FYI, for today only (while supplies last), Woot's 'sellout' site has a wireless thermometer that some folks may find useful @ $9.99 + $5 shipping.  You can order up to three of them and shipping remains $5, so ... for 2 you're looking at $24.98 shipped, and 3 will set you back $34.97.

The remote wireless temp sensor can transmit up to 100' with no obstacles, so it could be ideal to keep he base station in the house and the remote temp sensor in, for example, your greenhouse or near your plants outside to monitor temps around the pots for heat/freeze.  Runs on batteries but also has solar cells to extend battery life.  The outdoor sensor is good from -4 degrees Fahrenheit to 140 degrees Fahrenheit (-20 degrees Celsius to 60 degrees Celsius). 

I've done plenty of business at Woot (50+ purchases over the years), solid company to do business with.  Easy to get addicted to checking their other sites (woot.com and deals.woot.com) every day.

Anyways ... I'm buying two to add to my current thermometer setup, thought I'd share.

Thanks for sharing, going to the site now to see if any are left!

I checked as of ~5 minutes ago and they still had some left.  Until the "I want one" icon starts bouncing, they're high on supply.

Sales stop at 1PM EST (4 hours away).

I could tape one to my little dog and let her run around outside, then I'd know how cold it was.

I would pay good money to see a video of that.

Some years back i bought a outdoor themometer to hang in my garage and check winter temps where my trees are stored.
Thats season it went down to 23 below zero outdoors and hovered in the 6 to 8 degree rang in garage.
I kept looking at that dang thing worrying about my plants the ypoungest at the time at about 3 seasons old and cardboard sleeved, the elders i just placed old bedsheet on them if mem serves me right.
In short it worried me .

Now i dont look at it anymore the heck with it. lol
Outdoors i can look online. plus feel it as i clean the snow.  lol