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Basil Growing Season for South Dakota

The NOAA National Climatic Data Center provides information to the public about spring and fall frost dates in the United States and the length of the expected growing season for each area. These statistics are calculated using data collected from 1971 to 2000, across 4300 weather stations located in every part of the country.

While informative, the statistics that NOAA provides is overwhelming. So, we took the liberty of extracting the most basic information that we feel would be useful to someone interested in growing basil outdoors.

The table below lists the date after which it should be safe to plant basil outdoors in each area of the state. This information is based on NOAA’s calculations for a 10% probability of temperatures falling below 36 degrees Fahrenheit. This means that, on average, there is only a 10% chance that you will see frost after this date. Also listed is the estimated length of the growing season. This is how many days you can expect to have before the risk of frost is greater than 10%.

Please use this information at your own risk. You must take into consideration many varying factors, for example, micro-climates or the presence of valleys and bodies of water, to determine your actual growing season.

StateCountyLast Frost DateLength of Growing Season
SDAurora5/25115
SDBeadle6/02104
SDBennett6/1492
SDBon Homme5/19122
SDBrookings6/0596
SDBrown5/28104
SDBuffalo5/31103
SDButte6/0398
SDCampbell5/29107
SDCharles Mix5/19122
SDClark5/28112
SDClay5/22115
SDCodington6/0399
SDCorson6/0794
SDCuster7/0551
SDDavison5/25115
SDDay6/02104
SDDeuel5/30107
SDDewey6/02105
SDDouglas5/21118
SDEdmunds6/1683
SDFall River6/2575
SDFaulk6/1479
SDGrant5/30106
SDGregory5/27115
SDHaakon6/2080
SDHamlin6/1686
SDHand5/26112
SDHanson5/24117
SDHarding6/1582
SDHughes6/2274
SDHutchinson5/25114
SDHyde6/1383
SDJackson6/0798
SDJerauld5/23122
SDJones5/26113
SDKingsbury5/25116
SDLake5/25114
SDLawrence6/2278
SDLincoln5/30104
SDLyman6/1590
SDMarshall6/0495
SDMccook5/24117
SDMcpherson5/30104
SDMeade6/1195
SDMellette6/02103
SDMiner5/26111
SDMinnehaha5/30106
SDMoody6/02102
SDPennington6/1889
SDPerkins6/2855
SDPotter5/28107
SDRoberts6/1482
SDSanborn5/27109
SDShannon6/1194
SDSpink6/1487
SDStanley5/24122
SDSully5/31105
SDTodd6/0998
SDTripp5/26116
SDTurner5/26107
SDWalworth6/0396
SDYankton5/19124
SDZiebach6/1886