Review: ThermoWorks ThermoDrop Zipper-Pull Thermometer

I picked up this ThermoDrop Zipper-Pull Thermometer to help fill in the temperature data gap in my favorite areas to explore in my area. The forecasts in my area come out of a city that is about 2 hours away by car and there are countless microclimates between here and there. There are mountain weather websites that do their best to make some algorithmic guesses about forecasts but they often miss the mark which leaves me guessing about how to gear up for trips into the mountains.

Last summer, I spent a night out on a mountain bench just below the tree line. According to forecasts for that elevation, I should have seen temperatures down around 32F. The actual temperature never went lower than 56F which was MUCH closer to the forecasted temps for the valley below. This will help inform future trips into this area.

There are a few specific attributes of the ThermoDrop that make it so useful. First, it is extremely compact and lightweight (smaller than the diameter of a US quarter and weighing in at half a gram). Second, it shows the current temp but also records the lowest and highest temp since it was activated which is the real game changer versus most cheap zipper-pull/keychain thermometers.

I have found no end to the usefulness of this little thermometer. I’ve used it to monitor the temperature inside a cooler during power outages, check temps in a crawl space during a cold snap, test my comfort level in various sleeping bags and insulation layers, and even check temps on training runs/walks during hot summer days.

This is GREAT gear that has changed the way I hike and train. It is small enough that you’ll never leave home without it and useful enough that you won’t want to. I highly recommend it.

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