This one works well for both temp and humidity... $12 and I get similar readings with my accurites and temp gun

http://www.reptilebasics.com/thermometers/TH-100/


Large, easy to read .75" tall LCD numerals
Resettable MIN/MAX display for Temperature and Relative Humidity
F° or C° operation
48" remote probe wire- Temperature and Relative Humidity in a single probe!
Measuring Range: Temperature -58°F to 158°F Relative Humidity 10%Rh - 99%Rh
Accuracy: Temperature +/- 1.8°F or +/- 1°C Relative Humidty +/- 5%
Display Resolution: Temperature 0.2°F / 0.1°C Relative Humidty 1%
Battery: AG10 Watch Battery(Included)