FPUS63 KFSD 181753 SFTSD SDZ001>074-182200- Tabular State Forecast for South Dakota National Weather Service Sioux Falls SD 1253 PM CDT Mon May 18 2026 ROWS INCLUDE... Daily predominant daytime weather 6AM-6PM Forecast temperatures...early morning low/daytime high Probability of precipitation nighttime 6PM-6AM/daytime 6AM-6PM - indicates temperatures below zero MM indicates missing data FCST FCST FCST FCST FCST FCST FCST Today Tue Wed Thu Fri Sat Sun May 18 May 19 May 20 May 21 May 22 May 23 May 24 ...WESTERN SOUTH DAKOTA... Buffalo Shwrs Ptcldy Sunny Ptcldy Ptcldy Sunny Sunny /46 31/60 35/71 40/67 39/65 40/75 45/83 /60 20/00 00/00 10/40 50/30 30/10 10/00 Custer Snoshwr Sunny Ptcldy Tstrms Tstrms Sunny Sunny /37 23/52 31/58 37/60 37/57 38/67 44/77 /100 60/10 10/30 30/70 70/50 50/20 20/10 Faith Shwrs Ptcldy Sunny Ptcldy Ptcldy Ptcldy Sunny /47 31/58 34/69 40/70 41/64 41/74 45/84 /80 70/10 00/10 10/40 60/40 30/20 10/00 Philip Shwrs Ptcldy Ptcldy Ptcldy Tstrms Ptcldy Sunny /48 31/60 33/66 40/71 41/66 41/77 46/87 /80 80/20 00/20 20/30 60/60 40/10 10/00 Pine Ridge Shwrs Sunny Ptcldy Ptcldy Tstrms Sunny Sunny /42 30/59 35/63 39/69 39/65 40/77 45/85 /100 80/10 00/40 20/40 70/50 40/10 10/10 Rapid City Shwrs Sunny Sunny Tstrms Ptcldy Sunny Sunny /43 30/60 34/68 41/69 41/65 41/75 46/86 /90 60/00 00/20 20/60 60/40 40/20 20/10 ...CENTRAL SOUTH DAKOTA... Chamberlain Shwrs Ptcldy Ptcldy Ptcldy Tstrms Ptcldy Sunny /50 37/57 34/65 42/67 43/65 43/74 48/85 /80 70/00 00/00 00/10 50/50 40/20 20/10 Mobridge Shwrs Ptcldy Sunny Ptcldy Shwrs Ptcldy Sunny /48 35/56 33/69 41/70 41/66 41/73 46/84 /90 90/10 00/00 00/20 50/50 30/20 10/10 Pierre Shwrs Ptcldy Sunny Ptcldy Shwrs Ptcldy Sunny /48 36/58 33/67 41/70 42/66 42/74 46/86 /100 90/00 00/10 10/20 50/50 50/20 10/10 Winner Shwrs Ptcldy Ptcldy Ptcldy Tstrms Ptcldy Sunny /48 34/57 34/64 42/67 43/65 43/75 49/85 /60 60/10 00/00 00/20 50/50 50/20 20/10 ...EASTERN SOUTH DAKOTA... Aberdeen Shwrs Mocldy Sunny Ptcldy Shwrs Ptcldy Ptcldy /51 36/55 30/66 40/69 42/65 41/72 45/83 /80 80/00 00/00 00/10 40/50 50/20 20/10 Huron Shwrs Mocldy Sunny Ptcldy Shwrs Ptcldy Sunny /51 38/57 31/66 41/68 43/66 43/73 47/84 /70 80/10 00/00 00/10 30/50 50/30 20/10 Mitchell Shwrs Mocldy Ptcldy Ptcldy Tstrms Ptcldy Sunny /52 39/57 32/65 42/67 43/66 44/73 48/84 /70 80/00 00/00 00/10 40/50 50/20 20/10 Sioux Falls Tstrms Mocldy Ptcldy Mocldy Tstrms Mocldy Ptcldy /56 41/56 34/63 42/64 44/64 45/72 50/82 /70 80/00 00/00 00/10 20/60 50/30 20/20 Sisseton Shwrs Mocldy Sunny Ptcldy Shwrs Ptcldy Ptcldy /53 38/51 32/6441/68 43/64 43/69 47/81 /60 100/10 00/00 00/00 10/50 50/30 20/10 Watertown Shwrs Mocldy Sunny Ptcldy Shwrs Mocldy Ptcldy /53 37/50 31/62 40/65 42/62 42/69 46/80 /70 90/10 00/00 00/00 20/50 50/30 20/10 Yankton Shwrs Ptcldy Ptcldy Mocldy Tstrms Mocldy Ptcldy /54 40/59 34/63 42/64 44/65 45/73 50/84 /70 70/00 00/00 00/10 40/60 60/30 20/20 $$