Climate data for Los Angeles (USC, Downtown), 1991–2020 normals, extremes 1877–present
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 95
(35) 		95
(35) 		99
(37) 		106
(41) 		103
(39) 		112
(44) 		109
(43) 		106
(41) 		113
(45) 		108
(42) 		100
(38) 		92
(33) 		113
(45)
Mean maximum °F (°C) 83.0
(28.3) 		82.8
(28.2) 		85.8
(29.9) 		90.1
(32.3) 		88.9
(31.6) 		89.1
(31.7) 		93.5
(34.2) 		95.2
(35.1) 		99.4
(37.4) 		95.7
(35.4) 		88.9
(31.6) 		81.0
(27.2) 		101.5
(38.6)
Mean daily maximum °F (°C) 68.0
(20.0) 		68.0
(20.0) 		69.9
(21.1) 		72.4
(22.4) 		73.7
(23.2) 		77.2
(25.1) 		82.0
(27.8) 		84.0
(28.9) 		83.0
(28.3) 		78.6
(25.9) 		72.9
(22.7) 		67.4
(19.7) 		74.8
(23.8)
Daily mean °F (°C) 58.4
(14.7) 		59.0
(15.0) 		61.1
(16.2) 		63.6
(17.6) 		65.9
(18.8) 		69.3
(20.7) 		73.3
(22.9) 		74.7
(23.7) 		73.6
(23.1) 		69.3
(20.7) 		63.0
(17.2) 		57.8
(14.3) 		65.8
(18.8)
Mean daily minimum °F (°C) 48.9
(9.4) 		50.0
(10.0) 		52.4
(11.3) 		54.8
(12.7) 		58.1
(14.5) 		61.4
(16.3) 		64.7
(18.2) 		65.4
(18.6) 		64.2
(17.9) 		59.9
(15.5) 		53.1
(11.7) 		48.2
(9.0) 		56.8
(13.8)
Mean minimum °F (°C) 41.4
(5.2) 		42.9
(6.1) 		45.4
(7.4) 		48.9
(9.4) 		53.5
(11.9) 		57.4
(14.1) 		61.1
(16.2) 		61.7
(16.5) 		59.1
(15.1) 		53.7
(12.1) 		45.4
(7.4) 		40.5
(4.7) 		39.2
(4.0)
Record low °F (°C) 28
(−2) 		28
(−2) 		31
(−1) 		36
(2) 		40
(4) 		46
(8) 		49
(9) 		49
(9) 		44
(7) 		40
(4) 		34
(1) 		30
(−1) 		28
(−2)
Average rainfall inches (mm) 3.29
(84) 		3.64
(92) 		2.23
(57) 		0.69
(18) 		0.32
(8.1) 		0.09
(2.3) 		0.02
(0.51) 		0.00
(0.00) 		0.13
(3.3) 		0.58
(15) 		0.78
(20) 		2.48
(63) 		14.25
(362)
Average rainy days (≥ 0.01 in) 6.1 6.3 5.1 2.8 1.9 0.5 0.4 0.1 0.4 2.2 2.8 5.5 34.1
Mean monthly sunshine hours 225.3 222.5 267.0 303.5 276.2 275.8 364.1 349.5 278.5 255.1 217.3 219.4 3,254.2
Percent possible sunshine 71 72 72 78 64 64 83 84 75 73 70 71 73
Average ultraviolet index 2.9 4.2 6.2 8.1 9.2 10.4 10.8 10.0 8.1 5.4 3.5 2.6 6.7
Source 1: NOAA (sun 1961–1977)[1][2][3][4]
Source 2: UV Index Today (1995 to 2022)[5]
Climate data for Los Angeles (LAX), 1991–2020 normals, extremes 1944–present
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 91
(33) 		92
(33) 		95
(35) 		102
(39) 		97
(36) 		104
(40) 		97
(36) 		98
(37) 		110
(43) 		106
(41) 		101
(38) 		94
(34) 		110
(43)
Mean maximum °F (°C) 81.2
(27.3) 		80.1
(26.7) 		80.6
(27.0) 		83.1
(28.4) 		80.6
(27.0) 		79.8
(26.6) 		83.7
(28.7) 		86.0
(30.0) 		90.7
(32.6) 		90.9
(32.7) 		87.2
(30.7) 		78.8
(26.0) 		95.5
(35.3)
Mean daily maximum °F (°C) 66.3
