Bitlis, Bitlis, Turkey

Frost dates for Bitlis

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

24 April

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

Median first autumn frost

31 October

The far end of the outdoor season.

Frost-free season

191 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 14 Apr 24 Apr 7 May 30 Mar 21 May
First of autumn 20 Oct 31 Oct 15 Nov 7 Oct 24 Nov
Frost-free days 215 191 166 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 28 Mar 9 Apr 25 Apr 18 Mar 5 May
First of autumn 26 Oct 9 Nov 26 Nov 21 Oct 2 Dec
Frost-free days 243 214 184 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 9 Mar 29 Mar 13 Apr 19 Feb 25 Apr
First of autumn 7 Nov 29 Nov 13 Dec 30 Oct 30 Dec
Frost-free days 279 246 208 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

Jan Mar Apr Jul Sep Oct Dec
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

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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 -9.1°C -0.5°C 30.7
February -7.5°C 1.1°C 27.3
March -2.3°C 6.1°C 22.7
April 2.4°C 12.4°C 6.9
May 7°C 18.2°C 0.2
June 11.9°C 26.2°C 0
July 16.1°C 32.3°C 0
August 16.7°C 32.3°C 0
September 12.1°C 26.3°C 0
October 6.4°C 18.1°C 1.7
November -0.4°C 9.6°C 15.6
December -5.6°C 2.8°C 28.2

Turn these dates into a planting calendar →

Nearby

Compare with places close by

Tatvan Zone 6a 18 km Last frost 14 Apr First 5 Nov Ahlat Zone 6a 50 km Last frost 14 Apr First 5 Nov Siirt Zone 7b 54 km Last frost 26 Mar First 30 Nov Muş Zone 6b 65 km Last frost 14 Apr First 5 Nov Adilcevaz Zone 5b 70 km Last frost 28 Apr First 23 Oct Silvan Zone 8a 100 km Last frost 26 Mar First 30 Nov Batman Zone 8a 103 km Last frost 26 Mar First 30 Nov Şırnak Zone 8a 103 km Last frost 29 Mar First 29 Nov

Seasonal context

Rainfall and the growing season in Bitlis

April has the highest average precipitation (88 mm); August has the lowest (3 mm). Compare this pattern with the planting windows and your water supply.

Jan 83 mm
Feb 83 mm
Mar 88 mm
Apr 88 mm
May 58 mm
Jun 16 mm
Jul 6 mm
Aug 3 mm
Sep 11 mm
Oct 56 mm
Nov 62 mm
Dec 84 mm

During wetter months, check that beds and containers drain after heavy rain. During drier months, plan how you will keep seeds and new transplants watered. Monthly averages can hide long dry spells and intense storms; they do not show soil moisture, humidity or this week's weather.

Source: NASA POWER, corrected MERRA-2 precipitation, 2001–2020. Values are approximate monthly totals, including the water equivalent of snow, from the nearest 0.5° × 0.625° grid cell. This reference period differs from the temperature record. Rainfall provides context and does not change the calculated planting dates. Method and limitations.

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