We are in the beggining stages of planning a Lake Powell houseboat trip next fall. We are thinking about, either the last week of Sept or mid to late Oct. What are the differences between daytime, nighttime and water temps? I've read the average low in Oct is 40ish degrees. Is that accurate? And if yes, do the houseboat rentals have a heater? Cause that's pretty chilly.
Please let me know what you think. Thanks!