Casa Loma, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Casa Loma weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——98°76°—
- MondayJul 6Clear——99°71°+1°
- TuesdayJul 7Clear——104°61°+5°
- WednesdayJul 8Clear——105°61°+1°
- ThursdayJul 9Clear——108°62°+3°
- FridayJul 10Clear——112°63°+4°
- SaturdayJul 11Overcast——114°74°+2°
AQI 60 (Moderate), driven by PM2.5. AQI up 5 over the last 6 hours (gradual rise). PM2.5 at 15.7 µg/m³, PM10 at 50.3 µg/m³ — typical background levels with no transport signature.
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 11 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 64 around 1 PM.
- Present
- AQI 45
- UV peak
- 10.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 64
PM × Wind × Precip
PM2.5 at 15.7 µg/m³, PM10 at 50.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.31
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 11:13 PM
- Moonset
- 11:14 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Casa Loma at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: March 19 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Casa Loma
- Sun98°76°2%
- Mon99°71°0%
- Tue104°61°0%
- Wed105°61°0%
- Thu108°62°0%
- Fri112°63°0%
- Sat114°74°1%
- Sun96°71°2%
- Mon105°65°6%
- Tue108°70°7%
- Wed111°76°3%
- Thu114°74°6%
- Fri117°74°6%
- Sat111°77°10%
- Sun113°74°6%
- Mon111°69°6%
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
The year in Casa Loma tops out in July (~84°F) and dips lowest in December (~48°F), with February wettest at 2.0 inches and August driest at 0.0 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 48° | 1.9″ | 13 |
| February | 51° | 2.0″ | 11 |
| March | 54° | 2.0″ | 12 |
| April | 61° | 0.9″ | 8 |
| May | 69° | 0.3″ | 3 |
| June | 76° | 0.0″ | 0 |
| July | 84° | 0.0″ | 1 |
| August | 83° | 0.0″ | 1 |
| September | 76° | 0.1″ | 1 |
| October | 66° | 0.3″ | 2 |
| November | 54° | 1.1″ | 8 |
| December | 48° | 1.7″ | 11 |
Frequently asked
- When does it freeze in Casa Loma?
- Frost typically leaves Casa Loma by mid-March and returns to Casa Loma near mid-December.
- What is the rainy season in Casa Loma?
- Casa Loma sees its heaviest rain in February (around 2.0 inches), part of roughly 10 inches a year.
- What is the warmest month in Casa Loma?
- Casa Loma peaks in July, when the mean runs near 84°F.
- What is the coldest month in Casa Loma?
- December is Casa Loma's coldest month, averaging about 48°F.
- When can I start a vegetable garden in Casa Loma?
- In Casa Loma, sow peas and hardy greens around mid-March; Casa Loma's tomatoes and peppers wait two weeks more.
- How many rainy days does Casa Loma get?
- Casa Loma records around 70 days of measurable precipitation annually.
- What hardiness zone is Casa Loma?
- Since December in Casa Loma averages 48°F, Casa Loma's USDA zone follows that floor — confirm it by ZIP.
- What is the 10-day forecast for Casa Loma?
- Casa Loma'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 Casa Loma?
- See this week's day-by-day rain chances for Casa Loma in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Casa Loma?
- Current conditions for Casa Loma and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Casa Loma forecast updated?
- The Casa Loma forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Casa Loma?
- Today's sunrise and sunset times for Casa Loma 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 Casa Loma?
- The next few days in Casa Loma's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Set in a hot-summer Mediterranean zone, Casa Loma, California swings from 48°F in the heart of winter to 84°F at midsummer — a 36°F arc.
Across the year, Casa Loma collects about 10 inches of precipitation over roughly 70 days with measurable rain or snow.
Casa Loma's 36°F range, set by its 35.3°N position, drives frost timing and what thrives in Casa Loma.
ZIP codes in Casa Loma
- 93307