Glendale, California Weather
Ceanothus blooms again. Day 93 of summer. Read this microseason across nine climate regions →
Glendale weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 1:30 AM PDT · Open-Meteo
- TodaySep 21Clear later——73°58°—
- TuesdaySep 22Clear——73°55°0°
- WednesdaySep 23Clear——85°67°+12°
- ThursdaySep 24Clear——84°68°-1°
- FridaySep 25Overcast——88°69°+4°
- SaturdaySep 26Overcast——88°73°0°
- SundaySep 27Overcast——89°73°+1°
Air quality now AQI 70 · Moderate
AQI 70 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 19.3 µg/m³ (AQI 70) with a 0.84 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in stagnant 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
PM × Wind × Precip
PM2.5 at 19.3 µg/m³ (AQI 70) with a 0.84 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.84
- 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).
September dries up ditches or breaks down bridges.
- Moonrise
- 4:13 PM
- Moonset
- 1:36 AM
- In sign
- ♑︎ Capricorn
Ceanothus blooms again
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Glendale at a glance
- Today vs. normal: Today averages 66°F (high 73°F, low 58°F), 6°F below the 72°F normal for Sep 21
- Last frost: None in most years — 32°F in 37% of 1991–2020 years (NOAA station 40 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant lettuce, peas, spinach, radishes, beans, squash; harvest lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash
15-Day Forecast — Glendale
- Mon73°58°1%
- Tue73°55°0%
- Wed85°67°0%
- Thu84°68°1%
- Fri88°69°1%
- Sat88°73°0%
- Sun89°73°2%
- Mon94°75°4%
- Tue94°82°11%
- Wed85°72°11%
- Thu73°65°3%
- Fri85°68°6%
- Sat88°75°7%
- Sun93°76°5%
- Mon82°71°3%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Glendale
Interactive wind and temperature map centered on Glendale — it loads in your browser. Open the full weather map.
Right now in the garden
Year-round growing
As of September 21, sowing here runs through the year. Freezes are uncommon, so there is no frost date to plan around; heat and rainfall set the calendar instead. This city's planting calendar for September: plant lettuce, peas, spinach, radishes, beans, and squash; harvest lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, and winter squash.
Sun & seasons in Glendale
Glendale sits in Los Angeles County, where the year’s longest day runs 14h 26m of daylight and its shortest just 9h 52m — a swing of +4h 34m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Los Angeles, the state’s largest city, lies about 10 miles to the WSW. The nearest town Glendale tracks is Pasadena, roughly 6 miles to the ESE.
Air quality in Glendale
Air quality in Glendale’s county has trended cleaner since 2020; its cleanest year on record was 2023 (median AQI 67). See the full air-quality history for Glendale.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | lettuce, peas, spinach, radishes | lettuce, peas, spinach, radishes |
| February | lettuce, peas, spinach, radishes | lettuce, peas, spinach, radishes |
| March | lettuce, peas, spinach, radishes | lettuce, peas, spinach, radishes |
| April | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, beans, summer squash |
| June | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash |
| July | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
| August | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
| September | lettuce, peas, spinach, radishes, beans, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
| October | lettuce, peas, spinach, radishes | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
| November | lettuce, peas, spinach, radishes | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
| December | lettuce, peas, spinach, radishes | lettuce, peas, spinach, radishes |
A year in weather
In Glendale, 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
Similar climates La Cañada Flintridge, CA, La Crescenta-Montrose, CA, Burbank, CA
In Glendale, NOAA NCEI 1991-2020 normals put January near 56°F and July near 74°F — an 18°F seasonal arc — with about 16.5 inches of precipitation over 24 rainy or snowy days.
Precipitation in Glendale peaks in the cool season: February averages 4.5 inches across 5.1 storm-fed days, while August bottoms out at 0.0 inches over just 0.1 rainy days. That groups Glendale with places like La Cañada Flintridge, CA, La Crescenta-Montrose, CA and Burbank, CA on the same cool-season storm track.
Hard freezes are rare in Glendale: the coldest month averages 55°F, so Glendale'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. Glendale beds by a wall stay warmer at night.
Similar climates: La Cañada Flintridge, CA, La Crescenta-Montrose, CA, Burbank, CA, Pasadena, CA, Altadena, CA.
Frequently asked
- When does it freeze in Glendale?
- A freeze is the exception in Glendale: the nearest NOAA station hit 32°F in 37% of 1991–2020 years, too few for a frost date in Glendale.
- What is the rainy season in Glendale?
- February is the wettest month in Glendale, about 4.5 inches on average; the year totals roughly 17 inches.
- What is the warmest month in Glendale?
- August is Glendale's warmest month, averaging about 76°F.
- What is the coldest month in Glendale?
- Glendale bottoms out in December, with a mean near 55°F.
- When can I start a vegetable garden in Glendale?
- Any season works in Glendale: without a reliable freeze, Glendale's heat, not frost, decides when greens and tomatoes do best.
- How many rainy days does Glendale get?
- Expect roughly 24 wet days a year in Glendale.
- What hardiness zone is Glendale?
- Glendale 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 Glendale?
- Glendale'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 Glendale?
- See this week's day-by-day rain chances for Glendale in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Glendale?
- Current conditions for Glendale and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Glendale forecast updated?
- The Glendale forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Glendale?
- Today's sunrise and sunset times for Glendale 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 Glendale?
- The next few days in Glendale's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Glendale sits at 34.2°N; its climate zone is hot-summer Mediterranean (Köppen approximation).
ZIP codes in Glendale
- 91020
- 91046
- 91201
- 91202
- 91203
- 91204
- 91205
- 91206
- 91207
- 91208
- 91209
- 91210
- 91214
- 91221
- 91222
- 91225
- 91226