Rustavi, Kvemo Kartli, Georgia

Frost dates for Rustavi

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

3 April

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

Median first autumn frost

15 November

The far end of the outdoor season.

Frost-free season

226 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 18 Mar 3 Apr 14 Apr 8 Mar 29 Apr
First of autumn 3 Nov 15 Nov 1 Dec 26 Oct 14 Dec
Frost-free days 258 226 203 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 27 Feb 22 Mar 7 Apr 2 Feb 14 Apr
First of autumn 10 Nov 29 Nov 16 Dec 27 Oct 25 Dec
Frost-free days 293 253 217 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 4 Feb 28 Feb 26 Mar 11 Jan 6 Apr
First of autumn 23 Nov 16 Dec 23 Dec 8 Nov 27 Dec
Frost-free days 322 291 242 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 -2.6°C 6.8°C 26.6
February -1.9°C 9.2°C 20.8
March 1°C 13.6°C 11.8
April 6°C 19.6°C 1.4
May 11°C 24.4°C 0
June 15.9°C 29.5°C 0
July 19°C 32.9°C 0
August 19°C 33°C 0
September 14.4°C 27.2°C 0
October 8.9°C 20.4°C 0.2
November 3.1°C 13.7°C 5.7
December -1.1°C 8.4°C 20

Turn these dates into a planting calendar →

Nearby

Compare with places close by

Tbilisi Zone 8b 19 km Last frost 3 Apr First 15 Nov Vanadzor Zone 7a 93 km Last frost 6 May First 13 Oct Gyumri Zone 6a 128 km Last frost 25 May First 4 Oct Abovyan Zone 6a 146 km Last frost 16 May First 9 Oct Ganja Zone 8a 152 km Last frost 13 Apr First 9 Nov Yerevan Zone 8a 159 km Last frost 5 Apr First 11 Nov Vladikavkaz Zone 7a 166 km Last frost 24 Apr First 19 Oct Nazran Zone 7a 186 km Last frost 24 Apr First 22 Oct

Seasonal context

Rainfall and the growing season in Rustavi

May has the highest average precipitation (58 mm); February has the lowest (17 mm). Compare this pattern with the planting windows and your water supply.

Jan 18 mm
Feb 17 mm
Mar 28 mm
Apr 49 mm
May 58 mm
Jun 49 mm
Jul 27 mm
Aug 27 mm
Sep 25 mm
Oct 38 mm
Nov 25 mm
Dec 17 mm

During wetter months, check that beds and containers drain after heavy rain. During drier months, plan how you will keep seeds and new transplants watered. Monthly averages can hide long dry spells and intense storms; they do not show soil moisture, humidity or this week's weather.

Source: NASA POWER, corrected MERRA-2 precipitation, 2001–2020. Values are approximate monthly totals, including the water equivalent of snow, from the nearest 0.5° × 0.625° grid cell. This reference period differs from the temperature record. Rainfall provides context and does not change the calculated planting dates. Method and limitations.

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