Oct 9	154
Cass City 1 SSW	698	May 7	May 22	Oct 10	152
Central Michigan University	795	Apr 30	May 16	Oct 20	171
Champion Van Riper Park	1,599	Any month	Any month	Any month	96
Charlevoix	593	May 1	May 16	Oct 28	178
Charlotte	902	May 1	May 18	Oct 15	164
Chatham 1 SE	875	May 27	Jun 12	Sep 28	124
Chatham Experiment Farm 2	870	May 30	Jun 21	Sep 27	119
Cheboygan	588	May 11	May 25	Oct 11	152
Chelsea	900	Apr 30	May 17	Oct 12	163
Clarksburg	1,554	Jun 5	Jun 24	Sep 10	96
Coldwater St School	984	May 2	May 18	Oct 13	163
Copper Harbor	626	May 10	Jun 2	Oct 21	161
Copper Harbor Fort Wilkins	625	May 20	Jun 3	Oct 15	148
Cornell 5SE	794	May 19	Jun 3	Oct 1	133
Corunna 2 NE	762	May 5	May 20	Oct 14	160
Covington 1NNW	1,611	May 17	May 30	Sep 30	134
Cross Village 1E	721	May 15	May 30	Oct 16	152
Dearborn	605	May 1	May 18	Oct 15	166
Dearborn #2	605	Apr 27	May 11	Oct 25	181
Detour Village	595	May 5	May 20	Oct 20	167
Detroit City Airport	626	Apr 21	May 6	Oct 31	190
Detroit Metro Airport	631	Apr 20	May 8	Oct 27	188
Detroit Willow Run Airport	777	Apr 24	May 11	Oct 24	179
Dowagiac 1 W	740	May 4	May 22	Oct 11	158
Dundee	660	Apr 27	May 13	Oct 21	176
Durand Wwtp	770	May 3	May 19	Oct 11	159
E Grand Rapids	746	May 6	May 23	Oct 10	157
E Jordan	587	May 23	Jun 6	Oct 2	131
E Jordan 2NW	646	May 16	May 30	Oct 6	144
E Tawas	586	May 8	May 26	Oct 5	148
East Lansing 4 S	880	Apr 28	May 16	Oct 17	173
Eaton Rapids	870	Apr 30	May 16	Oct 14	165
Eau Claire 4 NE	840	Apr 22	May 7	Oct 30	189
Engadine Mdot	685	May 26	Jun 10	Sep 30	127
Escanaba	590	May 13	May 31	Oct 7	147
Essexville	588	Apr 27	May 11	Oct 20	173
Farmington	720	May 1	May 16	Oct 17	165
Fife Lake 2WNW	1,052	May 24	Jun 6	Oct 1	130
Filion 5NNW	635	May 8	May 22	Oct 17	162
Flint 7W	679	May 3	May 20	Oct 13	162
Flint Bishop Intl Airport	770	May 6	May 23	Oct 10	155
Frankenmuth 1SE	635	May 3	May 20	Oct 12	161
Frankfort 2NE	948	May 2	May 20	Oct 26	175
Fremont 4 WSW	800	May 8	May 25	Oct 11	155
Garden Corners	587	May 16	Jun 3	Sep 24	129
Gaylord	1,318	May 25	Jun 8	Sep 26	125
Gaylord 9 SSW	1,461	May 15	May 30	Oct 7	145
Gaylord 9SSW	1,468	May 12	May 29	Oct 7	147
Gaylord Otsego County Airport	1,335	May 22	Jun 6	Sep 30	130
Gladwin	775	May 9	May 23	Oct 4	148
Glennie 2SE	894	May 19	Jun 2	Sep 29	133
Goodrich	910	May 1	May 18	Oct 14	164
Grand Haven Wwtp	605	Apr 30	May 16	Oct 24	175
Grand Marais 2 E	624	May 27	Jun 13	Oct 10	138
Grand Rapids	778	Apr 29	May 15	Oct 20	174
Grayling	1,137	May 23	Jun 7	Sep 27	124
Greenland 6N	791	May 23	Jun 8	Oct 1	128
Greenville 2 NNE	882	May 18	Jun 3	Sep 28	133
Grosse Pointe Farms	613	Apr 29	May 13	Oct 22	176
Gull Lake Biological Station	925	Apr 29	May 18	Oct 20	173
Hale 5SSW #2	816	May 23	Jun 7	Sep 26	127
Hale Loud Dam	728	May 16	May 30	Oct 5	143
Hancock Houghton County Airport	1,063	May 17	Jun 3	Oct 1	138
Harbor Beach 1 SSE	595	May 2	May 17	Oct 24	173
Harrisville 2NNE	585	May 8	May 24	Oct 16	160
Hart 3 WSW	770	May 12	May 28	Oct 10	151
Hastings	821	May 3	May 22	Oct 12	158
Hell	890	Apr 30	May 17	Oct 14	166
Herman	1,717	May 31	Jun 17	Sep 22	115
Hesperia 4 WNW	780	May 17	Jun 1	Oct 1	137
Hillsdale	1,080	May 3	May 19	Oct 12	161
Holland Tulip City Airport	689	Apr 28	May 16	Oct 21	175
Holland Wtp	617	Apr 27	May 12	Oct 25	178
Houghton Lake 2NW	1,161	May 20	Jun 3	Oct 1	136
Houghton Lake 6 WSW	1,135	May 30	Jun 19	Sep 15	106
Houghton Lake Roscommon Airport	1,151	May 19	Jun 3	Sep 23	125
Howell Wwtp	917	May 4	May 21	Oct 7	156
Ionia 2SSW	805	May 3	May 21	Oct 12	161
Iron Mountain Ford Airport	1,149	May 25	Jun 6	Sep 24	121
Iron Mtn-kingsford Wwtp	1,071	May 17	May 31	Oct 1	135
Ironwood	1,430	May 20	Jun 3	Oct 1	132
Ironwood #2	1,520	May 19	Jun 3	Sep 28	130
Ishpeming Wwtp	1,406	May 26	Jun 8	Sep 25	119
Jackson Reynolds Field	998	May 1	May 18	Oct 14	164
Jacobsville	650	Jun 1	Jun 17	Sep 23	115
Kalamazoo Battle Ck Intl Airport	868	Apr 28	May 13	Oct 18	172
Kalkaska	1,035	May 24	Jun 7	Oct 1	128
Kalkaska 11SE	1,083	May 27	Jun 13	Sep 22	117
