Weather StoryAlmanac, microseasons, and the day's weather story.

Circle City, Arizona Weather

The monsoon settles in. Day 15 of summer. Read this microseason across nine climate regions →

Circle City weather forecast — hour by hour, 7-day outlook, NOAA radar

Circle City, AZ
Sunday, July 5 at 9:14 AM
96
°
Clear
Feels like
92°
Humidity
16%
Wind
6 mph
Sunrise
10:25 PM
Sunset
12:44 PM
Circle City, AZ
Hour by hour · 24h
24-Hour ForecastCircle City, AZ: 24-hour forecast. Temperatures range from 82 to 108 degrees Fahrenheit.
L 82°H 108°
Circle City, AZ
7-day forecast
  1. Today
    Jul 5
    Overcast
    —
    —
    108°83°—
  2. Monday
    Jul 6
    Overcast
    —
    —
    105°82°-3°
  3. Tuesday
    Jul 7
    Overcast
    —
    —
    108°86°+3°
  4. Wednesday
    Jul 8
    Clear
    —
    —
    108°83°0°
  5. Thursday
    Jul 9
    Clear
    —
    —
    107°84°-1°
  6. Friday
    Jul 10
    Overcast
    —
    —
    104°80°-3°
  7. Saturday
    Jul 11
    Partly Cloudy
    —
    —
    107°82°+3°
Circle City, AZ
Next 24 hours · Hot now
HOT 90°75°95°115°6a12p6p12anow 96°high 108°low 82°
Circle City, AZ
Anemometer · 24h winds · from true
NESW
From · True
ESE
122° · backing 13°
Direction
ESE
122°
Sustained
6
mph
Gust
8
mph
Peak 24h
21
avg 7
Beaufort · 2 · LIGHT BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 7 · pk 21 @ 5:00p
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 167SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Circle City, AZ
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
949.0
+2.2 mb in 3h · rising rapidly · 28.02 inHg
Now
949.0
mb
3h
+2.2
mb
12h
+0.4
mb
24h
-1.8
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 946–951
940945950955-21h-18h-15h-12h-9h-6h-3h-24hNOW951.0946.4949.0
−24h−18h−12h−6hnow
The low is filling — pressure climbing out of storm territory.
Circle City, AZ
Air quality
32
AQI
Good
↓-8 in 6h▲Peak ~43 @ 10 PM

AQI 32 (Good), driven by Ozone. AQI down 8 over the last 6 hours (gradual decline). Ozone at AQI 44 now. With UV 10 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 60 around 1 PM.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.

PM 2.5Good
7.4μg/m³
PM 10Good
20μg/m³
NO₂Good
1μg/m³
OzoneDRIVERModerate
93μg/m³
UV IndexHigh
5.1

What's driving it

Ozone × UV × Sky

Ozone at AQI 44 now. With UV 10 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 60 around 1 PM.

Present
AQI 44
UV peak
10.2 at 1 PM
Sky at peak
clear
Projected peak
AQI 60

PM × Wind × Precip

PM2.5 at 7.4 µg/m³, PM10 at 19.9 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.37
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).

7-DAY AQI TREND50100SUNMONTUEWEDTHUFRISATSUN7-DAY PM2.5 TREND · μg/m³300
Circle City, AZ
Sky cover · visibility · 24h
Cloud cover
5%
CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
179.6mi
UNLIMITED
185 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
16:14 UTC · Circle City, AZ · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
16:14 UTC · Circle City, AZ · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Circle City, AZ
Satellite · infrared · animated
Circle City, AZ
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Circle City, AZ
Almanac · Sunday, July 5
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
4:57 AM
Sunrise
10:25 PM
Daylight
14h 19m
Sunset
12:44 PM
Civil dusk
8:14 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Circle City, AZ
The moon
Waning Gibbous
71% illuminated
Moonrise
10:46 PM
Moonset
10:48 AM
In sign
♓︎ Pisces
Circle City, AZ
Microseason
Jul 1–5

The monsoon settles in

insect
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Circle City at a glance

  • Today vs. normal: 18°F above the seasonal normal for this latitude
  • Last frost: March 10 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

16-Day Forecast — Circle City

  1. Sun108°83°2%
  2. Mon105°82°2%
  3. Tue108°86°0%
  4. Wed108°83°0%
  5. Thu107°84°0%
  6. Fri104°80°2%
  7. Sat107°82°2%
  8. Sun108°81°9%
  9. Mon108°82°13%
  10. Tue103°82°15%
  11. Wed103°81°13%
  12. Thu106°85°26%
  13. Fri113°93°29%
  14. Sat113°96°32%
  15. Sun112°92°31%
  16. Mon114°88°26%

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.

