Safe to Plant

Stuttgart, Baden-Wurttemberg, Germany

Frost dates for Stuttgart

The full distribution rather than a single date. Every figure below is a percentile of 30 years of daily minimum temperatures at this location, expressed as the date it fell on.

Median last spring frost

19 April

Half of years are later than this. Not a planting date.

Median first autumn frost

3 November

The far end of the outdoor season.

Frost-free season

199 days

Between those two dates in a median year.

Last and first frost by severity

Read a row as: in this fraction of years, the last frost of spring had already happened by this date. The 90% column is the cautious planting date; the 10% column is the gamble.

Light frost — nights at or below 0°C (32°F). Air temperature reaches freezing. Kills basil, beans and unhardened tomatoes; hardy crops shrug it off.
Frost 1 year in 10 Median 9 years in 10 Earliest Latest
Last of spring 8 Apr 19 Apr 30 Apr 31 Mar 15 May
First of autumn 15 Oct 3 Nov 17 Nov 28 Sep 30 Nov
Frost-free days 223 199 168 every year on record saw this
Moderate frost — nights at or below -2.2°C (28°F). Damages half-hardy plants and most blossom. This is the threshold that decides a fruit crop.
Frost 1 year in 10 Median 9 years in 10 Earliest Latest
Last of spring 25 Mar 9 Apr 21 Apr 24 Feb 29 Apr
First of autumn 22 Oct 14 Nov 1 Dec 15 Oct 21 Dec
Frost-free days 251 219 184 every year on record saw this
Hard frost — nights at or below -4.4°C (24.1°F). Ground freezes and even hardy crops check their growth. Effectively the end of the outdoor year.
Frost 1 year in 10 Median 9 years in 10 Earliest Latest
Last of spring 30 Jan 20 Mar 10 Apr 21 Jan 21 Apr
First of autumn 1 Nov 26 Nov 20 Dec 24 Oct 28 Dec
Frost-free days 324 251 205 every year on record saw this

Dates in the southern hemisphere are computed on a growing year that starts in July, which is why "last of spring" falls where it should rather than in the middle of the calendar.

Chance of frost, week by week

Jan Mar Apr Jul Sep Oct Dec
Chance of at least one air frost during each week of the year, measured across the full record. The flat stretch in the middle is your frost-free season.

Temperature through the year

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Mean monthly temperature across the record. Months shown in blue average at least one air frost.

Monthly means and average number of frost nights.
Month Mean low Mean high Frost nights
January -2.9°C 3.1°C 22.5
February -2°C 5.4°C 19
March 0.3°C 9.6°C 14.9
April 3.6°C 14.3°C 5.5
May 8.1°C 18.5°C 0.1
June 12°C 22.8°C 0
July 13.8°C 25.1°C 0
August 13.9°C 25.3°C 0
September 9.7°C 20.9°C 0
October 6.1°C 15.5°C 1.9
November 1.5°C 8.3°C 10.6
December -1.7°C 3.9°C 20.2

Turn these dates into a planting calendar →

Nearby

Compare with places close by

Karlsruhe Zone 8a 62 km Last frost 16 Apr First 8 Nov Mannheim Zone 8a 94 km Last frost 18 Apr First 6 Nov Strasbourg Zone 8a 107 km Last frost 15 Apr First 6 Nov Freiburg Zone 7a 131 km Last frost 30 Apr First 20 Oct Augsburg Zone 7b 135 km Last frost 20 Apr First 20 Oct Mainz Zone 8a 148 km Last frost 20 Apr First 7 Nov Frankfurt am Main Zone 8a 152 km Last frost 17 Apr First 7 Nov Nuremberg Zone 7b 157 km Last frost 23 Apr First 21 Oct