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United States › California › Los Angeles County › Climate Station BURBANK GLENDALE PASADENA AP, CA US Distance 5.5 mi Normals 1991–2020

30-year climate normals

Los Angeles County Climate and Weather Averages

Hottest month — August

88.9°

average daily high. The coldest month is December, averaging a low of 44.2°F.

Los Angeles County gets 13.91" of precipitation a year, and 67% of it falls in Jan, Feb, Mar.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low Precip
January 67.0° 45.3° 2.97"
February 66.8° 46.4° 3.95"
March 69.5° 49.0° 2.43"
April 72.7° 51.9° 0.74"
May 75.5° 56.6° 0.29"
June 80.3° 59.9° 0.09"
July 86.7° 64.5° 0.01"
August 88.9° 64.9° 0.01"
September 86.6° 62.9° 0.11"
October 79.4° 57.5° 0.60"
November 72.5° 49.0° 0.69"
December 66.1° 44.2° 2.02"

Rainfall by month

Los Angeles County has a distinct wet season. 67% of the year's precipitation arrives in Jan, Feb, Mar.

January 2.97"
February 3.95"
March 2.43"
April 0.74"
May 0.29"
June 0.09"
July 0.01"
August 0.01"
September 0.11"
October 0.60"
November 0.69"
December 2.02"
Annual total 13.91"

What this climate costs you

Degree days measure how hard a building has to work to stay comfortable. They are the reason two identical houses have very different power bills, and they are the link between the weather here and what you pay every month.

Cooling degree days How much air conditioning the climate demands 1,481
Heating degree days How much heating the climate demands 1,400
Approximate annual cooling cost At 33.25¢/kWh, California average $492
Approximate annual electric heating cost Lower where heating is gas rather than electric $163

These are rough planning figures from degree days and the state electricity price, not a bill estimate. House size, insulation and fuel type move them a lot. See the full cost of owning a home in Los Angeles County, where electricity is one line of eight.

Common questions

What is the weather like in Los Angeles County?

Los Angeles County averages a high of 88.9°F in August and a low of 44.2°F in December. Annual precipitation is 13.91 inches, with essentially no snow.

When is the rainy season in Los Angeles County?

The wettest stretch is Jan, Feb, Mar, which accounts for 67% of the year's precipitation. That is a pronounced wet season rather than rain spread evenly through the year.

How hot does it get in Los Angeles County?

The average daily high in August, the hottest month, is 88.9°F. That drives 1,481 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Los Angeles County?

Effectively no. Measurable snowfall is rare in Los Angeles County.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station BURBANK GLENDALE PASADENA AP, CA US (USW00023152), 5.5 miles from the county centroid.
  • Heating and cooling degree days — NOAA, same station and period.
  • Electricity price — US Energy Information Administration, Electric Power Monthly Table 5.6.A, California residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.