When is the last frost in Saint Augustine, FL?

The average last spring frost date in Saint Augustine, FL is Feb 28. This is when it is generally safe to plant frost-sensitive vegetables and flowers outdoors.

When is the first frost in Saint Augustine, FL?

The average first fall frost date in Saint Augustine, FL is Dec 13. Plan to harvest frost-sensitive crops before this date.

How long is the growing season in Saint Augustine, FL?

The growing season in Saint Augustine, FL is approximately 287 days, measured from the last spring frost to the first fall frost.

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Frost Dates for Saint Augustine, FL

Location Saint Augustine, FL

Frost Dates

Saint Augustine, FL

See the average dates of the last frost of spring and the first frost of fall for your location across the U.S. and Canada.

Nearest Climate Station	Altitude	Last Spring Frost	First Fall Frost	Growing Season
HASTINGS 4NE, FL	9'	Feb 28	Dec 13	287 days

Last and first frost dates are 30% probability. Calculated using 1991-2020 Climate Normals from NOAA.

Our frost dates are based on 1991–2020 climate data from the National Oceanic and Atmospheric Administration (NOAA). We use a 30% probability threshold, meaning there’s about a 3 in 10 chance frost will occur before or after the given date. Because microclimates vary—your backyard might be warmer or cooler than nearby towns—use these dates as a flexible guide, not a guarantee.