Wuhan, Hubei, China

Frost dates for Wuhan

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

21 February

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

Median first autumn frost

7 December

The far end of the outdoor season.

Frost-free season

289 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	8 Feb	21 Feb	10 Mar	27 Jan	21 Mar
First of autumn	23 Nov	7 Dec	15 Dec	13 Nov	31 Dec
Frost-free days	310	289	258	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	24 Jan	6 Feb	26 Feb	9 Jan	13 Mar
First of autumn	4 Dec	17 Dec	26 Dec	17 Nov	30 Dec
Frost-free days	336	314	281	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	13 Jan	25 Jan	14 Feb	1 Jan	25 Feb
First of autumn	20 Dec	28 Dec	31 Dec	16 Dec	31 Dec
Frost-free days	352	337	309	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	0.4°C	9.3°C	14.2
February	2.9°C	12.1°C	6.9
March	7.6°C	17.3°C	0.6
April	13.2°C	23°C	0
May	18.3°C	27.4°C	0
June	22.8°C	30.3°C	0
July	26°C	32.3°C	0
August	25.5°C	32.7°C	0
September	21.1°C	30.1°C	0
October	14.8°C	24.4°C	0
November	8.2°C	17.8°C	0.7
December	2°C	11.3°C	8.4

Turn these dates into a planting calendar →

Nearby

Compare with places close by

Xiaogan Zone 8b 50 km Last frost 5 Mar First 30 Nov Xinyang Zone 8b 172 km Last frost 14 Mar First 23 Nov Yueyang Zone 9a 176 km Last frost 22 Feb First 2 Dec Jiujiang Zone 9a 193 km Last frost 23 Feb First 8 Dec Jingzhou Zone 9a 201 km Last frost 28 Feb First 1 Dec Lu’an Zone 8a 250 km Last frost 14 Mar First 24 Nov