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Climate reading

Los Angeles and the Chinese solar calendar

The Chinese calendar has a fortnight called Frost’s Descent. In Los Angeles, the thirty-year record contains no freeze at all — not in that fortnight, not in any other. Rain and heat here move in opposite directions (r = -0.94), where the calendar’s home climate has them arriving together (r = 0.88). Advice built on hot-and-wet does not describe this place.

The station this page reads from

Weather stationLAX, CA
Station IDUSW00023174
Freeze-free days / year365
Median first freezeno freeze on record
Median last freezeno freeze on record
Rain vs. heatr = -0.94 (inverted)
Normals period1991–2020

NOAA NCEI 1991–2020 U.S. Climate Normals. A normal is a thirty-year average, not a forecast and not any single year’s weather.

Right now

Rain and heat across the whole year

The classical calendar assumes rain and heat arrive together — across the 24 fortnights the prototype's rainy days and temperature run together (r = 0.88). Where you are they run opposite (r = -0.94): your rainiest fortnights are your coldest. Every piece of seasonal advice built on 'damp heat' lands differently here.

Where the calendar is most wrong about Los Angeles

Of the twenty-four fortnights, these four are the ones whose name or advice sits furthest from what Los Angeles’s weather station actually recorded over thirty years.

Minor Snow 小雪from 2026-11-22

Pentads: 虹藏不见 · 天气上升地气下降 · 闭塞而成冬

closing and storing (閉藏 bì cáng). Go to bed early and rise late — wait for the sunlight. Leave the cold, stay near warmth, and do not let the skin sweat open.

This is the response to winter qi — the way of nourishing the storing (養藏). Going against it is said to injure the kidney, so that spring brings weakness and collapse and there is less to carry the bringing-forth.

Su Wen, 'Four Qi Regulate the Spirit' (素問·四氣調神大論); pentads from the Yue Ling Qi Shi Er Hou Ji Jie

Average / low / high59.4°F / 50.8°F / 68.0°F
Days with measurable rain13.7%
Days at or below freezing0.0
Daylight10h 12m (-22 min from two weeks ago)
  • This fortnight's advice was written for a place averaging 40.6°F at this point in the year. At LAX, CA the 1991–2020 average is 59.4°F — warmer by 18.8°F.
  • The name of this fortnight, 'Minor Snow', is a phenological marker from the Yellow River valley — an observation of what was seen happening, not a temperature threshold. At LAX, CA a normal year records 0.0 days at or below freezing in total. The name and the thermometer are two different kinds of statement, and here they part company entirely.
  • This is the fastest-cooling fortnight of your year: 3.3°F below the one before it.

If Yang deficiency came out high for you. Traditional theory associates Yang deficiency with feeling the cold sooner than the people around you. That is a theoretical association drawn from the classical literature, not a research finding. Your average low this fortnight is 50.8°F, and about 0.0 days typically fall to freezing or below. Whether any of it matters for you is something to observe, not something this page can tell you.

Minor Cold 小寒from 2026-01-05

Pentads: 雁北乡 · 鹊始巢 · 雉雊

Same seasonal passage as above — the classical text gives one instruction per season, not one per fortnight.

Average / low / high57.9°F / 49.4°F / 66.4°F
Days with measurable rain19.4%
Days at or below freezing0.0
Daylight9h 58m (+5 min from two weeks ago)
  • This fortnight's advice was written for a place averaging 33.1°F at this point in the year. At LAX, CA the 1991–2020 average is 57.9°F — warmer by 24.8°F.
  • The name of this fortnight, 'Minor Cold', is a phenological marker from the Yellow River valley — an observation of what was seen happening, not a temperature threshold. At LAX, CA a normal year records 0.0 days at or below freezing in total. The name and the thermometer are two different kinds of statement, and here they part company entirely.

If Yin deficiency came out high for you. Traditional theory associates Yin deficiency with internal dryness and a sense of heat from within. That is a theoretical association drawn from the classical literature, not a research finding. Your average high this fortnight is 66.4°F, and 19.4% of days typically see measurable rain. Whether any of it matters for you is something to observe, not something this page can tell you.

