Maricopa County Weather Forecast
Maricopa County weather: 83°F, clear sky. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Summary
Maricopa County is a county in Arizona. Maricopa County is a county in the United States. It has a population of about 4.5 million.
Right now it is 83°F (29°C) in Maricopa County with clear sky. It feels like 84°F. Today runs from 67°F to 85°F. Chance of precipitation is 3%. Sightseeing conditions score 9.4/10 - excellent - go now.
The best time to visit Maricopa County is February, March, April, May and November. The climate is hot and arid. July, August and September tend to be the least comfortable months. July is the warmest month with average highs near 107°F, while January is the coldest with lows near 43°F.
The closest major airport is Phoenix Sky Harbor International Airport (PHX), about 4 mi away. Nearby highlights include Saguaro National Park, Slide Rock State Park, Petrified Forest National Park and Grand Canyon (UNESCO World Heritage Site).
In plain terms. Today is much colder than average for September. The forecast high of 85°F is 15.5°F below the 101°F typical for this month. The best window to be outside is roughly 7 AM to 10 AM, when temperature, rain chance and wind line up best. swimming is the strongest bet in Maricopa County today at 9.9/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Active alerts for Maricopa County
Derived from the forecast. No official alert feed is wired for this country yet.
Weather in Maricopa County right now
Source: Open-Meteo. Updated 6:20 PM, Sep 30 local time.
See the Maricopa County forecast by time range
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
16-day forecast for Maricopa County
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Wed, Sep 30 | ⛅ Partly cloudy | 85° / 67° | 3% | 6 mph | 7 |
| Thu, Oct 1 | ☀️ Clear sky | 96° / 66° | 0% | 6 mph | 7 |
| Fri, Oct 2 | ☀️ Clear sky | 97° / 69° | 1% | 17 mph | 7 |
| Sat, Oct 3 | ☀️ Clear sky | 95° / 82° | 0% | 18 mph | 7 |
| Sun, Oct 4 | ☀️ Clear sky | 98° / 83° | 0% | 16 mph | 7 |
| Mon, Oct 5 | 🌤️ Mainly clear | 97° / 85° | 1% | 12 mph | 7 |
| Tue, Oct 6 | 🌤️ Mainly clear | 98° / 85° | 2% | 8 mph | 7 |
| Wed, Oct 7 | 🌤️ Mainly clear | 99° / 85° | 2% | 14 mph | 7 |
| Thu, Oct 8 | ☀️ Clear sky | 98° / 86° | 1% | 19 mph | 7 |
| Fri, Oct 9 | ☀️ Clear sky | 96° / 84° | 0% | 17 mph | 6 |
| Sat, Oct 10 | ☀️ Clear sky | 94° / 83° | 1% | 8 mph | 6 |
| Sun, Oct 11 | ☁️ Overcast | 96° / 85° | 13% | 11 mph | 6 |
| Mon, Oct 12 | ☁️ Overcast | 96° / 86° | 14% | 12 mph | 6 |
| Tue, Oct 13 | ☀️ Clear sky | 97° / 85° | 14% | 8 mph | 6 |
| Wed, Oct 14 | ☀️ Clear sky | 96° / 86° | 10% | 11 mph | 6 |
| Thu, Oct 15 | ☀️ Clear sky | 95° / 84° | 6% | 13 mph | 6 |
Climate in Maricopa County month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 65° | 43° | 1,1 in | ★★★★☆ |
| February | 74° | 50° | 0,9 in | ★★★★☆ |
| March | 80° | 55° | 1,2 in | ★★★★☆ |
| April | 85° | 60° | 0,1 in | ★★★★★ |
| May | 94° | 69° | 0,1 in | ★★★★★ |
| June | 106° | 81° | 0,4 in | ★★★★☆ |
| July | 107° | 85° | 1,4 in | ★★★☆☆ |
| August | 107° | 85° | 1,1 in | ★★★☆☆ |
| September | 101° | 78° | 1,7 in | ★★★★☆ |
| October | 91° | 65° | 1,8 in | ★★★★☆ |
| November | 76° | 52° | 1,2 in | ★★★★☆ |
| December | 70° | 46° | 0,7 in | ★★★★☆ |
Climate type: Hot and arid. Source: Open-Meteo archive (ERA5).
Weather map for Maricopa County
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Air quality and pollen in Maricopa County
Air quality: Open-Meteo (CAMS). US AQI scale.
Sun, twilight and moon
Golden and blue hour are the standard photographic approximation around sunrise and sunset.
Best time to visit Maricopa County
Go in February, March, April, May and November. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: July, August and September - expect the least comfortable mix of heat, cold or rain.
Explore Maricopa County
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Maricopa County?
Maricopa County is a county in Arizona. Its coordinates are 33.4484, -112.074. It lies in North America.
What is the weather like in Maricopa County right now?
It is currently 83°F (29°C) with clear sky. Humidity is 37% and wind is 2 mph.
When is the best time to visit Maricopa County?
February, March, April, May and November offer the most comfortable conditions in Maricopa County, which has a hot and arid climate. July, August and September are usually the hardest months for outdoor plans.
What time zone is Maricopa County in?
Maricopa County observes America/Phoenix (UTC-07:00). The local time is 6:20 PM.
How many people live in Maricopa County?
Maricopa County has a population of approximately 4.5 million.
What is the nearest airport to Maricopa County?
The closest airports are Phoenix Sky Harbor International Airport (PHX), 4 mi away, Harry Reid International Airport (LAS), 252 mi away and San Diego International Airport (SAN), 300 mi away.
What are the top things to do in Maricopa County?
Popular options include Saguaro National Park, Slide Rock State Park, Petrified Forest National Park, Grand Canyon (UNESCO World Heritage Site), Colorado River and Grand Canyon National Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (us-counties) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated September 30, 2026 at 6:20 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
