10 Best Weatherproof Padlocks 2025 in the United States

The Master Lock Magnum Heavy Duty Outdoor Padlock is robust and well-suited for outdoor use. Its Dual Armor construction, featuring a laminated steel lock body with a weather-resistant cover, enhances durability. The shackle is made from Tough-Cut octagonal boron-carbide, making it significantly harder and more resistant to cutting compared to regular hardened steel shackles. This padlock's 4-pin cylinder and dual ball bearing locking mechanism offer increased resistance to picking and prying, providing added security for your valuables stored outdoors.

The covered keyway and shackle offer additional protection against the elements, making it truly weatherproof and suitable for outdoor storage, fences, gates, and sheds. The lock body is reasonably sized at 1-7/8 inches wide, and the extended shackle provides flexibility for various applications. The 2-pack includes two keys that can open both locks, which is convenient for users managing multiple access points.

However, the padlock's weight (1.12 pounds) may be considered heavy by some users, and it might not fit all types of storage units or lockers without careful measurement. Despite these minor drawbacks, the padlock performs well in terms of security and durability.

The Master Lock Combination Lock, M175XDLF, is a heavy-duty weatherproof padlock designed for outdoor use, making it an excellent choice for securing gates, sheds, or storage areas. One of its standout features is the resettable four-digit combination, which allows for easy personalization and eliminates the need for keys, reducing the risk of losing them. The lock is constructed from durable zinc and features a tough octagonal boron-carbide shackle, which is significantly harder than traditional hardened steel. This toughness provides impressive resistance against picking and prying, enhancing security further.

For those concerned about weather conditions, this padlock comes with a shackle seal and a covered dial, offering superior protection against moisture and dust, thus extending its lifespan. The extended shackle is another plus, allowing for flexibility in various applications, especially when securing items with different thicknesses.

There are some considerations to keep in mind. While the combination lock is convenient, it may be perceived as less secure than traditional key locks, particularly if the combination is not chosen wisely. Additionally, the lock's size might not suit all applications, especially if a more compact model is required. The one-directional dial may also pose challenges in low-light scenarios, as it relies on remembering the specific turning direction.

The Master Lock Magnum Heavy Duty Outdoor Padlock with Key, model M115XDLF, is designed for robust outdoor use. It features a laminated steel body with a weather-resistant cover, enhancing its durability against harsh weather. The shackle is made from Tough-Cut octagonal boron-carbide, which is 50% harder than typical hardened steel, offering a high level of cut resistance—ideal for securing fences, gates, sheds, and more.

The 4-pin cylinder and dual ball bearing locking mechanism increase protection against picking and prying attempts, while a covered keyway and shackle add extra weather protection. The padlock's dimensions are compact with a 1-7/8 inch wide body and a 5/16 inch diameter shackle, providing flexibility for various applications. It includes one lock and two keys for convenience.

The primary material listed as plastic might be confusing, as the core body is steel with plastic covering for weather resistance. Weighing only 3.2 ounces, it is lightweight, which may or may not be a concern depending on the user's preference. It ranks #2 in Keyed Padlocks, highlighting its popularity and reliability as an outdoor locking solution. It’s important to measure your door's backset, cross bore, and thickness to ensure proper fitment.