For more information call 1.800.235.5259. What to Wear Since you will be walking on campus for close to 2 hours, the most important thing to wear on your campus tour are comfortable walking shoes. For tips on the rest of your outfit, pick the season you'll be visiting and make a note of the weather Cal Poly Pomona typically experiences. Winters are mild with days averaging 60 to 75 degrees Fahrenheit and nights about 20 degrees Fahrenheit cooler. The average annual rainfall is just 14 inches and most of it occurs November to March.
Late spring is cool and frequently overcast until mid-day.
Summer days might begin cloudy, but the skies usually clear before noon. Early Summer weather is comfortable, ranging from the low 80s in the daytime to the low 60s at night. The warmest months of the year can be August through November, when the hot, dry Santa Ana desert winds periodically blow in from the east. Temperatures in July, August and September can range from the high 90s in the daytime to the low 70s at night. Even though a few 90-degree days may pop up, it usually begins to cool off in October and November when temperatures return to low 80s in the daytime and the low 60s at night.