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Weather Instruments

Top Picks

How we choose: The best weather instruments highlighted here were selected based on 16 reviews of 10 products. Our top picks are those that are readily-available in the United States and have received the highest overall ratings from reviewers.

How we test: Trailspace is powered entirely by our community of readers. The reviews posted here reflect the real-world experiences of outdoor enthusiasts just like you.

If you've used a weather instrument that you think should be listed here, please share your experience.

Disclosure: Trailspace never accepts payment for gear reviews, product placement, or editorial coverage. When you buy through affiliate links on our site, Trailspace may earn a small commission, which helps cover the costs of running the site.

Kestrel DROP D2

user rating: 3.5 of 5 (1 review)

The Kestrel Drop 2 Datalogger is a tiny sensor that links with your iPad or iPhone to provide environmental measurements remotely. It is handy for checking the temperature when you are comfortable inside your tent or snow shelter and sleeping bag or for monitoring fresh food you carry for the first few days of a backpacking trip.

Reasons to Buy

  • Small and light (1-1/8 oz / 35 gm)
  • Long battery life
  • Provides temperature, humidity, heat stress index, dew point both currently and historically
  • Waterproof and drop-proof (can be immersed to measure water temperature)

Reasons to Avoid

  • Expensive (list $149)
  • Requires carrying an iOS6 or later iPad, iPhone, or certain other iOS devices to get readouts
  • No app version for Android devices
  • Drop is small enough to easily get lost

Background: Have you ever been nice and cozy inside your tent and wondered what temperature awaited you outside your tent? Or, on the other hand, been roasting inside your tent on a humid summer’s day and wondered whether exiting the tent would put you in cool air or still have you roasting? Have you wanted to pack some fresh food that had to be kept cool to have the first couple of days on the trail, but worried that it might get too warm and spoil? Some of my friends have bought inside/outside electronic thermometers intended for automobiles, usually finding out that the batteries ran down quickly or that they gave very wrong temperatures, besides having long wires that got tangled in everything.

Read more: Kestrel DROP D2 review (1)

Garmin Tempe

user rating: 4.5 of 5 (2 reviews)

Excellent weather instrument for all users of wireless-capable Garmin units.

Reasons to Buy

  • Accurately measures temperature and transmits to Garmin unit
  • Very small size, may be securely attached anywhere
  • Quite wide temperature range
  • Good data transmission range
  • Ability to view temperature graphs on PC
  • No buttons or other controls, automatic reconnection to Garmin unit

Reasons to Avoid

  • Glitches below -20°C (-4 °F)
  • Not enough support by Android apps

I've been using this sensor since its appearance in 2012 with my Garmin GPSMap 62s and now I continue using it with GPSMap 64s (see my review). I remember that in 2012 it was like a dream come true—wireless temperature sensor with log recording and making the graphs in Garmin Basecamp on PC! My temperature-equipped bike computer was very nice, but ability to record the data to track and review it later was amazing. Here are its official specs from Garmin support: The unit is water resistant to 32.9 ft (10 meters).

Read more: Garmin Tempe reviews (2)

ThermoWorks ThermoDrop

user rating: 4.5 of 5 (1 review)

The ThermoDrop is a key-chain or zipper-pull digital thermometer that's useful for gathering temperature data in the backcountry. Such statistics help me in better understanding my tolerances and gear needs. It's also fun for bragging rights/telling stories about my backcountry adventures.

Reasons to Buy

  • Records daily min & max temps
  • Small
  • "Relatively" inexpensive
  • Lightweight at 0.5 oz
  • Easily attaches to things
  • Easy-to-read digital display, rotates and has a backlight
  • Wide temp tolerance
  • IP67 weather resistant
  • Helps a hiker better understand their needs for gear and clothing.

Reasons to Avoid

  • Can buy a simple mercury thermometer for much less.
  • It takes a minute or so to adjust.
  • Sensor can be affected by body heat or being directly in the sun.
  • Only a few places to purchase online.
  • Don't really need it...fun for gear geeks like me.

Background: I'm fond of factual and actual numbers when it comes to backpacking. There's just so much that's subjective and tailored to individual needs and perspectives, especially when it comes to temperature ratings and ranges. There have been many times when I felt exceptionally cold or hot but wondered, were the ambient temperatures really that extreme? Wouldn't it be helpful to know the exact temperature at any given time or how cold it really got overnight? There are watches and phones that claim to be able to record temperatures, but I never trusted the readings.

Read more: ThermoWorks ThermoDrop review (1)

Oregon Scientific Handheld Weather Forecaster with Alarm Clock

user rating: 4.5 of 5 (1 review)
discontinued

My portable weather heads-up.

Reasons to Buy

  • Very accurate
  • Lightweight
  • Dual purpose clip
  • Illuminator display (very cool)

Reasons to Avoid

  • Uses 2xCR2032 batteries that drain fast
  • Can give false humidity readings when wet

One of those things that never left my hip belt since I bought it. Accuracy. What is a weather station if it's not accurate? Fortunately this little guy's maximum deviation is 0.3 Celsius and 4% humidity compared to a traditional mercury thermometer. So it's super accurate in by book! And I tried a lot of weather stations over the years (although not a single portable one) for home usage and none delivered that accuracy. You also get alarm clock with snooze function, date, moon phase, day display? (I don't know how to write this down so..), weather trend depending on how fast temperature/humidity shifts and last but not least illuminator function with high contrast when the batteries are good (very handy inside a freezing tent at night).Also...

Read more: Oregon Scientific Handheld Weather Forecaster with Alarm Clock review (1)

More Reviews of Weather Instruments

Trailspace reviewers have shared 16 reviews of 10 different weather instruments.

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