Thousand Oaks, California Weather
Coastal fog thickens at dawn. Day 76 of spring. Read this microseason across nine climate regions →
Thousand Oaks weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Foggy——78°53°—
- ThursdayJun 4Clear——80°55°+2°
- FridayJun 5Overcast——90°53°+10°
- SaturdayJun 6Overcast——83°64°-7°
- SundayJun 7Clear——78°61°-5°
- MondayJun 8Overcast——83°61°+5°
- TuesdayJun 9Partly Cloudy——82°66°-1°
PM2.5/PM10 ratio 0.62 with 8 mph wind — characteristic of long-range haze transport rather than a local source. AQI flat over the last 6 hours (within ±3 points).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 45 now. With UV 8.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 53 by mid-afternoon.
- Present
- AQI 45
- UV peak
- 8.8 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 53
PM × Wind × Precip
PM2.5/PM10 ratio 0.62 with 8 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.62
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- transport
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
The higher the clouds, the finer the weather.
- Moonrise
- 5:31 AM
- Moonset
- 3:18 PM
- In sign
- ♑︎ Capricorn
Coastal fog thickens at dawn
Thousand Oaks at a glance
- Today vs. normal: 3°F below the seasonal normal for this latitude
- Last frost: March 12 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 3, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | — |
| May | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | — | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | — | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | fall brassicas, garlic (overwinter), carrots | — |
| December | — | — |
A year in weather
August brings Thousand Oaks its highest temperatures (~70°F mean) while December delivers the coolest (~56°F). February sees peak rainfall at 2.9 inches, dropping to 0.0 inches by August.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 57° | 2.9″ | 4 |
| February | 57° | 2.9″ | 5 |
| March | 58° | 2.0″ | 3 |
| April | 60° | 0.6″ | 1 |
| May | 62° | 0.3″ | 1 |
| June | 66° | 0.1″ | 0 |
| July | 69° | 0.0″ | 0 |
| August | 70° | 0.0″ | 0 |
| September | 70° | 0.1″ | 0 |
| October | 65° | 0.5″ | 1 |
| November | 61° | 0.9″ | 2 |
| December | 56° | 1.7″ | 3 |
Regional context
Thousand Oaks falls within a hot-summer Mediterranean climate region. This classification groups it with nearby cities that experience similar temperature ranges, seasonal patterns, and growing conditions.
Similar climates: Los Angeles, CA, San Francisco, CA, San Diego, CA, Riverside, CA, Sacramento, CA.
Naturalist notes
Coast live oaks begin their pollen release in late April, dusting cars and triggering seasonal allergies throughout Thousand Oaks.
May brings the final migration waves of yellow warblers through local canyons as they head toward their breeding grounds.
Frequently asked
- When does it freeze in Thousand Oaks?
- Spring's last frost typically occurs around mid-March in Thousand Oaks, while the first fall frost returns around mid-December.
- What is the rainy season in Thousand Oaks?
- February brings the most rain with about 2.9 inches on average. The city receives roughly 12 inches total each year.
- What is the warmest month in Thousand Oaks?
- August typically brings the warmest weather, averaging about 70°F.
- What is the coldest month in Thousand Oaks?
- December usually brings the coldest temperatures, averaging about 56°F.
- When can I start a vegetable garden in Thousand Oaks?
- Cool-season crops like peas and lettuce can be planted around the last spring frost in mid-March. Warm-season crops such as tomatoes and peppers should wait 1–2 weeks after.
- How many rainy days does Thousand Oaks get?
- Thousand Oaks sees about 19 rainy days per year on average.
- What hardiness zone is Thousand Oaks?
- Check the USDA's online ZIP code lookup for Thousand Oaks's current hardiness zone designation, which reflects the area's lowest average winter temperatures.
Climate
Thousand Oaks, California experiences a hot-summer Mediterranean climate. January temperatures hover near 57°F while July averages 69°F — a 13°F seasonal swing.
Annual precipitation totals about 12 inches across roughly 19 rainy days throughout the year.
Weather patterns here depend on several factors: the city's latitude at 34.2°N, nearby water bodies, and local elevation. These elements determine growing seasons, frost timing, and daily weather conditions.