Need advice and thoughts

So the first week of December I am spending the week in Denver as my boyfriend has job training and the hotel we’re staying at has an outdoor heated pool and I was wondering if it would be too cold outside (probably 40s or 50s outside) to take my daughter who would be 2 months old at the time in the pool. Just trying to think of stuff to keep us entertained while my boyfriend is at work. Or if anyone has any ideas on things we can do our hotel is in Lakewood