CLIMATE DATA FOR Energy Scheming CLIMATE FILES:
Los Angeles, CA

Sources for Climate Information


General Climate Information

NAME 

Los Angeles, CA

Latitude 

33.9

Longitude 

118.4

Standard. Meridian 

120

Degree Day 65 

1458

Shallow Well Water Temperature (deg. F) 

68

SSF rule-of-thumb 

Lo

Hi

Solar collection area as a percent
of floor area (Ag / Af)

5

9

Heat Load Reduction (no night insulation) 

36

58

Heat Load Reduction (R9 night insulation) 

44

72

Prevailing Wind Direction in Summer 
(N, NNE, NE, ESE. E, ...) 

WSW

Associated Wind Speed 

8

Input for # of days 

10

Abbreviated Climate for Individual Days

Notes:

   

DAY 1 of 10

DAY NAME 

Winter Cloudy

non typ

Month 

January

Cloud Cover (in tenths) 

0

Sky 

Cloudy

Temp. in deg. F. 

Max = 65

Min = 47

Wind Speed (mph) 

8

Wind Direction (eg. ENE) 

WNW

Rel. Humidity in % 

Max = 69

Min = 60

Radiation Daily Total in BTU (Total Horiz.) 

710

Multiplication Factor for wind speed 

default = 0.5 

DAY 2 of 10

DAY NAME 

Winter Clear

typ

Month 

January

Cloud Cover (in tenths) 

0

Sky 

Clear 

Temp. in deg. F. 

Max =65

Min = 47

Wind Speed (mph) 

8

Wind Direction (eg. ENE) 

WNW

Rel. Humidity in % 

Max = 69

Min = 60

Radiation Daily Total in BTU (Total Horiz.) 

890

Multiplication Factor for wind speed 

default = 0.5 

DAY 3 of 10

DAY NAME 

Spring Cloudy

non-typ

Month 

April

Cloud Cover (in tenths) 

0

Sky 

Cloudy 

Temp. in deg. F. 

Max = 67

Min = 53

Wind Speed (mph) 

9

Wind Direction (eg. ENE) 

WSW

Rel. Humidity in % 

Max = 76

Min = 64

Radiation Daily Total in BTU (Total Horiz.) 

1740

Multiplication Factor for wind speed 

default = 0.5 

DAY 4 of 10 

DAY NAME 

Spring Clear

typ

Month 

April

Cloud Cover (in tenths) 

0

Sky 

Clear 

Temp. in deg. F. 

Max = 67

Min = 64

Wind Speed (mph) 

9

Wind Direction (eg. ENE) 

WSW

Rel. Humidity in % 

Max = 76

Min = 64

Radiation Daily Total in BTU (Total Horiz.) 

1920

Multiplication Factor for wind speed 

default = 0.5 

DAY 5 of 10 

DAY NAME 

Summer Cloudy

non-typ

Month 

July

Cloud Cover (in tenths) 

0

Sky 

Cloudy 

Temp. in deg. F. 

Max = 75

Min = 63

Wind Speed (mph) 

8

Wind Direction (eg. ENE) 

WSW

Rel. Humidity in % 

Max = 80

Min = 67

Radiation Daily Total in BTU (Total Horiz.) 

2030

Multiplication Factor for wind speed 

default = 0.5 

DAY 6 of 10

DAY NAME 

Summer Clear

typ

Month 

July

Cloud Cover (in tenths) 

0

Sky 

Clear 

Temp. in deg. F. 

Max = 75

Min = 63

Wind Speed (mph) 

8

Wind Direction (eg. ENE) 

WSW

Rel. Humidity in % 

Max = 80

Min = 67 

Radiation Daily Total in BTU (Total Horiz.) 

2260

Multiplication Factor for wind speed 

default = 0.5 

DAY 7 of 10  

DAY NAME 

Fall Cloudy

non-typ

Month 

October

Cloud Cover (in tenths) 

0

Sky 

Cloudy 

Temp. in deg. F. 

Max = 74

Min = 59

Wind Speed (mph) 

8

Wind Direction (eg. ENE) 

WSW

Rel. Humidity in % 

Max = 76

Min = 66

Radiation Daily Total in BTU (Total Horiz.) 

1190

Multiplication Factor for wind speed 

default = 0.5 

DAY 8 of 10 

DAY NAME 

Fall Clear

typ

Month 

October

Cloud Cover (in tenths) 

0

Sky 

Clear 

Temp. in deg. F. 

Max = 74

Min = 59

Wind Speed (mph) 

8

Wind Direction (eg. ENE) 

WSW

Rel. Humidity in % 

Max = 76

Min = 66

Radiation Daily Total in BTU (Total Horiz.) 

1320

Multiplication Factor for wind speed 

default = 0.5 

DAY 9 of 10

DAY NAME 

Winter 2.5% Design Day

Extreme

Month 

January

Cloud Cover (in tenths) 

0

Sky 

Clear

Temp. in deg. F. 

Max = 61

Min = 43

Wind Speed (mph) 

15

Wind Direction (eg. ENE) 

WSW

Rel. Humidity in % 

Max = 71

Min = 62

Radiation Daily Total in BTU (Total Horiz.) 

1040

Multiplication Factor for wind speed 

default = 0.5 

DAY 10 of 10 

DAY NAME 

Summer 2.5% Design Day

Extreme

Month 

July

Cloud Cover (in tenths) 

0

Sky 

Clear 

Temp. in deg. F. 

Max = 80

Min = 65

Wind Speed (mph) 

8

Wind Direction (eg. ENE) 

WSW

Rel. Humidity in % 

Max = 68

Min = 55

Radiation Daily Total in BTU (Total Horiz.) 

2530

Multiplication Factor for wind speed 

default = 0.5 

NOTE: To down load 24 hour data, for the extreme days above, see 24 hour data.

SOURCES: Except as noted , data is taken from the following source. For bibliographic references, see Sources for Climate Information.