Tianjin, Tianjin, China

Frost dates for Tianjin

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

7 April

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

Median first autumn frost

30 October

The far end of the outdoor season.

Frost-free season

207 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	27 Mar	7 Apr	13 Apr	20 Mar	27 Apr
First of autumn	21 Oct	30 Oct	10 Nov	14 Oct	13 Nov
Frost-free days	228	207	190	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	15 Mar	26 Mar	5 Apr	12 Mar	13 Apr
First of autumn	31 Oct	10 Nov	17 Nov	27 Oct	21 Nov
Frost-free days	247	229	209	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	2 Mar	11 Mar	24 Mar	20 Feb	3 Apr
First of autumn	7 Nov	15 Nov	27 Nov	28 Oct	4 Dec
Frost-free days	270	249	227	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	-8.9°C	1.7°C	31
February	-5.5°C	5.8°C	27.8
March	-1°C	13.9°C	20.3
April	6.2°C	22.2°C	1.8
May	13.2°C	29.1°C	0
June	19.1°C	33.2°C	0
July	22.2°C	33.4°C	0
August	20.9°C	31.6°C	0
September	15.2°C	28°C	0
October	7.1°C	20.4°C	1.2
November	-0.8°C	10.9°C	18.5
December	-6.7°C	3.2°C	30.8

Turn these dates into a planting calendar →

Nearby

Compare with places close by

Sanhe Zone 7a 94 km Last frost 8 Apr First 27 Oct Tangshan Zone 7a 103 km Last frost 8 Apr First 26 Oct Beijing Zone 7a 108 km Last frost 8 Apr First 27 Oct Baoding Zone 7a 151 km Last frost 1 Apr First 7 Nov Dongying Zone 7b 219 km Last frost 3 Apr First 13 Nov