I've used mine in temps down to the teens... This on a 3,100+ mile bicycle ride from FL to NY from January to the middle of April. I meandered up the coast as far west as Charlotte, NC. It was outside Charlotte where I got to experience over night temperatures in the teens and daytime temperatures in the 20s and low 30s. The stove cooked and kept me a bit warmer when I got up in the morning.
The last few trips I used an MSR WhisperLite International and an MSR Pocket Rocket Deluxe. The WhisperLite uses liquid fuel (white gas, unleaded gasoline). The Pocket Rocket uses canisters. I found I wasn't really cooking any more, mostly boiling water. On the first FL to NY trip I was "cooking" and actually carried a gallon can of Coleman fuel with me. This as using it as a heat source and cooking meals I went through fuel! I found the smaller and much lighter Pocket Rocket was great on my 1,200 mile 2022 trip. I put it inside my pot for packing purposes.
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