Bazhong, Sichuan, China

Frost dates for Bazhong

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

4 March

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

Median first autumn frost

1 December

The far end of the outdoor season.

Frost-free season

273 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	13 Feb	4 Mar	17 Mar	26 Jan	11 Apr
First of autumn	16 Nov	1 Dec	6 Dec	13 Nov	14 Dec
Frost-free days	297	273	244	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	23 Jan	11 Feb	9 Mar	7 Jan	21 Mar
First of autumn	28 Nov	9 Dec	21 Dec	17 Nov	27 Dec
Frost-free days	331	301	264	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	6 Jan	24 Jan	1 Feb	2 Jan	24 Feb
First of autumn	10 Dec	23 Dec	30 Dec	17 Nov	1 Jan
Frost-free days	358	333	312	9 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	-0.9°C	8.1°C	21.6
February	1.3°C	10.8°C	10.6
March	5.7°C	16.2°C	1.3
April	10.6°C	21.8°C	0
May	14.9°C	25.9°C	0
June	18.8°C	29.4°C	0
July	21.7°C	31.1°C	0
August	21.1°C	30.7°C	0
September	16.9°C	26.3°C	0
October	11.4°C	20.6°C	0
November	5.6°C	14.8°C	1.4
December	0.2°C	9.4°C	15.6

Turn these dates into a planting calendar →

Nearby

Compare with places close by

Dazhou Zone 9b 100 km Last frost 15 Feb First 10 Dec Nanchong Zone 9b 135 km Last frost 12 Feb First 12 Dec Hanzhong Zone 8b 137 km Last frost 13 Mar First 24 Nov Wanzhou Zone 9b 199 km Last frost 18 Feb First 9 Dec Mianyang Zone 9a 200 km Last frost 25 Feb First 7 Dec