yes, most are calibrated to 60F. I recommend getting a refractometer for preboil OG and checking gravity during the boil, as you only need a few drops of wort to get a reading. Check your gravity at preboil once it starts boiling as well as about halfway through. If you're not where you need to be gravity wise, you can make boil intensity adjustments and/or get some DME to compensate for an expected missed lower gravity if you so choose. With a hydrometer this is difficult to do because you have to wait for the wort to cool down before taking the reading, which takes awhile and in these situations you're more looking for on the fly data.
If you get your Beersmith set up properly and do everything the same each time as far as your steps and volumes, you'll notice you'll become incredibly consistent with your numbers and won't have to worry about these things as often, but it takes awhile when you're new.
