Mexico City, Mexico City, Mexico

Frost dates for Mexico City

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

9 February

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

Median first autumn frost

17 November

The far end of the outdoor season.

Frost-free season

281 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	9 Jan	9 Feb	6 Mar	3 Jan	12 Mar
First of autumn	25 Oct	17 Nov	21 Dec	18 Oct	25 Dec
Frost-free days	347	281	233	7 of 30 years saw none at all

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	8 Jan	19 Jan	25 Feb	3 Jan	3 Mar
First of autumn	2 Nov	2 Dec	22 Dec	26 Oct	26 Dec
Frost-free days	348	317	251	18 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	—	—	—	—	—
First of autumn	—	—	—	—	—
Frost-free days	—	—	—	30 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	4°C	19.3°C	1.3
February	5°C	21.7°C	0.7
March	6.5°C	24°C	0.2
April	8.6°C	25.9°C	0
May	10.1°C	26°C	0
June	10.5°C	23.5°C	0
July	10°C	21.5°C	0
August	10°C	21.1°C	0
September	9.7°C	20.3°C	0
October	7.8°C	20°C	0.3
November	5.9°C	19.6°C	0.8
December	4.6°C	19.2°C	0.8

Turn these dates into a planting calendar →

Nearby

Compare with places close by

Gustavo Adolfo Madero Zone 9b 7 km Last frost 9 Feb First 17 Nov Iztapalapa Zone 9b 11 km Last frost 9 Feb First 17 Nov Ciudad Nezahualcoyotl Zone 9b 12 km Last frost 9 Feb First 17 Nov Ecatepec de Morelos Zone 9b 21 km Last frost 9 Feb First 17 Nov Puebla Zone 10b 105 km Last frost 15 Jan First 22 Nov Santiago de Querétaro Zone 10a 184 km Last frost 28 Jan First 5 Dec