Sorry about the weather...
Local weather forecast here: http://pent.no/forecast/Lysebotn;59.05560;6.65044
Just enter the place in the box "Søk etter sted" (search for location) and pick the one you're looking for.
It'll show you the forecast from both the major weather companies; YR.no is the government run site who gives your the forecast on NRK tv and Storm is a private company that has the weather for the other national broadcaster; TV2.
If both predict the same you'll know, otherwise you'll just have to choose which one to believe
Be careful in roundabouts and turns in general around gas stations, many trucks usually spill quite alot of diesel right after they've filled up and it's slippery as fuck when it rains. Also watch for buses and trucks in the hairpins and switchbacks. You'll lose. Every time.