San Diego is known for its picture-perfect weather, but Mother Nature has different plans this March. Instead of the usual dry and mild days, we’re looking at a stretch of cooler temperatures, cloudy skies, and increased rainfall over the coming weeks. If you’ve been planning beach days or outdoor hikes, you might need to grab a light jacket and an umbrella instead.
Cooler Days and Chilly Nights—What’s Happening?
This week’s forecast shows unseasonably cool temperatures, a big shift from the warm, sunny days we usually enjoy this time of year.
- Daytime highs will struggle to climb above 60°F (16°C), a noticeable drop from the usual mid-to-upper 60s.
- Nighttime lows could dip to 51°F (11°C), which might have you reaching for an extra blanket.
This cool-down is thanks to a series of Pacific storm systems making their way into Southern California, bringing much-needed moisture—but also some stormy surprises.
Rain is on the Way—How Much Will We Get?
If you thought San Diego’s “rainy season” was over, think again. March is shaping up to be wetter than expected, with over 13 days of potential rainfall. That’s more than 117 mm (4.6 inches) of rain expected throughout the month!
While we’re not talking about constant downpours, residents should be prepared for on-and-off showers, heavier rain at times, and even some isolated thunderstorms.
California’s Statewide Storm System—What It Means for Us
San Diego isn’t alone in this weather shift. A major storm system is sweeping across California, bringing rain to the coast, snow to the mountains, and relief to drought-stricken areas.
- For San Diego: Expect on-and-off rain, with heavier showers at times. Roads may get slick, so drivers should use caution.
- For the Mountains: Snowfall is expected at 4,000-5,000 feet, which means local mountains could see a fresh layer of white.
This rain is great for our water supply and local ecosystems, but it also means we need to be weather-aware and prepared.
How to Stay Safe and Comfortable
Here’s how to make the most of San Diego’s unexpected cool-down:
- Drive carefully in the rain – Wet roads can be slippery, so slow down and give yourself extra time.
- Dress in layers – Mornings and nights will be chilly, but the afternoons might still feel mild.
- Check the forecast before making outdoor plans – Some days will be drier than others!
- Secure outdoor items – Strong winds and rain can knock over patio furniture or decorations.
Final Thoughts
This rainy, cooler March is a reminder that even in sunny San Diego, weather can still surprise us. While it’s not the usual spring warmth we expect, it’s a great opportunity to enjoy cozy weather, catch up on indoor activities, and appreciate the much-needed rain.
Stay dry, stay warm, and stay tuned—we’ll keep you updated on any big changes ahead!