Coolidge, Arizona Weather
Heat hardens the dust. Day 76 of spring. Read this microseason across nine climate regions →
Coolidge weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Clear——104°70°—
- ThursdayJun 4Overcast——105°71°+1°
- FridayJun 5Clear——104°70°-1°
- SaturdayJun 6Overcast——104°76°0°
- SundayJun 7Overcast——103°77°-1°
- MondayJun 8Overcast——100°73°-3°
- TuesdayJun 9Partly Cloudy——105°73°+5°
Ozone at AQI 70 — peak already passed at 1 PM under clear skies. AQI up 24 in the last 6 hours — air quality is degrading. Levels should ease through evening.
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 70 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 70
- UV peak
- 3.1 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 70
PM × Wind × Precip
PM10 at 24.6 µg/m³ (AQI 23) with a 0.21 fine-to-coarse ratio under 11 mph wind — coarse road or agricultural dust being kicked up.
- PM2.5/PM10
- 0.21
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- blown dust
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).
The higher the clouds, the finer the weather.
- Moonrise
- 4:56 AM
- Moonset
- 2:52 PM
- In sign
- ♑︎ Capricorn
Heat hardens the dust
Coolidge at a glance
- Today vs. normal: 21°F above the seasonal normal for this latitude
- Last frost: March 5 (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 3, 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.
SPC Convective Outlook
Storm Prediction Center — Coolidge
SPC has placed Coolidge in the General Thunderstorms category for severe thunderstorms today.
- 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. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
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
Coolidge's warmest month is July (~92°F mean) and its coldest is December (~52°F). Rainfall peaks in August (1.2 inches) and bottoms out in June (0.1 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 52° | 1.0″ | 2 |
| February | 56° | 1.0″ | 3 |
| March | 62° | 0.9″ | 2 |
| April | 69° | 0.3″ | 1 |
| May | 77° | 0.2″ | 1 |
| June | 87° | 0.1″ | 0 |
| July | 92° | 1.1″ | 3 |
| August | 91° | 1.2″ | 3 |
| September | 85° | 0.7″ | 2 |
| October | 73° | 0.5″ | 1 |
| November | 61° | 0.5″ | 1 |
| December | 52° | 0.8″ | 3 |
Regional context
Coolidge's climate, drawn from NOAA NCEI 1991-2020 normals at the nearest station, runs warm year-round with a milder seasonal range. July means peak near 92°F and January settles around 52°F — a 40°F swing reflecting the lower-latitude position at 32.9°N. Yearly precipitation totals roughly 8.3 inches over about 21 rainy days.
Rainfall stays relatively even across the calendar: August tops out at 1.2 inches across 2.6 days with measurable rain, and June settles around 0.1 inches across 0.3 rainy days — a comparatively narrow seasonal range. The balanced distribution lines Coolidge up with places like Blackwater, AZ, Florence, AZ and Sacaton Flats Village, AZ, all of which run on overlapping storm tracks rather than a single seasonal moisture source.
Hard freezes are uncommon here: the coldest month averages 52°F, well above the freezing threshold, so the growing window stretches across most of the year. Cool-season crops can be planted in late fall through early spring, and warm-season transplants tolerate the local winter unless an unusual frontal passage drops temperatures below the 30-year normal. The hottest stretch arrives in July at a mean of 92°F, which limits cool-season vegetables to the shoulder months on either side of the summer peak. Those are 1991-2020 normals; in a given year an unusual frontal passage can drop temperatures briefly below the seasonal mean. Within Coolidge, neighborhood-scale variation — coastal proximity, elevation, tree cover, urban heat-island intensity — drives a 4-7°F spread in overnight lows that the regional average masks.
Similar climates: Blackwater, AZ, Florence, AZ, Sacaton Flats Village, AZ, Cactus Forest, AZ, Eloy, AZ.
Frequently asked
- When does it freeze in Coolidge?
- Coolidge's last spring frost typically falls around mid-March, and the first fall frost arrives around mid-December.
- What is the rainy season in Coolidge?
- August is the wettest month with about 1.2 inches of rain on average; the city receives roughly 8 inches annually.
- What is the warmest month in Coolidge?
- July is typically warmest, averaging about 92°F.
- What is the coldest month in Coolidge?
- December is typically coldest, averaging about 52°F.
- When can I start a vegetable garden in Coolidge?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-March); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Coolidge get?
- Coolidge averages about 21 rainy days per year.
- What hardiness zone is Coolidge?
- Coolidge's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Coolidge, Arizona sits in a hot desert climate zone. January means hover near 52°F while July averages 92°F — a 40°F seasonal swing.
Across the year, Coolidge receives about 8 inches of precipitation spread over roughly 21 rainy days.
The rhythm of the year is set by latitude (32.9°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.