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Thousand Oaks, California climate

Csb Warm-summer Mediterranean

Thousand Oaks has a mildly seasonal mild-temperate climate (Warm-summer Mediterranean, Köppen Csb). The hottest month is August with an average daily high near 74°F, while the coldest is January averaging around 46°F at night. Precipitation totals about 13 inches a year and is strongly seasonal — February alone averages 3.3 inches while August barely receives 0.01 inches.

☀️ Summers

Mild

Highs near 74°F in August.

About 3 days a year above 90 °F

❄️ Winters

Cool

Lows near 46°F in January.

🌧️ Rain

Fairly dry

About 13 in of rain a year.

Wettest in February

⛅ Sky & trend

Fairly sunny

More sun than cloud through the year.

+1.6 °F vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Thousand Oaks climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	66	65	66	67	68	70	73	74	74	74	70	66
Avg temp (°F)	56	57	57	59	61	64	67	67	67	65	60	56
Avg low (°F)	46	48	49	51	54	58	61	61	60	55	50	47
Precipitation (in)	2.9	3.3	2.3	0.7	0.3	0.1	0.0	0.0	0.1	0.5	0.7	2.1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	66	65	66	67	68	70
Avg temp (°F)	56	57	57	59	61	64
Avg low (°F)	46	48	49	51	54	58
Precipitation (in)	2.9	3.3	2.3	0.7	0.3	0.1

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	73	74	74	74	70	66
Avg temp (°F)	67	67	67	65	60	56
Avg low (°F)	61	61	60	55	50	47
Precipitation (in)	0.0	0.0	0.1	0.5	0.7	2.1

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	6	6	5	4	2	1	0.8	1	2	4	5	5
Days with high ≥ 90°F (days)	0.1	0.1	0.2	0.4	0.3	0.0	—	0.0	0.3	1	0.6	—
Days with low ≤ 32°F (days)	0.3	—	—	—	—	—	—	—	—	—	—	0.1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	6	6	5	4	2	1
Days with high ≥ 90°F (days)	0.1	0.1	0.2	0.4	0.3	0.0
Days with low ≤ 32°F (days)	0.3	—	—	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	0.8	1	2	4	5	5
Days with high ≥ 90°F (days)	—	0.0	0.3	1	0.6	—
Days with low ≤ 32°F (days)	—	—	—	—	—	0.1

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	47	47	45	37	34	29	25	21	24	28	36	44
Clear days (≤ 30% cloud)	12	10	11	14	16	17	21	24	20	19	15	13
Partly cloudy days (30–70%)	10	9	12	11	12	11	9	6	8	8	10	11
Cloudy days (≥ 70%)	9	9	8	5	3	2	1	0.7	2	4	5	8
Relative humidity (%)	70	73	75	75	77	78	79	76	73	70	67	68
Wind speed (mph)	6.9	7.2	6.9	7.1	6.5	5.6	4.8	4.7	5.1	5.7	6.5	7.3

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	47	47	45	37	34	29
Clear days (≤ 30% cloud)	12	10	11	14	16	17
Partly cloudy days (30–70%)	10	9	12	11	12	11
Cloudy days (≥ 70%)	9	9	8	5	3	2
Relative humidity (%)	70	73	75	75	77	78
Wind speed (mph)	6.9	7.2	6.9	7.1	6.5	5.6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	25	21	24	28	36	44
Clear days (≤ 30% cloud)	21	24	20	19	15	13
Partly cloudy days (30–70%)	9	6	8	8	10	11
Cloudy days (≥ 70%)	1	0.7	2	4	5	8
Relative humidity (%)	79	76	73	70	67	68
Wind speed (mph)	4.8	4.7	5.1	5.7	6.5	7.3

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Oxnard Ventura CO AP (NOAA GHCN station USW00093110), about 34 km from the city centre.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →