Indiana Frost Dates: Last and First Frost by Town

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

Quick answer

Across Indiana's 117 NOAA stations with regular frost, the median last spring frost is April 21 and the median first fall frost is October 21. Last frost dates range from March 29 at Evansville Museum to May 2 at Garrett 1 S, so enter your ZIP code below for the station nearest you.

How frost dates vary across Indiana

North vs south: stations in the northern third of the state (north of 40.6°N) reach their median last frost about 14 days later than the southern third (south of 39.4°N).
Safety margin: the median 10%-risk date (May 7) 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 Indiana's major weather stations

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


Bedford 5 WNW	760	Apr 10	Apr 30	Oct 30	201
Bloomington Monroe County Airport	844	Apr 17	May 5	Oct 22	185
Evansville Regional Airport	400	Apr 4	Apr 19	Oct 29	206
Fort Wayne Intl Airport	791	Apr 24	May 10	Oct 21	178
Goshen Municipal Airport	827	Apr 28	May 13	Oct 19	171
Indianapolis	790	Apr 15	May 2	Oct 26	193
Indianapolis Eagle Creek Airport	823	Apr 12	Apr 29	Oct 29	198
Lafayette Purdue University Airport	599	Apr 26	May 14	Oct 18	173
Muncie Delaware County Airport	937	Apr 16	May 2	Oct 25	190
Shelbyville Municipal Airport	804	Apr 14	Apr 29	Oct 23	191
South Bend Michiana Regional Airport	773	May 1	May 17	Oct 19	170
Terre Haute CAA Airport	575	Apr 14	May 2	Oct 24	192
Terre Haute Hulman Regional Airport	575	Apr 16	May 3	Oct 18	183
Valparaiso Porter County Municipal Airport	770	Apr 20	May 7	Oct 26	187

All 117 stations in Indiana

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


Anderson Sewage Plt	841	Apr 19	May 5	Oct 23	186
Angola	1,020	Apr 30	May 15	Oct 16	167
Attica 2E	727	Apr 22	May 8	Oct 17	176
Bedford 5 WNW	760	Apr 10	Apr 30	Oct 30	201
Berne Wwtp	839	Apr 23	May 7	Oct 22	181
Bloomington Indiana University	830	Apr 15	May 3	Oct 26	192
Bloomington Monroe County Airport	844	Apr 17	May 5	Oct 22	185
Bluffton 6N	861	Apr 24	May 9	Oct 20	179
Boonville 1S	400	Apr 12	Apr 28	Oct 25	196
Boswell 4WNW	772	Apr 25	May 12	Oct 13	169
Brookville	630	Apr 20	May 7	Oct 21	182
Cambridge City 3 N	1,000	Apr 27	May 10	Oct 9	164
Cannelton	402	Apr 2	Apr 20	Nov 7	218
Carmel 3 E	752	Apr 21	May 8	Oct 21	183
Castleton 2 S	824	Apr 18	May 6	Oct 26	190
Chalmers 5 W	720	Apr 25	May 11	Oct 17	173
Columbia City	834	Apr 27	May 14	Oct 17	171
Columbus	609	Apr 11	Apr 30	Oct 25	195
Crane Nsa	730	Apr 9	Apr 29	Oct 31	202
Crawfordsville 6 SE	836	Apr 27	May 13	Oct 12	167
Decatur 1 N	785	Apr 23	May 8	Oct 19	178
Delphi 2 N	556	Apr 22	May 6	Oct 17	179
Dubois S In Forage Fm	690	Apr 25	May 12	Oct 15	172
Elnora	480	Apr 9	Apr 25	Oct 25	197
Elwood	866	Apr 24	May 10	Oct 18	175
English	510	Apr 17	May 4	Oct 19	184
Evansville Museum	374	Mar 29	Apr 11	Nov 10	225
Evansville Regional Airport	400	Apr 4	Apr 19	Oct 29	206
Farmersburg Tv-2	548	Apr 8	Apr 24	Oct 27	201
Farmland 5 NNW	965	Apr 25	May 11	Oct 16	173
Fort Wayne Intl Airport	791	Apr 24	May 10	Oct 21	178
Francesville	680	Apr 26	May 12	Oct 17	173
Frankfort Disposal	824	Apr 21	May 7	Oct 21	181
Franklin Wwtp	720	Apr 20	May 7	Oct 19	180
Freelandville	550	Apr 9	Apr 24	Oct 30	202
Garrett	880	Apr 29	May 11	Oct 17	171
Garrett 1 S	870	May 2	May 16	Oct 10	159
Goshen 3SW	875	Apr 26	May 12	Oct 21	175
Goshen Municipal Airport	827	Apr 28	May 13	Oct 19	171
Greencastle 1 W	735	Apr 27	May 15	Oct 15	169
Greenfield	869	Apr 19	May 7	Oct 22	185
Greensburg	937	Apr 15	May 2	Oct 26	194
Hartford City 4 ESE	924	Apr 22	May 7	Oct 22	181
Huntington	725	May 1	May 16	Oct 14	166
Indiana Dunes Nl	680	Apr 22	May 8	Oct 27	188
Indianapolis	790	Apr 15	May 2	Oct 26	193
Indianapolis Eagle Creek Airport	823	Apr 12	Apr 29	Oct 29	198
Indianapolis Nwfo	790	Apr 12	Apr 28	Oct 27	196
Indianapolis SE Side	845	Apr 20	May 5	Oct 21	183
Jamestown 2 E	962	Apr 23	May 9	Oct 19	178
Jt Myers Locks & Dam	340	Apr 5	Apr 21	Oct 31	209
Kentland	695	Apr 23	May 8	Oct 14	175
Knox Wwtp	690	Apr 26	May 12	Oct 19	174
Kokomo 3 WSW	822	Apr 27	May 13	Oct 18	174
Lafayette 8 S	732	Apr 20	May 6	Oct 20	182
Lafayette Purdue University Airport	599	Apr 26	May 14	Oct 18	173
Lagrange	900	Apr 26	May 14	Oct 21	176
Lakeville	841	May 1	May 18	Oct 13	163
Laporte	809	Apr 19	May 3	Oct 27	191
Logansport Cicott St	600	Apr 20	May 6	Oct 23	185
Lowell	665	Apr 29	May 14	Oct 16	171
Madison Sewage Plt	460	Apr 11	Apr 28	Oct 31	201
Marion 2 N	790	Apr 26	May 12	Oct 20	175
Martinsville 2 SW	592	Apr 24	May 11	Oct 15	173
Milan 5 NE	975	Apr 30	May 15	Oct 16	168
Mount Vernon	357	Apr 7	Apr 27	Oct 28	202
Muncie Delaware County Airport	937	Apr 16	May 2	Oct 25	190
N Manchester Wwtp	760	Apr 26	May 11	Oct 19	174
N Vernon 2 ESE	743	Apr 21	May 10	Oct 21	180
New Castle 3 SW	991	Apr 27	May 12	Oct 17	173
Newburgh L&d	380	Apr 3	Apr 17	Nov 2	214
Northern Indiana WFO	951	Apr 24	May 10	Oct 24	182
Oolitic Purdue Ex Fm	652	Apr 20	May 7	Oct 20	181
Paoli	560	Apr 21	May 7	Oct 18	178
Patoka Lake	561	Apr 10	Apr 26	Nov 1	204
Perrysville 4 WNW	611	Apr 23	May 7	Oct 14	171
Petersburg 61 Brg	472	Apr 20	May 4	Oct 22	186
Plymouth	815	Apr 25	May 13	Oct 21	178
Portland 1 SW	910	Apr 28	May 14	Oct 15	171
Princeton 1 W	480	Apr 13	Apr 30	Oct 25	194
Rensselaer	630	Apr 23	May 7	Oct 18	177
Richmond Wtr Wks	1,005	Apr 24	May 10	Oct 20	180
Rochester	760	Apr 23	May 9	Oct 21	180
Rockville	689	Apr 30	May 15	Oct 12	164
Rushville	948	Apr 19	May 5	Oct 23	185
S Bend	710	Apr 23	May 9	Oct 23	181
Saint Meinrad	510	Apr 11	Apr 30	Oct 26	197
Salem	785	Apr 17	May 4	Oct 22	186
Scottsburg	570	Apr 18	May 3	Oct 20	185
Seymour 2 N	570	Apr 16	May 2	Oct 21	187
Shakamak State Park	549	Apr 14	May 1	Oct 26	193
Shelbyville Municipal Airport	804	Apr 14	Apr 29	Oct 23	191
Shelbyville Sewage Plt	752	Apr 17	May 3	Oct 22	187
Shoals 8 S	477	Apr 15	May 2	Oct 23	189
South Bend Michiana Regional Airport	773	May 1	May 17	Oct 19	170
Spencer	549	Apr 20	May 7	Oct 20	180
Stendal	635	Apr 6	Apr 23	Oct 30	206
Tell City	390	Apr 5	Apr 23	Nov 1	208
Terre Haute CAA Airport	575	Apr 14	May 2	Oct 24	192
Terre Haute Hulman Regional Airport	575	Apr 16	May 3	Oct 18	183
Terre Haute Indiana State	507	Apr 15	May 3	Oct 19	187
Tipton 5 SW	890	Apr 23	May 9	Oct 17	174
Valparaiso Porter County Municipal Airport	770	Apr 20	May 7	Oct 26	187
Valparaiso Wtr Wks	800	Apr 22	May 6	Oct 25	185
Vevay	495	Apr 9	Apr 25	Nov 1	204
Vincennes 5 NE	452	Apr 11	Apr 27	Oct 26	197
W Lafayette 6 NW	708	Apr 26	May 11	Oct 12	169
Wabash	665	Apr 23	May 9	Oct 21	181
Wanatah 2 WNW	735	Apr 29	May 14	Oct 13	166
Warsaw	815	Apr 28	May 14	Oct 18	170
Washington 1 W	482	Apr 10	Apr 27	Oct 25	197
Wheatfield	665	Apr 25	May 11	Oct 17	173
Whitestown	941	Apr 21	May 6	Oct 20	180
Winamac 2SSE	690	Apr 25	May 11	Oct 18	173
Winchester Airport 3 E	1,110	Apr 20	May 5	Oct 21	183
Woodburn 3N	710	Apr 27	May 11	Oct 19	174
Young America	773	Apr 25	May 11	Oct 17	174

Frequently asked questions

When is the last frost in Indiana?

The median last spring frost (32°F) across Indiana's NOAA weather stations is April 21, based on 1991–2020 climate normals. It ranges from March 29 at Evansville Museum to May 2 at Garrett 1 S. For a safer planting date, use the 10%-risk date; the state median for that is May 7.

When is the first frost in Indiana?

The median first fall frost across Indiana's stations is October 21. The earliest median first frost is October 9 at Cambridge City 3 N, and the latest is November 10 at Evansville Museum.

How long is the growing season in Indiana?

The median frost-free season is 181 days across Indiana's stations, from 159 days at Garrett 1 S to 225 days at Evansville Museum.

When should I plant tomatoes in Indiana?

Plant tomatoes outdoors after your local last frost, ideally after the 10%-risk date when nights stay above 50°F. At a typical Indiana station that means starting seeds indoors 6–8 weeks before April 21 and transplanting from about May 7. Check your ZIP code, because dates vary by weeks across the state.

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.