Want more night-shooting experience? The Lights at the Denver Zoo runs from Dec. 6th to Jan. 5th, 5:30 PM to 9:00 PM. Admission (ages 12-64) $12, 65+ $10. http://denverzoo.org/zoolights/
I've checked the weather forecast and next weekend is predicted to be very warm. Friday, December 27th is forecasted to have a high of 58 and a low of 38 degrees. Also, I called guest services and they DO allow tripods for the Zoo Lights. So, decent weather (hopefully, this is Colorado, after all!), great light show, a fun place to shoot and near downtown, with plenty of free parking.
Note that you can't go earlier, they clear the grounds at 5:PM and re-open for the lights at 5:30PM.
sorry about the short notice, but this show only runs for another few days.