Taylor makes one that is for indoor or outdoor use, has 24 hour max/min function and costs about $30. The accuracy of most units less than $100 is +/-2ºF. Over $100, you can get a Testo or Oakton that has accuracy of +/- 0.5ºF. Pay more and you can get a certificate of calibration, NIST traceable. Taylor is my favorite brand of glass or digital thermometers.
These are not wireless units. Meter and sensors are suitable for use outdoors.