Glendale, California Weather
Coastal fog thickens at dawn. Day 77 of spring. Read this microseason across nine climate regions →
Glendale weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Foggy——76°55°—
- FridayJun 5Overcast——77°54°+1°
- SaturdayJun 6Overcast——75°53°-2°
- SundayJun 7Mostly Clear——75°56°0°
- MondayJun 8Partly Cloudy——75°57°0°
- TuesdayJun 9Overcast——68°58°-7°
- WednesdayJun 10Clear——73°55°+5°
PM2.5 at 25.8 µg/m³, PM10 at 35.7 µg/m³ — typical background levels with no transport signature. 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 46 now. With UV 10 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 63 by mid-afternoon.
- Present
- AQI 46
- UV peak
- 10.2 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 63
PM × Wind × Precip
PM2.5 at 25.8 µg/m³, PM10 at 35.7 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.72
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 6:07 AM
- Moonset
- 4:16 PM
- In sign
- ♒︎ Aquarius
Coastal fog thickens at dawn
Glendale at a glance
- Today vs. normal: 7°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 4, 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 Glendale's peak warmth (~76°F mean) while December delivers the coldest temperatures (~55°F). February sees the heaviest rainfall at 4.5 inches, contrasting sharply with August's bone-dry 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
Glendale belongs to the hot-summer Mediterranean climate region, sharing similar temperature ranges, seasonal patterns, and growing conditions with neighboring cities throughout the area.
Similar climates: Los Angeles, CA, San Francisco, CA, San Diego, CA, Riverside, CA, Sacramento, CA.
Naturalist notes
California poppies begin their golden bloom across Glendale's hillsides during late March and early April.
Allen's hummingbirds return from their winter range in late February, their courtship dives becoming a common sight by March.
Frequently asked
- When does it freeze in Glendale?
- Spring's final frost in Glendale typically occurs around mid-March, while the first fall frost returns around mid-December.
- What is the rainy season in Glendale?
- February stands as the wettest month with about 4.5 inches of rain on average, contributing to the city's roughly 17 inches annually.
- What is the warmest month in Glendale?
- August typically brings the warmest temperatures, averaging about 76°F.
- What is the coldest month in Glendale?
- December typically delivers the coldest weather, averaging about 55°F.
- When can I start a vegetable garden in Glendale?
- Cool-season crops like peas and lettuce can be planted around the last spring frost in mid-March, while warm-season crops such as tomatoes and peppers should wait 1–2 weeks after.
- How many rainy days does Glendale get?
- Glendale experiences about 24 rainy days per year on average.
- What hardiness zone is Glendale?
- Glendale's USDA hardiness zone depends on its lowest average winter temperature; the USDA's online lookup tool using the city ZIP code provides the current zone designation.
Climate
Glendale, California experiences a hot-summer Mediterranean climate zone. January temperatures hover near 56°F while July averages 74°F — creating an 18°F seasonal swing.
Annual precipitation in Glendale totals about 17 inches spread across roughly 24 rainy days.
Weather patterns here respond to the city's latitude (34.2°N), proximity to large water bodies, and elevation. These factors determine what grows locally, when frost threatens, and the daily weather patterns throughout the year.