Major Cold 大寒from 2026-01-20

Pentads: 鸡乳 · 征鸟厉疾 · 水泽腹坚

Same seasonal passage as above — the classical text gives one instruction per season, not one per fortnight.

Average / low / high57.9°F / 49.5°F / 66.2°F
Days with measurable rain19.9%
Days at or below freezing0.0
Daylight10h 13m (+14 min from two weeks ago)
  • This fortnight's advice was written for a place averaging 34.0°F at this point in the year. At LAX, CA the 1991–2020 average is 57.9°F — warmer by 23.9°F.
  • The name of this fortnight, 'Major Cold', is a phenological marker from the Yellow River valley — an observation of what was seen happening, not a temperature threshold. At LAX, CA a normal year records 0.0 days at or below freezing in total. The name and the thermometer are two different kinds of statement, and here they part company entirely.

If Qi stagnation came out high for you. Traditional theory associates Qi stagnation with mood that moves with the season; the classical texts tie autumn's gathering-in to it in particular. That is a theoretical association drawn from the classical literature, not a research finding. Daylight at your latitude is 10h 13m, up 14 minutes from two weeks ago. Whether any of it matters for you is something to observe, not something this page can tell you.

Major Snow 大雪from 2026-12-07

Pentads: 鹖鴠不鸣 · 虎始交 · 荔挺出

Same seasonal passage as above — the classical text gives one instruction per season, not one per fortnight.

Average / low / high57.5°F / 48.9°F / 65.9°F
Days with measurable rain17.1%
Days at or below freezing0.0
Daylight9h 58m (-14 min from two weeks ago)
  • This fortnight's advice was written for a place averaging 36.3°F at this point in the year. At LAX, CA the 1991–2020 average is 57.5°F — warmer by 21.2°F.
  • The name of this fortnight, 'Major Snow', is a phenological marker from the Yellow River valley — an observation of what was seen happening, not a temperature threshold. At LAX, CA a normal year records 0.0 days at or below freezing in total. The name and the thermometer are two different kinds of statement, and here they part company entirely.

If Damp-heat came out high for you. Traditional theory associates Damp-heat with damp and heat arriving together, rather than either one alone. That is a theoretical association drawn from the classical literature, not a research finding. This fortnight runs to an average high of 65.9°F with rain on about 17.1% of days. Whether any of it matters for you is something to observe, not something this page can tell you.

All twenty-four fortnights at Los Angeles

Fortnight BeginsAvg °FRainy days %Freezing daysvs. calendar °F
Minor Cold小寒2026-01-0557.919.40.0+24.8
Major Cold大寒2026-01-2057.919.90.0+23.9
Start of Spring立春2026-02-0457.721.60.0+19.4
Rain Water雨水2026-02-1858.121.90.0+15.3
Awakening of Insects惊蛰2026-03-0558.918.70.0+10.9
Spring Equinox春分2026-03-2059.814.40.0+6.0
Pure Brightness清明2026-04-0560.810.20.0+2.0
Grain Rain谷雨2026-04-2062.17.70.0-2.5
Start of Summer立夏2026-05-0563.35.90.0-4.3
Grain Buds小满2026-05-2164.43.50.0-7.9
Grain in Ear芒种2026-06-0566.01.70.0-10.5
Summer Solstice夏至2026-06-2168.11.10.0-10.9
Minor Heat小暑2026-07-0769.51.50.0-10.6
Major Heat大暑2026-07-2370.21.40.0-11.1
Start of Autumn立秋2026-08-0770.70.70.0-7.6
End of Heat处暑2026-08-2371.00.70.0-3.8
White Dew白露2026-09-0770.31.80.0+1.8
Autumn Equinox秋分2026-09-2368.73.70.0+4.8
Cold Dew寒露2026-10-0867.26.20.0+8.2
Frost's Descent霜降2026-10-2365.58.40.0+12.1
Start of Winter立冬2026-11-0762.710.40.0+16.1
Minor Snow小雪2026-11-2259.413.70.0+18.8
Major Snow大雪2026-12-0757.517.10.0+21.2
Winter Solstice冬至2026-12-2257.419.10.0+23.6

‘vs. calendar’ is this fortnight’s local average minus the average where the calendar was written. Rain figures on this page count rainy days, not inches. The two can point opposite ways — summer storms drop more water on fewer days.

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