An RV in Wyoming is winterized for about 5 months a year at Cheyenne, and the median first 32°F night arrives September 22 at Casper (NOAA 1991-2020). 19 RV & motorhome storage facilities are listed in Wyoming, 9 with indoor or climate-controlled space.
| Month | Cheyenne high / low | RV | Casper snow | Casper high / low | RV |
|---|---|---|---|---|---|
| Jan | 40° / 18° | winterized | 9.0 in | 35° / 15° | winterized |
| Feb | 41° / 18° | winterized | 10.9 in | 38° / 15° | winterized |
| Mar | 49° / 25° | winterized | 10.3 in | 49° / 23° | winterized |
| Apr | 55° / 31° | shoulder trips | 10.5 in | 56° / 28° | shoulder trips |
| May | 64° / 40° | camping | 2.6 in | 67° / 37° | shoulder trips |
| Jun | 77° / 49° | camping | 0.1 in | 80° / 45° | camping |
| Jul | 84° / 56° | camping | 0.0 in | 89° / 53° | camping |
| Aug | 82° / 54° | camping | 0.0 in | 87° / 51° | camping |
| Sep | 73° / 46° | camping | 1.5 in | 76° / 42° | camping |
| Oct | 59° / 34° | shoulder trips | 7.0 in | 60° / 31° | shoulder trips |
| Nov | 48° / 25° | winterized | 8.9 in | 46° / 22° | winterized |
| Dec | 39° / 18° | winterized | 11.0 in | 35° / 15° | winterized |
RV column rule: camping at a 40°F low or warmer with highs under 95°F; shoulder trips above a 28°F low; winterized below.
By that rule an RV at Cheyenne has 5 months camping (May to September), 2 of shoulder trips and 5 winterized. By that rule an RV at Casper has 4 months camping (June to September), 3 of shoulder trips and 5 winterized.
Wyoming is hard-freeze country: Casper logs about 183.1 nights at or below 32°F and 41.4 days that never thaw, enough to freeze any water left in the water lines, pump, water heater and toilet valve.
19 live listings in 15 cities; by listed type: 9 indoor, 8 covered and 19 outdoor (types overlap). 1 publishes a monthly rate on StowHelp, from $35 to $35 (median $35).
| Facility | City | Listed storage | Listed amenities | Also listed for |
|---|---|---|---|---|
| New Frontier Self Storage | Cheyenne | indoor, outdoor, covered | Trailer | |
| White Mountain RV/Car Self-Storage | Rock Springs | indoor, outdoor, covered | Trailer | |
| Treedog Storage - Thermopolis | Thermopolis | indoor, outdoor, covered | Trailer | |
| Access Self Storage | Casper | indoor, outdoor, covered | security cameras, gated entry | Trailer |
| Western Storage & RV | Buffalo | indoor, outdoor, covered | Trailer | |
| Treedog Storage - Lander | Lander | indoor, outdoor, covered | Trailer | |
| Pinedale Self Storage | Pinedale | indoor, outdoor, covered | Trailer | |
| Worland RV Park | Worland | outdoor | ||
| Kodiak Mountain Resort RV Park U.S. | Afton | outdoor | ||
| KOA Kampground | Cheyenne | outdoor | ||
| Star Valley Ranch RV Park | Thayne | outdoor | ||
| Oasis Motel and RV Park | Meeteetse | outdoor | ||
| Phillips RV Park | Evanston | outdoor | ||
| Deer Haven RV Park | Saratoga | outdoor | ||
| Yellowstone Trail RV Park | Pinedale | outdoor | ||
| Wolf Den Log Cabin Motel & RV Park | Etna | outdoor | ||
| Grand Storage | Thermopolis | indoor, outdoor | 24-hour access | Boat, Car, Motorcycle, Trailer, Jet Ski, ATV, Snowmobile |
| City | RV & Motorhome Storage listings | Indoor | Climate-controlled | Outdoor |
|---|---|---|---|---|
| Cheyenne | 3 | 1 | 0 | 3 |
| Pinedale | 2 | 1 | 0 | 2 |
| Thermopolis | 2 | 2 | 0 | 2 |
| Afton | 1 | 0 | 0 | 1 |
| Buffalo | 1 | 1 | 0 | 1 |
| Casper | 1 | 1 | 0 | 1 |
| Etna | 1 | 0 | 0 | 1 |
| Evanston | 1 | 0 | 0 | 1 |
| Jackson | 1 | 1 | 0 | 1 |
| Lander | 1 | 1 | 0 | 1 |
NOAA's 1991-2020 median first 32°F night is October 1 at Cheyenne and September 22 at Casper; winterize by September 8, two weeks ahead of the earlier date. By our RV rule Cheyenne stays camping through September and Casper through September, then 2 months of shoulder trips follow at Cheyenne. 9 Wyoming listings offer indoor or climate-controlled space.
5 at Cheyenne (October to April) and 5 at Casper (October to May), plus 2 and 3 months of shoulder trips. Those winterized months hold 50.1 of the 71.8 inches of snow Casper averages a year (70%), which is the load on a cover or carport roof. At Cheyenne an RV is camping from May to September (5 months), against 4 at Casper.
Of 19 live Wyoming listings, 9 list indoor space and 0 climate-controlled units, against 19 outdoor and 8 covered. By city: Cheyenne (3 listed, 1 indoor), Pinedale (2 listed, 1 indoor), Thermopolis (2 listed, 2 indoor) and Afton (1 listed, 0 indoor). Most indoor listings: Thermopolis (2), Cheyenne (1) and Pinedale (1). Ask whether indoor means heated; listings span 15 cities in all.
At Casper, 7 months average a low at or below 32°F: 5 winterized and 2 shoulder trips or camping by our RV rule. Casper logs 183.1 nights at or below 32°F and 14.6 at or below 0°F a year; December, the coldest month, averages 14.8°F and is winterized for an RV. Drain or re-protect the RV after any outing in those 2 months.
After the last frost. The median last 32°F night is May 12 at Cheyenne and May 26 at Casper; the last 28°F hard freeze comes around May 2 and May 11. Our rule makes May the first month camping at Cheyenne and June at Casper. That month Cheyenne averages a 40.2°F low and a 64.4°F high. Reverse each winterization step first.
Wyoming RV & motorhome storage listings span 15 cities, led by Cheyenne (3 listed), Pinedale (2 listed), Thermopolis (2 listed), Afton (1 listed) and Buffalo (1 listed). For outdoor winter parking, Cheyenne (3 outdoor) and Pinedale (2 outdoor) lead. Statewide, 19 list outdoor, 8 covered and 9 indoor or climate-controlled spaces. Compare the cities nearest you before September 22.
NOAA NCEI Climate Normals 1991-2020 (USW00024018, USW00024089); NOAA AOML hurricane impacts 1851-2025; StowHelp listings 2026-10-07 (methodology).