Kent City 2 SW	840	May 14	May 31	Sep 29	135
Ki Sawyer Wwtp	1,116	May 13	May 29	Oct 2	141
Lake City Experiment Farm	1,230	May 22	Jun 6	Sep 26	125
Lansing Capital City Airport	841	May 1	May 18	Oct 13	162
Lapeer 2W	837	May 4	May 21	Oct 13	161
Lapeer Wwtp	820	May 4	May 22	Oct 14	160
Lexington Wtp	622	May 4	May 20	Oct 24	171
Linden Wwtp	863	May 3	May 20	Oct 12	161
Ludington 4 SE	690	May 17	Jun 1	Oct 7	144
Lupton 1S	908	May 21	Jun 5	Sep 29	129
Manchester	965	Apr 30	May 16	Oct 14	165
Manistee 3SE	670	May 14	May 31	Oct 12	151
Manistique Wwtp	600	May 9	May 23	Oct 10	154
Maple City 1E	799	May 22	Jun 6	Oct 9	140
Marquette	665	May 8	May 23	Oct 21	164
Marquette	1,411	May 22	Jun 4	Sep 29	129
Midland	640	Apr 29	May 16	Oct 16	167
Milan 4 ESE	670	May 3	May 25	Oct 10	158
Milan Wwtp	680	Apr 26	May 9	Oct 19	175
Milford Gm Proving Ground	970	May 6	May 22	Oct 12	157
Mio Hydro Plt	960	May 19	May 31	Oct 2	136
Mio Wwtp	1,037	May 20	Jun 2	Oct 1	133
Monroe	586	Apr 23	May 7	Oct 23	182
Montague 4 NW	650	May 19	Jun 6	Oct 4	136
Moran	695	May 23	Jun 6	Sep 30	130
Morenci	770	May 4	May 19	Oct 7	156
Mount Clemens Ang Base	580	Apr 30	May 15	Oct 24	174
Munising	680	May 16	Jun 2	Oct 14	148
Munsing Lakeshore	612	May 23	Jun 8	Oct 10	138
Muskegon County Airport	625	Apr 30	May 18	Oct 19	170
Newberry Correctional Facility	886	May 21	Jun 4	Oct 5	135
Newport 4SSE	578	Apr 27	May 12	Oct 22	177
Niles	650	Apr 27	May 14	Oct 25	180
Northport 2W	746	May 9	May 24	Oct 26	169
NW Michigan Rsch Farm	820	Apr 30	May 15	Nov 1	182
NWSFO Grand Rapids	775	Apr 30	May 17	Oct 14	167
Oil City 2S	680	May 15	Jun 2	Sep 29	134
Old Mission 3SSW	656	May 13	May 29	Oct 19	158
Onaway 4N	745	May 22	Jun 2	Oct 2	135
Ontonagon 6 SE	790	May 27	Jun 13	Oct 1	127
Owosso Wwtp	730	May 1	May 17	Oct 15	164
Paradise	628	May 31	Jun 16	Oct 1	122
Paulding	1,367	May 31	Jun 13	Sep 19	111
Pellston Airport #2	712	May 21	Jun 5	Sep 27	128
Pellston Regional Airport	705	May 31	Jun 21	Sep 18	108
Petoskey	599	May 6	May 21	Oct 20	166
Petoskey Ncmc	748	May 16	May 31	Oct 9	147
Pickford 3NE	629	May 31	Jun 14	Sep 25	116
Pontiac Oakland County Intl Airport	976	Apr 29	May 14	Oct 20	172
Pontiac Wwtp	890	Apr 26	May 12	Oct 22	177
Port Austin Wwtp	605	May 4	May 19	Oct 26	172
Port Hope	600	May 5	May 21	Oct 24	169
Port Hope	590	Apr 28	May 14	Nov 3	187
Port Huron	590	Apr 19	May 4	Nov 3	196
Rapid River 4SSE	598	May 18	Jun 2	Oct 4	137
Richmond 4 NNW	765	May 1	May 17	Oct 20	170
Rogers City	615	May 10	May 24	Oct 14	154
Rudyard 4N	753	May 24	Jun 10	Oct 1	127
Rudyard 5SE	667	Jun 1	Jun 20	Sep 21	110
S Boardman 2W	1,046	May 24	Jun 8	Oct 4	133
S Haven	590	Apr 17	May 4	Nov 5	201
Saginaw #3	600	Apr 29	May 13	Oct 21	175
Saginaw Mbs Intl Airport	660	Apr 26	May 13	Oct 17	172
Saint Johns	743	Apr 28	May 12	Oct 24	179
Saline 4SW	840	May 2	May 18	Oct 11	160
Saline Wwtp	750	May 2	May 18	Oct 11	160
Sandusky	774	May 2	May 17	Oct 16	165
Sault Ste Marie	630	May 22	Jun 4	Oct 4	136
Sault Ste Marie Sanderson Field	722	May 9	May 27	Oct 11	151
St Ignace	661	May 16	May 29	Oct 13	149
St Ignace Mackinac Br	595	May 7	May 22	Oct 23	167
St James 4SSW Beaver	672	May 11	May 26	Oct 19	159
Stambaugh 2SSE	1,450	Jun 4	Jun 26	Sep 10	95
Standish 4NE	615	May 5	May 23	Oct 10	156
Stephenson 5WSW	690	May 22	Jun 4	Sep 27	126
Tahquamenon Falls State Park	745	Any month	Any month	Any month	95
Tecumseh	780	May 3	May 18	Oct 13	160
Three Rivers	810	Apr 30	May 15	Oct 17	170
Tipton 2WNW	970	May 5	May 23	Oct 10	157
Traverse City Cherry Cptl Airport	618	May 12	May 27	Oct 16	155
Traverse City Munson	635	May 9	May 23	Oct 15	156
Trout Lake 1SW	823	May 21	Jun 5	Oct 1	131
Vanderbilt 11ENE	905	Jun 7	Jun 29	Sep 14	95
Vassar	630	May 9	May 24	Oct 7	150
W Branch 3SE	885	May 15	May 29	Oct 4	143
Watton 2WSW	1,394	May 25	Jun 11	Sep 25	123
Wellston 1N	773	May 28	Jun 13	Sep 25	119
White Lake 4E	1,053	May 10	May 26	Oct 6	148
Whitefish Point	622	May 23	Jun 8	Oct 15	144
Whitmore Lake 1NW	906	May 5	May 21	Oct 13	160
Yale 1 NNW	820	May 12	May 26	Oct 5	147

