Chengdu, Sichuan, China

Frost dates for Chengdu

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

14 February

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

Median first autumn frost

10 December

The far end of the outdoor season.

Frost-free season

300 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 Jan	14 Feb	6 Mar	19 Jan	14 Mar
First of autumn	27 Nov	10 Dec	19 Dec	17 Nov	27 Dec
Frost-free days	331	300	266	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	7 Jan	25 Jan	12 Feb	6 Jan	26 Feb
First of autumn	13 Dec	21 Dec	28 Dec	9 Dec	31 Dec
Frost-free days	355	330	304	4 of 30 years saw none at all

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	25 Jan	27 Jan	29 Jan	24 Jan	30 Jan
First of autumn	18 Dec	24 Dec	30 Dec	16 Dec	1 Jan
Frost-free days	340	331	322	26 of 30 years saw none at all

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	0.8°C	11.6°C	12.1
February	3.1°C	14.8°C	3.7
March	8.1°C	20.4°C	0.1
April	13.2°C	26°C	0
May	17.5°C	29.8°C	0
June	21°C	32.4°C	0
July	23.2°C	32.7°C	0
August	22.5°C	31.5°C	0
September	18.8°C	27.9°C	0
October	13.7°C	23°C	0
November	8°C	18°C	0.3
December	2.2°C	12.5°C	6.1

Turn these dates into a planting calendar →

Nearby

Compare with places close by

Meishan Zone 9b 73 km Last frost 5 Feb First 16 Dec Ziyang Zone 9b 82 km Last frost 7 Feb First 17 Dec Mianyang Zone 9a 107 km Last frost 25 Feb First 7 Dec Neijiang Zone 9b 154 km Last frost 3 Feb First 18 Dec Zigong Zone 9b 162 km Last frost 3 Feb First 18 Dec Nanchong Zone 9b 193 km Last frost 12 Feb First 12 Dec Luzhou Zone 9b 237 km Last frost 28 Jan First 19 Dec