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Last Frost Day
Last Frost Day — Last and First Frost Dates by ZIP Code, with Odds
About Last Frost Day
Look up your last spring and first fall frost dates by ZIP code, with real probabilities from NOAA 1991 to 2020 Climate Normals, plus your USDA hardiness zone.
- Who it is for
- Home gardeners, allotment growers and small-scale growers in the US who need to know when it is safe to plant or when to protect plants from frost.
- Problem it solves
- Most frost-date sites give a single average date, which frost still beats in about half of all years, so gardeners plant too early or harvest too late.
- The solution
- Shows the full range of probabilities from NOAA's official climate data, so you can decide how much risk you want to take with your tomatoes.
- What makes it unique
- Instead of one average date it shows the odds of frost after each spring date and before each fall date, using NOAA 1991-2020 Climate Normals for the nearest station, plus the USDA hardiness zone. Free, no account needed.
Features
Frost dates by ZIP code
Enter a U.S. ZIP code to see when the last spring frost and first fall frost usually happen near you.
NOAA 1991 to 2020 Climate Normals
Frost dates come from the weather station nearest your ZIP code.
Details
- Platforms
- Web
- Pricing
- Free
- Built for
Home gardeners, allotment growers and small-scale growers in the US who need to know when it is safe to plant or when to protect plants from frost.
- Building since
2026
Technology
Last Frost Day screenshot showing information about a zip code
1 / 1Website performance
Recorded mobile lab measurements and finalized weekly standings from IndieTools Speed.
89GoodMobile Lighthouse
Measured · UTC
- Load time
- 1.00 s
- FCP
- 792 ms
- LCP
- 1.92 s
- CLS
- 0.000
- TTFB
- 1 ms
- TBT
- 428 ms
- Speed index
- 792 ms
These stored lab observations describe controlled test runs. They are not real-user Core Web Vitals or a guarantee of search rankings. Weekly standings below remain attached to their finalized edition.
- Overall rank
- Not finalized
- Best overall rank
- Not finalized
- 0 top 10 finishes
- Best category rank
- Not finalized
- 0 category wins
- Latest change
- -10 score
- No finalized score yet
Method: psi-mobile-two-sample-mean-v1 · 2 samples per reading. Only readings with the same recorded method and sample count share a chart. Lab results can vary between runs.
Website performance history
Inspect every successful mobile Lighthouse lab measurement by metric and date range.
Range
Metric
Latest score
89 / 100
Higher is better
2 measurements
Use the left and right arrow keys to inspect measurements. Use Home or End to jump to the first or last measurement. Press Escape to dismiss the chart tooltip.
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