Kolomna, Moscow Oblast, Russia

Frost dates for Kolomna

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 May

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

Median first autumn frost

7 October

The far end of the outdoor season.

Frost-free season

157 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	22 Apr	3 May	18 May	15 Apr	25 May
First of autumn	23 Sep	7 Oct	16 Oct	17 Sep	19 Oct
Frost-free days	177	157	128	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	10 Apr	25 Apr	9 May	4 Apr	18 May
First of autumn	3 Oct	16 Oct	26 Oct	24 Sep	12 Nov
Frost-free days	200	174	147	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	29 Mar	7 Apr	23 Apr	20 Mar	5 May
First of autumn	16 Oct	30 Oct	14 Nov	30 Sep	19 Nov
Frost-free days	230	207	176	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

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

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	-14.2°C	-7.7°C	30.9
February	-13.2°C	-5.6°C	28.1
March	-7.9°C	-0.3°C	29.7
April	0.3°C	10°C	15.1
May	7°C	17.7°C	1.9
June	11.7°C	21.4°C	0
July	14.4°C	23.8°C	0
August	12.8°C	22.8°C	0
September	7.4°C	16.7°C	0.9
October	1.6°C	8.7°C	11.7
November	-4.8°C	0.2°C	24.8
December	-11.1°C	-5.4°C	30.1

Turn these dates into a planting calendar →

Nearby

Compare with places close by

Ryazan’ Zone 4b 77 km Last frost 1 May First 5 Oct Elektrostal’ Zone 4b 82 km Last frost 4 May First 6 Oct Podolsk Zone 4b 87 km Last frost 2 May First 6 Oct Lyubertsy Zone 4b 88 km Last frost 3 May First 7 Oct Serpukhov Zone 4b 89 km Last frost 1 May First 7 Oct Zheleznodorozhnyy Zone 4b 89 km Last frost 3 May First 7 Oct Balashikha Zone 4b 96 km Last frost 3 May First 6 Oct Moscow Zone 4b 106 km Last frost 2 May First 7 Oct