Lhoka, Tibet, China

Frost dates for Lhoka

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

11 June

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

Median first autumn frost

26 August

The far end of the outdoor season.

Frost-free season

77 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	31 May	11 Jun	20 Jun	25 May	10 Jul
First of autumn	29 Jul	26 Aug	7 Sep	22 Jul	14 Sep
Frost-free days	99	77	39	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	17 May	30 May	7 Jun	9 May	19 Jun
First of autumn	4 Sep	24 Sep	8 Oct	20 Aug	13 Oct
Frost-free days	144	117	89	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 May	13 May	28 May	29 Apr	4 Jun
First of autumn	22 Sep	8 Oct	16 Oct	17 Sep	20 Oct
Frost-free days	165	148	117	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	-15.2°C	-0.2°C	31
February	-12.6°C	1.6°C	28.3
March	-7.5°C	5.3°C	31
April	-5.3°C	9.5°C	30
May	-2°C	14°C	25.1
June	1.8°C	17.5°C	4
July	2.8°C	16.9°C	0.3
August	2.2°C	16°C	1.5
September	0.2°C	14.4°C	12.4
October	-4.3°C	10.5°C	29.7
November	-7.7°C	5.2°C	30
December	-12.7°C	1.8°C	31

Turn these dates into a planting calendar →