When is your last frost?
Enter your ZIP code for your average last spring frost, first fall frost, growing season and hardiness zone — plus a planting calendar that tells you exactly when to start seeds and plant out.
Covers 40,932 ZIP codes using 7,245 NOAA weather stations.
Popular cities
- New York, NY Mar 30
- Los Angeles, CA rare frost
- Chicago, IL Apr 10
- Houston, TX Feb 2
- Phoenix, AZ Jan 5
- Philadelphia, PA Mar 30
- San Antonio, TX Feb 25
- San Diego, CA rare frost
- Dallas, TX Mar 2
- Austin, TX Feb 20
- Jacksonville, FL Feb 1
- Columbus, OH Apr 20
- Charlotte, NC Mar 30
- Indianapolis, IN Apr 20
- Seattle, WA Mar 13
- Denver, CO Apr 30
- Washington, DC Mar 29
- Boston, MA Apr 4
- Nashville, TN Apr 1
- Detroit, MI Apr 27
- Portland, OR Feb 25
- Las Vegas, NV Jan 24
- Louisville, KY Apr 3
- Baltimore, MD Mar 24
- Milwaukee, WI Apr 26
- Albuquerque, NM Apr 6
- Kansas City, MO Apr 4
- Atlanta, GA Mar 25
- Minneapolis, MN Apr 23
- Salt Lake City, UT Apr 25
- Boise, ID Apr 24
- Billings, MT May 4
- Portland, ME Apr 26
- Burlington, VT Apr 29
- Anchorage, AK May 28
- Des Moines, IA Apr 23
Planting guides
Why frost dates matter
Frost-tender plants such as tomatoes, peppers, beans and basil die at 32°F, while cool-season crops like peas, spinach and kale need to be planted before the last frost to mature before summer heat. Almost every seed packet's timing is written relative to your last frost date — "start indoors 6–8 weeks before last frost" — so it's the one number every gardener needs.
When Is the Last Frost uses the official NOAA 1991–2020 climate normals, the same 30-year averages meteorologists use, and shows the probability range, not just a single date.