A car in Montana is garaged for about 7 months a year at Billings, and the median first 32°F night arrives September 26 at Missoula (NOAA 1991-2020). 3 classic & exotic car storage facilities are listed in Montana, 3 with indoor or climate-controlled space.
| Month | Billings high / low | car | Billings snow | Missoula high / low | car |
|---|---|---|---|---|---|
| Jan | 36° / 18° | garaged | 10.6 in | 32° / 18° | garaged |
| Feb | 39° / 20° | garaged | 9.1 in | 37° / 21° | garaged |
| Mar | 49° / 27° | garaged | 8.2 in | 48° / 27° | garaged |
| Apr | 57° / 35° | garaged | 7.5 in | 56° / 32° | dry-day drives |
| May | 67° / 44° | dry-day drives | 0.9 in | 66° / 40° | driving |
| Jun | 77° / 52° | driving | 0.0 in | 73° / 46° | driving |
| Jul | 87° / 59° | driving | 0.0 in | 85° / 52° | driving |
| Aug | 86° / 58° | driving | 0.0 in | 84° / 50° | driving |
| Sep | 74° / 49° | driving | 0.3 in | 73° / 42° | driving |
| Oct | 59° / 37° | garaged | 4.5 in | 56° / 32° | dry-day drives |
| Nov | 46° / 27° | garaged | 6.5 in | 40° / 25° | garaged |
| Dec | 36° / 19° | garaged | 9.8 in | 31° / 18° | garaged |
Car column rule: driving at a 36°F low and under 0.5 in of snow; dry-day drives from a 42°F high with under 3 in of snow; garaged otherwise.
By that rule a car at Billings has 4 months driving (June to September), 1 of dry-day drives and 7 garaged. By that rule a car at Missoula has 5 months driving (May to September), 2 of dry-day drives and 5 garaged.
Montana is hard-freeze country: Billings logs about 141.5 nights at or below 32°F and 39.5 days that never thaw, enough to freeze any water left in the battery, coolant and washer fluid.
3 live listings in 2 cities; by listed type: 3 indoor, 3 covered and 3 outdoor (types overlap). No Montana classic & exotic car storage listing publishes a rate on StowHelp.
| Facility | City | Listed storage | Listed amenities | Also listed for |
|---|---|---|---|---|
| Airport Valet and Storage | Belgrade | indoor, outdoor, covered | security cameras, gated entry | Motorcycle |
| Bobcat Storage | Bozeman | indoor, outdoor, covered | security cameras, gated entry | Motorcycle |
| Sentry Storage | Bozeman | indoor, outdoor, covered | Motorcycle |
| City | Classic & Exotic Car Storage listings | Indoor | Climate-controlled | Outdoor |
|---|---|---|---|---|
| Bozeman | 2 | 2 | 0 | 2 |
| Belgrade | 1 | 1 | 0 | 1 |
NOAA's 1991-2020 median first 32°F night is October 7 at Billings and September 26 at Missoula; winterize by September 12, two weeks ahead of the earlier date. By our car rule Billings stays driving through September and Missoula through September, then 1 month of dry-day drives follow at Billings. 3 Montana listings offer indoor or climate-controlled space.
7 at Billings (October to May) and 5 at Missoula (October to April), plus 1 and 2 months of dry-day drives. Those garaged months hold 56.2 of the 57.4 inches of snow Billings averages a year (98%), which is the load on a cover or carport roof. At Billings a car is driving from June to September (4 months), against 5 at Missoula.
Of 3 live Montana listings, 3 list indoor space and 0 climate-controlled units, against 3 outdoor and 3 covered. By city: Bozeman (2 listed, 2 indoor) and Belgrade (1 listed, 1 indoor). Most indoor listings: Bozeman (2) and Belgrade (1). Ask whether indoor means heated; listings span 2 cities in all.
At Billings, 5 months average a low at or below 32°F, all of them garaged months by our car rule. Billings logs 141.5 nights at or below 32°F and 12.8 at or below 0°F a year; January, the coldest month, averages 17.9°F and is garaged for a car.
After the last frost. The median last 32°F night is May 4 at Billings and May 16 at Missoula; the last 28°F hard freeze comes around April 21 and May 2. Our rule makes June the first month driving at Billings and May at Missoula. That month Billings averages a 52.4°F low and a 77.0°F high. Reverse each winterization step first.
Montana classic & exotic car storage listings span 2 cities, led by Bozeman (2 listed) and Belgrade (1 listed). For outdoor winter parking, Bozeman (2 outdoor) and Belgrade (1 outdoor) lead. Statewide, 3 list outdoor, 3 covered and 3 indoor or climate-controlled spaces. Compare the cities nearest you before September 26.
NOAA NCEI Climate Normals 1991-2020 (USW00024033, USW00024153); NOAA AOML hurricane impacts 1851-2025; StowHelp listings 2026-10-07 (methodology).