January 1–5: Desert awakens in still light.January 6–10: Moisture lingers beneath the crust.January 11–15: First warmth breaks the shallow freeze.January 16–20: Quail begin their territorial chorus.January 21–25: Buds swell beneath the hard sun.January 26–31: Winter reaches its brightest point.February 1–5: Gold floods the bajada.February 6–10: Wildflower bloom spreads upslope.February 11–15: Hummingbirds stake territory claims.February 16–20: Sonoran wildflowers reach peak diversity.February 21–25: Rain clouds gather on the horizon.February 26–28: Late winter warmth intensifies.March 1–5: Green reaches from the roots upward.March 6–10: Desert creatures wake fully from dormancy.March 11–15: Saguaro flowers crown the desert.March 16–20: Caterpillars turn to wings.March 21–25: Equinox ignites the blooms.March 26–31: Saguaro crowns with flowers.April 1–5: Pre-monsoon heat begins.April 6–10: Brittlebush carpets the desert floor.April 11–15: Heat dome settles in hard.April 16–20: Saguaro fruit splits open red.April 21–25: Monsoon moisture approaches.April 26–30: Last frost recedes to memory.May 1–5: Monsoon signal fires light skies.May 6–10: First haboobs roll across.May 11–15: Heat reaches extremes daily.May 16–20: Saguaro crowns open white.May 21–25: Summer arrives in dust and lightning.May 26–31: Voices rise in monsoon dark.June 1–5: Heat hardens the dust.June 6–10: Monsoon shadows gather.June 11–15: The dry breath stills.June 16–20: The first anvil tops.June 21–25: Haboob rises from the basin.June 26–30: Monsoon doors creak open.July 1–5: The monsoon settles in.July 6–10: Verdant eruption.July 11–15: The lightning oracle speaks.July 16–20: Young raptors claim the thermal.July 21–25: Humidity weight.July 26–31: Storm chambers fruit.August 1–5: The monsoon exhales.August 6–10: The long drought renews.August 11–15: Currents turn cool and distant.August 16–20: Cicada chorus deepens.August 21–25: Monsoon's final breath.August 26–31: Heat begins to relent.September 1–5: Harvest moon over stone.September 6–10: Dew returns to the flats.September 11–15: Raptors ride the thermals.September 16–20: Equinox evening shadow.September 21–25: Thunder finally silent.September 26–30: Insects burrow deep.October 1–5: Desert dries to deep gold.October 6–10: Sandhill cranes return.October 11–15: Brittle beauty blooms.October 16–20: Frost paints stones white.October 21–25: First killing frost falls.October 26–31: Winter rains whisper in.November 1–5: Mesquite leaves turn gold.November 6–10: Ocotillo stands sentinel.November 11–15: First frost traces ridges.November 16–20: Saguaro stands naked.November 21–25: Pacific storms break the drought.November 26–30: North wind strips the way.December 1–5: Desert deepens into winter.December 6–10: True winter arrives.December 11–15: The shortest day looms.December 16–20: Solstice stillness settles.December 21–25: The sun turns north.December 26–31: Year's end in silence.🌱February 14 — First skunk-cabbage spathes thaw their way up☀️March 20 — Spring equinox — day and night balance🌸April 5 — Cherry blossoms peak in the parks🐦May 10 — Warbler migration peaks along the coast✨May 25 — First fireflies scout the meadows at dusk🌞June 21 — Summer solstice — longest day🦗July 25 — Peak cicada chorus in the afternoons🌊August 18 — Warmest sea-surface temperatures of the year🍂September 22 — Autumn equinox — the slow turn❄️October 25 — First widespread frost in the suburbs🍁November 10 — Peak leaf color across the Hudson Valley🌙December 21 — Winter solstice — longest night

Microseason · July 1–5

The monsoon settles in

Afternoon thunderstorms now daily ritual. Rains transform the desert green within 72 hours. Dust clears; air smells alive. Microburst winds flatten entire sections of mesquite.

Day 186 of 365 · Wedge 37 of 72

The solar year drawn as a wheel of 72 five-day windows. Each wedge is one microseason; the four colored arcs mark winter, spring, summer, and autumn; the small icons sit at notable phenological events. The crimson pointer creeps clockwise as the year turns.

Planting calendar

MonthPlantHarvest
January——
February——
Marchlettuce, peas, spinach, radishes—
Aprillettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash—
Maytomatoes, peppers, beans, squashlettuce, peas, radishes
Junetomatoes, peppers, beans, squashlettuce, peas, radishes
July—tomatoes, beans, summer squash
August—tomatoes, beans, summer squash
September—tomatoes, beans, summer squash
Octoberfall brassicas, garlic (overwinter), carrotswinter squash, tomatoes (last)
Novemberfall brassicas, garlic (overwinter), carrots—
December——

A year in weather

July is Circle City's warmest stretch (~91°F) and December its coldest (~52°F); precipitation crests in February at 1.4 inches and ebbs in June to 0.1 inches.

MonthMean tempPrecipRainy days
January52°1.4″2
February55°1.4″3
March60°1.0″1
April66°0.3″1
May76°0.1″0
June86°0.1″0
July91°0.9″3
August90°1.1″3
September84°1.1″2
October72°0.7″1
November60°0.7″2
December52°0.9″2

Frequently asked

When does it freeze in Circle City?
Circle City's last spring frost lands near mid-March, and in Circle City the first fall frost follows around mid-December.
What is the rainy season in Circle City?
Rainfall in Circle City peaks in February near 1.4 inches, out of about 10 inches annually.
What is the warmest month in Circle City?
July is Circle City's warmest month, averaging about 91°F.
What is the coldest month in Circle City?
Circle City bottoms out in December, with a mean near 52°F.
When can I start a vegetable garden in Circle City?
Time tomatoes in Circle City for two weeks after mid-March; peas and greens start at Circle City's frost line.
How many rainy days does Circle City get?
Expect roughly 19 wet days a year in Circle City.
What hardiness zone is Circle City?
Circle City sits in the USDA zone set by December lows near 52°F; the USDA ZIP tool gives the band.
What is the 10-day forecast for Circle City?
Circle City'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 Circle City?
See this week's day-by-day rain chances for Circle City in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Circle City?
Current conditions for Circle City and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Circle City forecast updated?
The Circle City forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Circle City?
Today's sunrise and sunset times for Circle City 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 Circle City?
The next few days in Circle City's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Circle City, Arizona occupies a hot desert zone, with January means near 52°F and July around 91°F — a 39°F swing.

In a typical year Circle City records about 10 inches of precipitation on around 19 days.

The 39°F gap between Circle City's summer and winter, at 33.8°N, shapes Circle City's frost calendar.

All cities in Arizona →

Surprise, AZ weather →

ZIP codes in Circle City

  • 85342

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.