Weather in Orange County

Calculated from weather data of John Wayne/Orange County Airport (KSNA) between 2020 and 2024.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	19.6	18.6	17.8	21.1	20.1	20.6
February	19.2	18.0	18.1	22.6	19.8	22.3
March	19.7	18.5	17.1	22.1	19.3	19.8
April	22.0		19.8	23.6	21.8	22.3
May	21.7		19.6	22.5	22.0	25.1
June	23.8		22.0	25.3	24.5	25.1
July	26.6		26.6	25.8	27.0	25.8
August	27.6		27.5	28.6	27.3	28.1
September	27.3		25.1	30.1	26.8	29.3
October	26.0		25.3	25.3	25.0	27.3
November	23.2		24.5	21.8	24.3	22.5
December	19.9		20.8	18.0	17.8	21.1
Average	22.5	18.3	22.0	24.1	23.0	24.1

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	10.4	11	10	11	10	11
February	10.3	11	9	10	10	12
March	11.8	12	11	13	10	13
April	13.9		13	15	14	14
May	15.6		15	16	16	18
June	17.2		17	18	18	18
July	19.1		19	19	20	18
August	20.3		20	21	19	20
September	19.6		19	22	19	20
October	16.8		17	19	16	18
November	13.1		14	12	15	12
December	10.4		12	10	10	9
Average	14.4	11.3	14.6	15.7	14.7	15.2

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Cold and hot days

Number of days	2024	2023	2022	2021	2020
30 °C or warmer	0	11	31	28	40
25 °C or warmer	2	91	139	118	120
20 °C or warmer	14	225	282	257	280
0 °C or colder	0	0	0	0	0

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	5.3	6	12	1	3	0
February	6.7	20	6	0	0	3
March	6.8	10	19	2	3	6
April	1.4		0	0	0	9
May	1.6		2	1	2	2
June	0.5		1	0	1	1
July	0.3		0	1	1	1
August	0.7		4	0	1	0
September	0.7		3	1	0	0
October	0.9		1	2	2	0
November	1.9		1	2	0	1
December	4.3		3	4	12	2
Average	3.4	11.9	4.2	1.0	2.0	2.1

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (km/h)

Month	Average	2024	2023	2022	2021	2020
January	9.1	9	12	8	10	8
February	10.2	9	11	11	10	10
March	11.3	13	11	12	11	11
April	11.5		11	12	12	12
May	11.8		11	12	12	11
June	11.1		10	11	12	11
July	11.4		11	11	12	10
August	10.8		10	11	10	11
September	9.9		10	11	9	8
October	10.0		10	9	9	10
November	8.9		10	12	8	8
December	7.7		7	7	8	8
Average	10.4	10.4	10.4	10.8	10.2	9.9

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	SW	S	SW	S	SW
February	S	SW	SW	SW	S
March	S	SW	SW	SW	SW
April		SW	SW	SW	S
May		SW	SW	SW	SW
June		SW	SW	SW	SW
July		SW	SW	SW	SW
August		SW	SW	SW	SW
September		SW	SW	SW	SW
October		S	SW	SW	SW
November		S	S	SW	SW
December		S	SW	SW	S

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.

Orange County weather Q&A

What is the warmest month in Orange County?

The warmest month is August with an average temperature of 28 °C over the past years.

What is the coldest month in Orange County?

The coldest month is February with an average daytime temperature of 19 °C in the past few years.

Which month is the wettest in Orange County?

Chance of precipitation is the highest in March with a probability of around 6.9 %.

Which month is the driest in Orange County?

The least rainfall and snow can be expected in July. The probability is about 0.3 %.