La Cañada Flintridge, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
La Cañada Flintridge weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——83°61°—
- MondayJul 6Clear——84°57°+1°
- TuesdayJul 7Clear——94°60°+10°
- WednesdayJul 8Clear——98°72°+4°
- ThursdayJul 9Clear——97°75°-1°
- FridayJul 10Clear——93°70°-4°
- SaturdayJul 11Overcast——92°71°-1°
AQI 54 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 13.8 µg/m³ (AQI 60) with a 0.71 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
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 31 now. With UV 9.9 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 41 around 1 PM.
- Present
- AQI 31
- UV peak
- 9.9 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 41
PM × Wind × Precip
PM2.5 at 13.8 µg/m³ (AQI 60) with a 0.71 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.71
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:09 PM
- Moonset
- 11:11 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
La Cañada Flintridge at a glance
- Today vs. normal: 75°F — typical for the season
- Last frost: March 12 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — La Cañada Flintridge
- Sun83°61°1%
- Mon84°57°0%
- Tue94°60°0%
- Wed98°72°0%
- Thu97°75°0%
- Fri93°70°0%
- Sat92°71°0%
- Sun96°72°1%
- Mon98°73°6%
- Tue94°79°7%
- Wed97°77°3%
- Thu98°77°10%
- Fri107°83°10%
- Sat113°84°10%
- Sun96°79°19%
- Mon98°76°19%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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.
Microseason · July 1–5
Summer heat deepens across the valleys
Inland temperatures exceed 95°F regularly; fire danger reaches moderate to high across most of the region.
Day 186 of 365 · Wedge 37 of 72
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
In La Cañada Flintridge, August runs warmest near 76°F and December coldest around 55°F, while February is the wettest month (4.5 inches) and August the driest (0.0 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 56° | 3.6″ | 5 |
| February | 56° | 4.5″ | 5 |
| March | 59° | 2.8″ | 4 |
| April | 62° | 0.9″ | 2 |
| May | 65° | 0.4″ | 1 |
| June | 69° | 0.1″ | 0 |
| July | 74° | 0.0″ | 0 |
| August | 76° | 0.0″ | 0 |
| September | 74° | 0.1″ | 0 |
| October | 68° | 0.7″ | 1 |
| November | 60° | 0.8″ | 2 |
| December | 55° | 2.5″ | 4 |
Regional context
Per NOAA NCEI 1991-2020 normals, La Cañada Flintridge runs from a 56°F January mean to 74°F in July, a 18°F seasonal spread, with near 16.5 inches of precipitation across about 24 wet days.
Cool-season fronts carry La Cañada Flintridge's rain: February logs 4.5 inches on 5.1 days, against August's 0.0 inches on 0.1 — winter does the heavy lifting in La Cañada Flintridge. That cool-season-wet pattern aligns La Cañada Flintridge with places like La Crescenta-Montrose, CA, Glendale, CA and Altadena, CA.
Hard freezes are rare in La Cañada Flintridge: the coldest month averages 55°F, so La Cañada Flintridge's growing window runs most of the year. August is the hottest stretch near 76°F, pushing cool-season crops to the milder shoulder months. Across La Cañada Flintridge, elevation and tree cover drive a 4-7°F spread in La Cañada Flintridge's overnight lows.
Similar climates: La Crescenta-Montrose, CA, Glendale, CA, Altadena, CA, Pasadena, CA, Burbank, CA.
Frequently asked
- When does it freeze in La Cañada Flintridge?
- In La Cañada Flintridge, expect the last spring frost near mid-March; La Cañada Flintridge's first autumn frost comes around mid-December.
- What is the rainy season in La Cañada Flintridge?
- February is the wettest month in La Cañada Flintridge, about 4.5 inches on average; the year totals roughly 17 inches.
- What is the warmest month in La Cañada Flintridge?
- The warmest stretch in La Cañada Flintridge comes in August, around 76°F on average.
- What is the coldest month in La Cañada Flintridge?
- On average December is the chilliest month in La Cañada Flintridge, about 55°F.
- When can I start a vegetable garden in La Cañada Flintridge?
- Frost-hardy sowings begin at mid-March in La Cañada Flintridge; warm-season starts follow two weeks on.
- How many rainy days does La Cañada Flintridge get?
- La Cañada Flintridge averages about 24 days with measurable rain or snow each year.
- What hardiness zone is La Cañada Flintridge?
- La Cañada Flintridge sits in the USDA zone set by December lows near 55°F; the USDA ZIP tool gives the band.
- What is the 10-day forecast for La Cañada Flintridge?
- La Cañada Flintridge's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in La Cañada Flintridge?
- See this week's day-by-day rain chances for La Cañada Flintridge in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in La Cañada Flintridge?
- Current conditions for La Cañada Flintridge and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the La Cañada Flintridge forecast updated?
- The La Cañada Flintridge forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in La Cañada Flintridge?
- Today's sunrise and sunset times for La Cañada Flintridge are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for La Cañada Flintridge?
- The next few days in La Cañada Flintridge's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
La Cañada Flintridge, California occupies a hot-summer Mediterranean zone, with January means near 56°F and July around 74°F — a 18°F swing.
In a typical year La Cañada Flintridge records about 17 inches of precipitation on around 24 days.
Latitude 34.2°N gives La Cañada Flintridge its 18°F swing, and with it the rhythm of La Cañada Flintridge's growing season.
ZIP codes in La Cañada Flintridge
- 91011
- 91012