Scottsdale, Arizona Weather
Thunder finally silent. Day 93 of summer. Read this microseason across nine climate regions →
Scottsdale weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 7:26 AM MST · Open-Meteo
- TodaySep 21Clear later——96°78°—
- TuesdaySep 22Clear——93°73°-3°
- WednesdaySep 23Light Drizzle——90°78°-3°
- ThursdaySep 24Drizzle20%—95°80°+5°
- FridaySep 25Light Drizzle10%—94°78°-1°
- SaturdaySep 26Overcast——97°83°+3°
- SundaySep 27Light Drizzle18%0.01″91°79°-6°
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 12.9 µg/m³ (AQI 58), ratio 0.51 with 6 mph wind — characteristic of long-range haze transport rather than a local source.
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 12.9 µg/m³ (AQI 58), ratio 0.51 with 6 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.51
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- transport
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
- 3:46 PM
- Moonset
- 1:11 AM
- In sign
- ♑︎ Capricorn
Thunder finally silent
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Scottsdale at a glance
- Today vs. normal: Today averages 87°F (high 96°F, low 78°F), 3°F above the 84°F normal for Sep 21
- Last frost: February 4 (1991–2020 median, NOAA station 15 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant tomatoes, peppers, beans, squash, fall brassicas, carrots; harvest summer squash, winter squash
16-Day Forecast — Scottsdale
- Mon96°78°2%
- Tue93°73°7%
- Wed90°78°7%
- Thu95°80°20%
- Fri94°78°10%
- Sat97°83°4%
- Sun91°79°18%
- Mon93°79°24%
- Tue96°83°10%
- Wed98°83°10%
- Thu100°85°7%
- Fri99°86°14%
- Sat95°85°11%
- Sun95°83°10%
- Mon92°76°16%
- Tue86°77°3%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Scottsdale
Interactive wind and temperature map centered on Scottsdale — 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 16) is weeks away. Fall transplants go in about 10–12 weeks before the first frost, September 23 to October 7 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 — Scottsdale
SPC includes Scottsdale in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- 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 Scottsdale
Scottsdale sits in Maricopa County, where the year’s longest day runs 14h 24m of daylight and its shortest just 9h 55m — a swing of +4h 29m between the June and December solstices.
Phoenix, the state’s largest city, lies about 15 miles to the WSW. The nearest town Scottsdale tracks is Phoenix, roughly 15 miles to the WSW.
Air quality in Scottsdale
Air quality in Scottsdale’s county has trended cleaner since 2020; its cleanest year on record was 2023 (median AQI 72). See the full air-quality history for Scottsdale.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | lettuce, peas, spinach, radishes | fall brassicas, carrots |
| February | lettuce, peas, spinach, radishes | lettuce, spinach, radishes |
| March | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| April | tomatoes, squash | lettuce, peas, spinach, beans, summer squash |
| May | squash | tomatoes, peppers, beans, summer squash, garlic |
| June | squash | tomatoes, peppers, summer squash, winter squash |
| July | squash | 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, squash, fall brassicas, carrots | beans, summer squash, winter squash |
| November | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| December | — | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
A year in weather
July is Scottsdale's warmest stretch (~93°F) and December its coldest (~54°F); precipitation crests in February at 1.2 inches and ebbs in June to 0.1 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 55° | 1.1″ | 4 |
| February | 57° | 1.2″ | 4 |
| March | 64° | 1.1″ | 3 |
| April | 71° | 0.3″ | 2 |
| May | 79° | 0.2″ | 1 |
| June | 89° | 0.1″ | 0 |
| July | 93° | 0.9″ | 4 |
| August | 92° | 0.8″ | 4 |
| September | 87° | 0.6″ | 2 |
| October | 75° | 0.6″ | 3 |
| November | 63° | 0.8″ | 2 |
| December | 54° | 1.0″ | 5 |
Regional context
Similar climates Fountain Hills, AZ, Carefree, AZ, Paradise Valley, AZ
Scottsdale swings from 55°F in January to 93°F in July (39°F) per NOAA NCEI 1991-2020 normals; precipitation in Scottsdale runs about 8.7 inches on roughly 34 measurable days.
Scottsdale's moisture rides winter storm tracks: February brings 1.2 inches over 3.9 wet days, while June sees only 0.1 inches across 0.4 days in the dry warm season. It is a winter-storm rhythm Scottsdale shares with places like Fountain Hills, AZ, Carefree, AZ and Paradise Valley, AZ.
Scottsdale reaches its last hard frost near February 4; that is the cue for lettuce, chard, arugula, and mustard greens. Scottsdale's heat-lovers — tomatoes, peppers, squash — hold off until Scottsdale's frost risk clears, 10-14 days on. By December 16, frost is back in Scottsdale — protect or harvest anything tender. That date is a median: Scottsdale freezes sooner in half of years.
Similar climates: Fountain Hills, AZ, Carefree, AZ, Paradise Valley, AZ, Rio Verde, AZ, Cave Creek, AZ.
Frequently asked
- When does it freeze in Scottsdale?
- Scottsdale's last spring frost lands near February 4, and in Scottsdale the first fall frost follows around December 16.
- What is the rainy season in Scottsdale?
- February is the wettest month in Scottsdale, about 1.2 inches on average; the year totals roughly 9 inches.
- What is the warmest month in Scottsdale?
- On average July tops the year in Scottsdale at about 93°F.
- What is the coldest month in Scottsdale?
- The coldest stretch in Scottsdale falls in December, around 54°F on average.
- When can I start a vegetable garden in Scottsdale?
- Hardy spring crops go in near February 4 in Scottsdale; tender peppers and squash wait 10–14 days.
- How many rainy days does Scottsdale get?
- Scottsdale averages about 34 days with measurable rain or snow each year.
- What hardiness zone is Scottsdale?
- With December around 54°F, Scottsdale's zone reflects that minimum — the USDA ZIP map confirms Scottsdale's band.
- What is the 10-day forecast for Scottsdale?
- Scottsdale'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 Scottsdale?
- See this week's day-by-day rain chances for Scottsdale in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Scottsdale?
- Current conditions for Scottsdale and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Scottsdale forecast updated?
- The Scottsdale forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Scottsdale?
- Today's sunrise and sunset times for Scottsdale 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 Scottsdale?
- The next few days in Scottsdale's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Scottsdale sits at 33.7°N; its climate zone is hot desert (Köppen approximation).
ZIP codes in Scottsdale
- 85250
- 85251
- 85252
- 85254
- 85255
- 85256
- 85257
- 85258
- 85259
- 85260
- 85261
- 85262
- 85266
- 85267
- 85271