Frequently asked questions

When is the last frost in Michigan?

The median last spring frost (32°F) across Michigan's NOAA weather stations is May 8, based on 1991–2020 climate normals. It ranges from April 17 at S Haven to June 7 at Vanderbilt 11ENE. For a safer planting date, use the 10%-risk date; the state median for that is May 24.

When is the first frost in Michigan?

The median first fall frost across Michigan's stations is October 11. The earliest median first frost is September 9 at Amasa 1W, and the latest is November 5 at S Haven.

How long is the growing season in Michigan?

The median frost-free season is 155 days across Michigan's stations, from 94 days at Amasa 1W to 201 days at S Haven.

When should I plant tomatoes in Michigan?

Plant tomatoes outdoors after your local last frost, ideally after the 10%-risk date when nights stay above 50°F. At a typical Michigan station that means starting seeds indoors 6–8 weeks before May 8 and transplanting from about May 24. Check your ZIP code, because dates vary by weeks across the state.

Can it frost in summer in Michigan?

Yes, at 2 stations in Michigan a 32°F night is possible in any month, mostly at high elevation or far north. There is no reliable frost-free season there; use cold-hardy crops and row covers.

How to use these dates

Frost dates are 30-year averages from NOAA, not forecasts. Use them to plan seed starting and planting, then watch the 10-day forecast as the date approaches. Cold air settles in valleys and low spots, so a garden at the bottom of a slope can frost a week or more later in spring than the nearest station shows.

Ready to plan? The planting calendar by ZIP code turns these dates into start-indoors, transplant and sowing dates for 30 crops.

Sources and method

Dates are the 32°F freeze probabilities published in the NOAA NCEI 1991–2020 U.S. Climate Normals for each station. Station names are NOAA's, lightly expanded for readability. See the methodology or download the full table.