If the forecast is looking grim, why not spend the day at Ethnographic Museum in Ochla? You'll be surprised just how much you can learn about the past here.
Situated in Zielona Gora, this collection of historical artifacts is worth including in your schedule. But you'll find lots more to check out in the area. Zielona Góra Palm House, University of Zielona Gora, and Wilkanowska Mountain are within close reach of Ethnographic Museum in Ochla.