If the skies are turning a dark shade of gray, why not spend the day at Monrovia Historical Museum? You'll be surprised just how much you can learn about the past here.
You'll find this collection of historical artifacts in Monrovia. Once you've seen all you can at Monrovia Historical Museum, have a look at nearby Santa Anita Park, Azusa Pacific University, and Los Angeles Arboretum and Botanic Gardens.