(19.1) 		65.6
(18.7) 		66.1
(18.9) 		68.1
(20.1) 		69.5
(20.8) 		72.0
(22.2) 		75.1
(23.9) 		76.7
(24.8) 		76.5
(24.7) 		74.4
(23.6) 		70.9
(21.6) 		66.1
(18.9) 		70.6
(21.4)
Daily mean °F (°C) 57.9
(14.4) 		57.9
(14.4) 		59.1
(15.1) 		61.1
(16.2) 		63.6
(17.6) 		66.4
(19.1) 		69.6
(20.9) 		70.7
(21.5) 		70.1
(21.2) 		67.1
(19.5) 		62.3
(16.8) 		57.6
(14.2) 		63.6
(17.6)
Mean daily minimum °F (°C) 49.4
(9.7) 		50.1
(10.1) 		52.2
(11.2) 		54.2
(12.3) 		57.6
(14.2) 		60.9
(16.1) 		64.0
(17.8) 		64.8
(18.2) 		63.7
(17.6) 		59.8
(15.4) 		53.7
(12.1) 		49.1
(9.5) 		56.6
(13.7)
Mean minimum °F (°C) 41.8
(5.4) 		42.9
(6.1) 		45.3
(7.4) 		48.0
(8.9) 		52.7
(11.5) 		56.7
(13.7) 		60.2
(15.7) 		61.0
(16.1) 		58.7
(14.8) 		53.2
(11.8) 		46.1
(7.8) 		41.1
(5.1) 		39.4
(4.1)
Record low °F (°C) 27
(−3) 		34
(1) 		35
(2) 		42
(6) 		45
(7) 		48
(9) 		52
(11) 		51
(11) 		47
(8) 		43
(6) 		38
(3) 		32
(0) 		27
(−3)
Average rainfall inches (mm) 2.86
(73) 		2.99
(76) 		1.73
(44) 		0.60
(15) 		0.28
(7.1) 		0.08
(2.0) 		0.04
(1.0) 		0.00
(0.00) 		0.11
(2.8) 		0.49
(12) 		0.82
(21) 		2.23
(57) 		12.23
(311)
Average rainy days (≥ 0.01 in) 6.1 6.3 5.6 2.6 1.7 0.5 0.5 0.1 0.5 2.0 3.2 5.4 34.5
Average relative humidity (%) 63.4 67.9 70.5 71.0 74.0 75.9 76.6 76.6 74.2 70.5 65.5 62.9 70.8
Average dew point °F (°C) 41.4
(5.2) 		44.4
(6.9) 		46.6
(8.1) 		49.1
(9.5) 		52.7
(11.5) 		56.5
(13.6) 		60.1
(15.6) 		61.2
(16.2) 		59.2
(15.1) 		54.1
(12.3) 		46.8
(8.2) 		41.4
(5.2) 		51.1
(10.6)
Source: NOAA (relative humidity and dew point 1961–1990)[1][6][7][8]

References

  1. ^ a b "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved 2020-07-18.
  2. ^ "Summary of Monthly Normals 1991–2020". National Oceanic and Atmospheric Administration. Retrieved May 11, 2021.
  3. ^ "Station Name: CA LOS ANGELES DWTN USC CAMPUS". National Oceanic and Atmospheric Administration. Retrieved 2020-07-18.
  4. ^ "LOS ANGELES/WBO CA Climate Normals". National Oceanic and Atmospheric Administration. Retrieved October 20, 2013.
  5. ^ "Historical UV Index Data - Los Angeles, CA". UV Index Today. Retrieved April 21, 2023.
  6. ^ "Station Name: CA LOS ANGELES INTL AP". National Oceanic and Atmospheric Administration. Retrieved 2014-05-09.
  7. ^ "Summary of Monthly Normals 1991–2020". National Oceanic and Atmospheric Administration. Retrieved May 11, 2021.
  8. ^ "WMO Climate Normals for LOS ANGELES/INTL, CA 1961–1990". National Oceanic and Atmospheric Administration. Retrieved 2014-04-17.
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