Maricopa County Climate and Average Weather
Climate of Maricopa County: average temperatures, rainfall and seasons month by month.
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° | 0,6 in | ★★★★☆ |
| September | 101° | 76° | 1,5 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).
Recent extremes in Maricopa County
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Maricopa County compares with nearby places
Annual averages, and the difference against Maricopa County.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Area Code 602 | 0 mi | 76°F | about the same | 11 in |
| Phoenix | 0 mi | 76°F | about the same | 11 in |
| ZIP Code 85004 | 0 mi | 76°F | about the same | 11 in |
| Phoenix Sky Harbor International Airport | 4 mi | 76°F | about the same | 11 in |
| Saguaro National Park | 95 mi | 72°F | 37°F cooler | 11 in |
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.
What this means for Maricopa County
Today is warmer than average for August. The forecast high of 114°F is 7.4°F above the 107°F typical for this month.
Rain is very unlikely today - plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 75°F.
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- Avoid long hikes after mid-morning; start at dawn or leave it for a cooler day.
- If your dates are flexible, avoid July, August and September - historically the least comfortable months here.
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 104°F (40°C) in Maricopa County with clear. It feels like 99°F. Today runs from 90°F to 114°F. Chance of precipitation is 1%. Sightseeing conditions score 7.2/10 - good conditions.
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 warmer than average for August. The forecast high of 114°F is 7.4°F above the 107°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. stargazing is the strongest bet in Maricopa County today at 10/10. 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.
Quick facts about Maricopa County
| Type | County |
|---|---|
| State | Arizona |
| Country | United States |
| Continent | North America |
| Coordinates | 33°26′54.2″N 112°4′26.4″W (33.4484, -112.074) |
| Population | 4.500.000 |
| Local time | 1:59 PM (UTC-07:00) |
| Best months | February, March, April, May and November |
| Climate | Hot and arid |
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.
Explore Maricopa County
Every topic we hold for this place, and the same topic for the places around it.
Climate 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 104°F (40°C) with clear. Humidity is 11% and wind is 6 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 1:59 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 August 23, 2026 at 1:59 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
