Fresno, CA Frost Dates
Average frost dates, USDA hardiness zone, and growing season length for Fresno, California.
Gardening in Fresno
Fresno sits in the heart of the most productive agricultural valley on earth, and home gardeners inherit those same phenomenal growing conditions. If you can't grow it in Fresno, it probably can't be grown.
Central Valley heat is the real deal — 100°F+ for weeks in summer. But the soil is deep, rich, and productive with irrigation. Your winter cool-season garden is the envy of the country, producing fresh vegetables while northern states are snowbound. The tule fog that blankets the valley in winter provides natural cooling for chill-hour crops like fruit trees.
Fresno's agricultural heritage isn't nostalgic — it's ongoing. The city is surrounded by working farms that produce almonds, grapes, citrus, and stone fruit. Home gardeners benefit from this proximity: local nurseries carry varieties specifically selected for Central Valley conditions, and the gardening knowledge base in Fresno runs generationally deep.
What This Means for Fresno Gardeners
The average last spring frost in Fresno is around February 20, and the average first fall frost arrives around November 20. That gives you approximately 273 frost-free days to work with.
273 days is a long, productive season that supports two full rounds of warm-season crops plus continuous cool-season production through your mild winter. Most frost-sensitive crops can be transplanted by February 20, giving them months to produce before fall. Your winter garden is the real advantage — growing fresh vegetables in December and January while northern gardeners browse seed catalogs.
These dates are based on NOAA 30-year Climate Normal data for the Fresno area. Your actual frost dates could shift 2-3 weeks in either direction in any given year. Learn more about our data sources.
What to Grow in Fresno
Fresno's 273-day growing season is generous — long enough for two full growing windows (spring and fall) with warm-season crops between them. You can grow the full range of vegetables, herbs, and flowers with proper timing. Focus on heat-tolerant varieties for midsummer and cool-season crops for extended fall harvests. Recommended starting points: tomatoes, peppers, beans, cucumbers, squash, garlic, kale, and sunflowers.
See the full California planting guide for all 40 plants: California Planting Calendar. Or enter your zip code for exact planting dates personalized to Fresno.
More About Zone 9A
Fresno is in USDA Hardiness Zone 9A, which means average annual extreme minimum temperatures between 20°F to 25°F. View the full Zone 9A planting guide.
See the complete planting calendar for California: California Planting Calendar.
Other Cities in California
Frequently Asked Questions
These dates are based on NOAA's 30-year Climate Normal data for the Fresno area. They represent historical averages, not predictions. In any given year, the actual last frost could be 2-3 weeks earlier or later. Microclimates within Fresno (urban heat islands, hilltops, low-lying valleys) can also shift your local frost dates by a week or more.
Cool-season crops go in 3-4 weeks before your last frost (February 20). Warm-season crops wait until 2 weeks after. You have time for a fall round too — plant cool-season crops again in late summer for harvest into autumn. Enter your zip code for exact dates.