The short answer is no, insurance companies don’t offer proper weekend-only car insurance. The shortest standard policy term is typically six months, and offers for one-day or one-week coverage are often misleading or not from reputable providers. There are legitimate alternatives if you only need coverage for a short period.
You can purchase a standard policy and cancel it early, or consider rental car insurance if you're driving temporarily. Non-owner insurance is a good option if you don’t own a car but still need proof of coverage. Depending on your driving habits, Usage-based, rideshare, or pay-per-mile insurance is also worth exploring.