Manila climate

Manila Frost Dates and Growing Season

NOAA 1991-2020 normals for Manila, 0.3 km from Manila, elevation 6393 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Manila. A median date has an even chance of a later freeze in spring, or an earlier one in fall.

The last spring freeze typically comes around May 22 and the first fall freeze around September 29, a growing season of about 128 days.

Median at 36°F
last June 5, first September 20
Median at 32°F
last May 22, first September 29
Median at 28°F
last May 5, first October 11

Last freeze in spring

The chance of a later freeze than the date shown. At 10 percent, one spring in ten still freezes after the date; planting after the 10 percent date for 32°F is the cautious choice.

Threshold10%20%30%40%50%60%70%80%90%
36°FJun 21Jun 17Jun 12Jun 8Jun 5Jun 2May 30May 25May 19
32°FJun 11Jun 5May 31May 27May 22May 17May 13May 9May 4
28°FMay 27May 16May 12May 8May 5May 2Apr 29Apr 25Apr 21
24°FMay 10May 4Apr 30Apr 25Apr 22Apr 18Apr 13Apr 9Apr 4
20°FApr 30Apr 21Apr 14Apr 9Apr 6Apr 3Mar 31Mar 27Mar 18
16°FApr 21Apr 8Apr 2Mar 30Mar 27Mar 21Mar 15Mar 10Mar 5

First freeze in fall

The chance of an earlier freeze than the date shown. At 10 percent, one fall in ten freezes before the date.

Threshold10%20%30%40%50%60%70%80%90%
36°FSep 6Sep 11Sep 14Sep 17Sep 20Sep 23Sep 25Sep 27Oct 1
32°FSep 15Sep 21Sep 24Sep 27Sep 29Oct 1Oct 4Oct 8Oct 14
28°FSep 25Sep 30Oct 2Oct 6Oct 11Oct 14Oct 17Oct 20Oct 23
24°FOct 5Oct 12Oct 16Oct 19Oct 21Oct 23Oct 26Oct 30Nov 3
20°FOct 16Oct 21Oct 24Oct 27Oct 30Nov 1Nov 5Nov 8Nov 11
16°FOct 23Oct 30Nov 2Nov 5Nov 8Nov 11Nov 14Nov 16Nov 20

Growing season length

Days between the last spring and first fall freeze at each threshold, with the chance of a season at least that long.

Threshold10%20%30%40%50%60%70%80%90%
36°F124118113108103100969184
32°F153145138134128124119113104
28°F176170165161157153147140128
24°F202196190185181176172167159
20°F226218212208202198193186177
16°F250242237231226221215209199

How often it gets that cold

The share of years with at least one night at or below each temperature.

36°F or colder
100% of years
32°F or colder
100% of years
28°F or colder
100% of years
24°F or colder
100% of years
20°F or colder
100% of years
16°F or colder
100% of years

Degree days

A degree day is one degree of the daily mean temperature beyond a base, for one day. Heating degree days count cold (the fuel a house burns), cooling degree days heat, growing degree days the warmth a crop needs; each crop has its own base.

Heating degree days, base 65°F
7,593
Cooling degree days, base 65°F
232
Growing degree days, base 40°F
3,661
Growing degree days, base 45°F
2,666
Growing degree days, base 50°F
1,833
Growing degree days, base 55°F
1,147
Growing degree days, base 60°F
607

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,27900
February1,06800
March88805
April663019
May4073131
June15529332
July20118563
August4876493
September2397242
October600047
November95101
December1,27500

What this means

NOAA computes these from the daily lows at the station over 1991-2020, fitting the dates of each year's last and first freeze to a distribution, so a date can be stated at any level of risk. 36°F is a frost risk for tender plants on a clear, calm night, since the ground cools below the air above it; 32°F is a freeze; 28°F is a hard freeze that kills most annuals.

The station is 0.3 km from Manila. Low ground, valleys and open fields freeze earlier and later than a town center or a hillside.

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Sources

NOAA NCEI U.S. Climate Normals, 1991-2020, annual and seasonal normals for station USC00425377 (Manila). Public domain.