Glendale, Arizona Weather
Thunder finally silent. Day 93 of summer. Read this microseason across nine climate regions →
Glendale weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 12:50 AM MST · Open-Meteo
- TodaySep 21Overcast——101°78°—
- TuesdaySep 22Overcast——98°72°-3°
- WednesdaySep 23Overcast——95°85°-3°
- ThursdaySep 24Light Showers19%—99°81°+4°
- FridaySep 25Drizzle10%—96°79°-3°
- SaturdaySep 26Clear——100°89°+4°
- SundaySep 27Light Drizzle10%—97°91°-3°
Air quality now AQI 52 · Moderate
AQI 52 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 11.9 µg/m³, PM10 at 46.3 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
PM × Wind × Precip
PM2.5 at 11.9 µg/m³, PM10 at 46.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.26
- Wind
- calm
- 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).
September dries up ditches or breaks down bridges.
- Moonrise
- 3:47 PM
- Moonset
- 1:13 AM
- In sign
- ♑︎ Capricorn
Thunder finally silent
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Glendale at a glance
- Today vs. normal: Today averages 90°F (high 101°F, low 78°F), 7°F above the 83°F normal for Sep 21
- Last frost: January 20 (1991–2020 median, NOAA station 7 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant tomatoes, peppers, beans, squash, fall brassicas, carrots; harvest summer squash, winter squash
15-Day Forecast — Glendale
- Mon101°79°3%
- Tue98°72°2%
- Wed95°85°7%
- Thu99°81°19%
- Fri96°79°10%
- Sat100°89°4%
- Sun97°91°10%
- Mon100°89°15%
- Tue101°88°9%
- Wed96°85°16%
- Thu94°80°5%
- Fri98°85°14%
- Sat102°89°13%
- Sun98°86°14%
- Mon91°87°9%
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
Peak growing season
As of September 21, the growing season is at its peak — the first frost (around December 15) is weeks away. Fall transplants go in about 10–12 weeks before the first frost, September 22 to October 6 here. This city's planting calendar for September: plant tomatoes, peppers, beans, squash, fall brassicas, and carrots; harvest summer squash and winter squash.
SPC Convective Outlook
Storm Prediction Center — Glendale
SPC includes Glendale in the general thunderstorm area tomorrow — no severe risk, but storms are possible.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook.
Sun & seasons in Glendale
Glendale sits in Maricopa County, where the year’s longest day runs 14h 23m of daylight and its shortest just 9h 55m — a swing of +4h 28m between the June and December solstices.
Phoenix, the state’s largest city, lies about 8 miles to the E. The nearest town Glendale tracks is Phoenix, roughly 8 miles to the E.
Air quality in Glendale
Air quality in Glendale’s county has trended cleaner since 2020; its cleanest year on record was 2023 (median AQI 72). See the full air-quality history for Glendale.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | lettuce, peas, spinach, radishes | radishes, fall brassicas, carrots |
| February | — | lettuce, peas, spinach, radishes |
| March | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| April | tomatoes, squash | lettuce, peas, summer squash |
| May | squash | tomatoes, peppers, beans, summer squash, garlic |
| June | squash | tomatoes, peppers, summer squash, winter squash |
| July | squash | tomatoes, summer squash, winter squash |
| August | tomatoes, peppers, beans, squash | summer squash, winter squash |
| September | tomatoes, peppers, beans, squash, fall brassicas, carrots | summer squash, winter squash |
| October | — | beans, summer squash, winter squash |
| November | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| December | lettuce, peas, spinach, radishes | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
A year in weather
The year in Glendale tops out in July (~92°F) and dips lowest in December (~52°F), with February wettest at 1.3 inches and June driest at 0.0 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 53° | 1.0″ | 2 |
| February | 56° | 1.3″ | 3 |
| March | 63° | 1.0″ | 2 |
| April | 70° | 0.3″ | 1 |
| May | 78° | 0.1″ | 0 |
| June | 87° | 0.0″ | 0 |
| July | 92° | 0.8″ | 2 |
| August | 91° | 1.0″ | 2 |
| September | 85° | 0.7″ | 1 |
| October | 73° | 0.6″ | 1 |
| November | 61° | 0.6″ | 1 |
| December | 52° | 0.9″ | 2 |
Regional context
Similar climates Sun City, AZ, Youngtown, AZ, El Mirage, AZ
In Glendale, NOAA NCEI 1991-2020 normals put January near 53°F and July near 92°F — a 39°F seasonal arc — with about 8.3 inches of precipitation over 18 rainy or snowy days.
Precipitation in Glendale peaks in the cool season: February averages 1.3 inches across 2.5 storm-fed days, while June bottoms out at 0.0 inches over just 0.1 rainy days. That groups Glendale with places like Sun City, AZ, Youngtown, AZ and El Mirage, AZ on the same cool-season storm track.
Around January 20, Glendale sheds its freezing nights — lettuce, chard, arugula, and mustard greens go into Glendale's beds. Glendale's heat-lovers — tomatoes, peppers, squash — hold off until Glendale's frost risk clears, 10-14 days on. The season ends by December 15 in Glendale, once hard frosts set back in. That date is a median: Glendale freezes sooner in half of years.
Similar climates: Sun City, AZ, Youngtown, AZ, El Mirage, AZ, Phoenix, AZ, Litchfield Park, AZ.
Frequently asked
- When does it freeze in Glendale?
- Frost typically leaves Glendale by January 20 and returns to Glendale near December 15.
- What is the rainy season in Glendale?
- Rainfall in Glendale peaks in February near 1.3 inches, out of about 8 inches annually.
- What is the warmest month in Glendale?
- On average July tops the year in Glendale at about 92°F.
- What is the coldest month in Glendale?
- The coldest stretch in Glendale falls in December, around 52°F on average.
- When can I start a vegetable garden in Glendale?
- Hardy spring crops go in near January 20 in Glendale; tender peppers and squash wait 10–14 days.
- How many rainy days does Glendale get?
- Glendale averages about 18 days with measurable rain or snow each year.
- What hardiness zone is Glendale?
- Because Glendale bottoms near 52°F in December, that winter low sets Glendale's USDA zone — verify by ZIP.
- 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 33.6°N; its climate zone is hot desert (Köppen approximation).
ZIP codes in Glendale
- 85301
- 85302
- 85303
- 85304
- 85305
- 85306
- 85307
- 85308
- 85309
- 85310
- 85311
- 85312
- 85318
- 85340
- 85355