If you planning to travel to Gates of the Mountains Marina, Helena, Montana, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 3:13 PM. The temperature feels like 8.85 with a humidity level of 76 so dress accordingly. Cloud coverage is 91 percent with visibility at 5 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling east at a speed of 5 MPH. At the end of the day don’t miss the sunset at 11:53 PM.