A personal watercraft in South Dakota is off the water for about 7 months a year at Sioux Falls, and the median first 32°F night arrives October 1 at Rapid City (NOAA 1991-2020). 20 jet ski & PWC storage facilities are listed in South Dakota, 20 with indoor or climate-controlled space.
| Month | Sioux Falls high / low | personal watercraft | Rapid City snow | Rapid City high / low | personal watercraft |
|---|---|---|---|---|---|
| Jan | 27° / 9° | off the water | 5.3 in | 36° / 13° | off the water |
| Feb | 32° / 13° | off the water | 7.7 in | 38° / 14° | off the water |
| Mar | 45° / 24° | off the water | 8.4 in | 48° / 23° | off the water |
| Apr | 59° / 36° | off the water | 10.1 in | 57° / 31° | off the water |
| May | 71° / 48° | wetsuit weather | 1.5 in | 67° / 42° | wetsuit weather |
| Jun | 81° / 59° | on the water | 0.0 in | 78° / 52° | on the water |
| Jul | 85° / 63° | on the water | 0.0 in | 86° / 59° | on the water |
| Aug | 83° / 61° | on the water | 0.0 in | 85° / 56° | on the water |
| Sep | 76° / 52° | wetsuit weather | 0.1 in | 76° / 46° | on the water |
| Oct | 61° / 38° | off the water | 3.0 in | 60° / 34° | off the water |
| Nov | 45° / 25° | off the water | 5.7 in | 47° / 22° | off the water |
| Dec | 32° / 13° | off the water | 6.7 in | 37° / 14° | off the water |
Jet Ski column rule: on the water from a 76°F high; wetsuit weather from 66°F; off the water below.
By that rule a personal watercraft at Sioux Falls has 3 months on the water (June to August), 2 of wetsuit weather and 7 off the water. By that rule a personal watercraft at Rapid City has 4 months on the water (June to September), 1 of wetsuit weather and 7 off the water.
South Dakota is severe-freeze country for a personal watercraft: Sioux Falls averages 8.5°F on January nights and about 24.9 nights a year at or below 0°F, so full winterization is mandatory and heated space is worth pricing.
20 live listings in 9 cities; by listed type: 20 indoor, 20 covered and 20 outdoor (types overlap). No South Dakota jet ski & PWC storage listing publishes a rate on StowHelp.
| Facility | City | Listed storage | Listed amenities | Also listed for |
|---|---|---|---|---|
| I29 Storage | Harrisburg | indoor, outdoor, covered | Boat | |
| B-21 Storage | Box Elder | indoor, outdoor, covered | security cameras, gated entry | Boat |
| Big Time Storage | Sioux Falls | indoor, outdoor, covered | security cameras, gated entry | Boat |
| Black Hills Outdoor Storage | Rapid City | indoor, outdoor, covered | security cameras, gated entry | Boat |
| Reno Gulch Self Storage | Hill City | indoor, outdoor, covered | Boat | |
| Storage Solutions - Biegler's | Aberdeen | indoor, outdoor, covered | Boat | |
| Proud Angler Storage | Pierre | indoor, outdoor, covered | Boat | |
| Tri-State Storage | Sioux Falls | indoor, outdoor, covered | Boat | |
| ABC Storage | Pierre | indoor, outdoor, covered | security cameras, gated entry | Boat |
| Phase Storage RV-Boat-Auto | Rapid City | indoor, outdoor, covered | Boat | |
| Stor-It-All | Box Elder | indoor, outdoor, covered | Boat | |
| Recreational Storage LLC | Summerset | indoor, outdoor, covered | Boat | |
| SoDak Storage | Spearfish | indoor, outdoor, covered | Boat | |
| Black Dog Storage | Harrisburg | indoor, outdoor, covered | security cameras, gated entry | Boat |
| City | Jet Ski & PWC Storage listings | Indoor | Climate-controlled | Outdoor |
|---|---|---|---|---|
| Rapid City | 5 | 5 | 0 | 5 |
| Sioux Falls | 5 | 5 | 0 | 5 |
| Box Elder | 2 | 2 | 0 | 2 |
| Harrisburg | 2 | 2 | 0 | 2 |
| Pierre | 2 | 2 | 0 | 2 |
| Aberdeen | 1 | 1 | 0 | 1 |
| Hill City | 1 | 1 | 0 | 1 |
| Spearfish | 1 | 1 | 0 | 1 |
| Summerset | 1 | 1 | 0 | 1 |
NOAA's 1991-2020 median first 32°F night is October 6 at Sioux Falls and October 1 at Rapid City; winterize by September 17, two weeks ahead of the earlier date. By our personal watercraft rule Sioux Falls stays on the water through August and Rapid City through September, then 2 months of wetsuit weather follow at Sioux Falls. 20 South Dakota listings offer indoor or climate-controlled space.
7 at Sioux Falls (September to May) and 7 at Rapid City (October to May), plus 2 and 1 months of wetsuit weather. Those off the water months hold 46.9 of the 48.5 inches of snow Rapid City averages a year (97%), which is the load on a cover or carport roof. At Sioux Falls a personal watercraft is on the water from June to August (3 months), against 4 at Rapid City.
Of 20 live South Dakota listings, 20 list indoor space and 0 climate-controlled units, against 20 outdoor and 20 covered. By city: Rapid City (5 listed, 5 indoor), Sioux Falls (5 listed, 5 indoor), Box Elder (2 listed, 2 indoor) and Harrisburg (2 listed, 2 indoor). Most indoor listings: Rapid City (5), Sioux Falls (5) and Box Elder (2). Ask whether indoor means heated; listings span 9 cities in all.
At Sioux Falls, 5 months average a low at or below 32°F, all of them off the water months by our personal watercraft rule. Sioux Falls logs 162.0 nights at or below 32°F and 24.9 at or below 0°F a year; January, the coldest month, averages 8.5°F and is off the water for a personal watercraft.
After the last frost. The median last 32°F night is May 1 at Sioux Falls and May 12 at Rapid City; the last 28°F hard freeze comes around April 22 and May 2. Our rule makes June the first month on the water at Sioux Falls and June at Rapid City. That month Sioux Falls averages a 58.8°F low and a 80.9°F high. Reverse each winterization step first.
South Dakota jet ski & PWC storage listings span 9 cities, led by Rapid City (5 listed), Sioux Falls (5 listed), Box Elder (2 listed), Harrisburg (2 listed) and Pierre (2 listed). For outdoor winter parking, Rapid City (5 outdoor) and Sioux Falls (5 outdoor) lead. Statewide, 20 list outdoor, 20 covered and 20 indoor or climate-controlled spaces. Compare the cities nearest you before October 1.
NOAA NCEI Climate Normals 1991-2020 (USW00014944, USW00024090); NOAA AOML hurricane impacts 1851-2025; StowHelp listings 2026-10-07 (methodology).