UCM Weather

Weather and Climate at UCM

The University of California Merced experiences a Mediterranean climate with hot, dry summers and mild, wet winters. The campus is located in the San Joaquin Valley, where:

• Summer temperatures often exceed 90°F (32°C), with occasional heatwaves reaching over 100°F (38°C).
• Winter temperatures typically range from 40°F (4°C) to 60°F (16°C), with occasional frost.
• Rainfall is mostly concentrated from November to March, averaging about 13 inches (330 mm) annually.
• Extreme weather can include occasional fog in winter and rare thunderstorms.

The weather impacts commuting with potential delays during heavy rain, and influences campus life by encouraging indoor activities during the hottest months. Outdoor research may be scheduled to avoid peak heat times.