Moreno Valley experiences a hot-summer Mediterranean climate (Köppen climate classification *Csa*), which borders on a semi-arid climate (*BSk*). The region is known for its abundant sunshine, averaging over 270 sunny days per year.
* **Temperatures:** Summers are typically hot and dry, with average high temperatures in July and August frequently exceeding 95°F (35°C), occasionally surpassing 100°F (38°C). Winters are mild and comfortable, with daytime highs around 65°F (18°C) and nighttime lows dropping to the low 40s (5°C). * **Precipitation:** The city averages roughly 10 to 12 inches (250-300 mm) of rain annually. The vast majority of precipitation falls during the winter and early spring months. Snowfall is exceedingly rare on the valley floor, though the neighboring mountains may receive light dustings. * **Natural Disasters:** The area is susceptible to seasonal wildfires, particularly in the foothills during the dry, windy autumn months (Santa Ana winds). Like all of Southern California, it is also situated in a seismically active zone. * **Best Time to Visit:** Spring (March to May) and Autumn (October to November) offer the most pleasant weather for outdoor activities.
