Pima County Weather Forecast
Pima County weather: 74°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Summary
Pima County is a county in Arizona. Pima County is a county in the United States. It has a population of about 1.1 million.
Right now it is 74°F (23°C) in Pima County with clear. It feels like 81°F. Today runs from 73°F to 94°F. Chance of precipitation is 33%. Sightseeing conditions score 9.1/10 - excellent - go now.
The best time to visit Pima County is February, March, April and May. The climate is hot and arid. January, July and August tend to be the least comfortable months. June is the warmest month with average highs near 101°F, while January is the coldest with lows near 40°F.
The closest major airport is Phoenix Sky Harbor International Airport (PHX), about 103 mi away. Nearby highlights include Saguaro National Park, Slide Rock State Park and Petrified Forest National Park.
In plain terms. Today is about average for September. The forecast high of 94°F is in line with the 96°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. sightseeing is the strongest bet in Pima County today at 9.1/10. 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 Pima County
Derived from the forecast. No official alert feed is wired for this country yet.
Weather in Pima County right now
Source: Open-Meteo. Updated 2:37 PM, Sep 15 local time.
See the Pima County forecast by time range
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
16-day forecast for Pima County
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Tue, Sep 15 | ☁️ Overcast | 94° / 73° | 33% | 14 mph | 7 |
| Wed, Sep 16 | 🌧️ Heavy rain | 85° / 71° | 69% · 2,8 in | 16 mph | 8 |
| Thu, Sep 17 | 🌦️ Light showers | 93° / 80° | 37% · 0,1 in | 7 mph | 8 |
| Fri, Sep 18 | ☁️ Overcast | 97° / 84° | 2% | 10 mph | 8 |
| Sat, Sep 19 | ☀️ Clear sky | 96° / 85° | 3% | 11 mph | 8 |
| Sun, Sep 20 | ☁️ Overcast | 96° / 85° | 3% | 9 mph | 8 |
| Mon, Sep 21 | ☁️ Overcast | 94° / 85° | 8% | 12 mph | 6 |
| Tue, Sep 22 | 🌦️ Drizzle | 91° / 78° | 16% · 0,1 in | 7 mph | 7 |
| Wed, Sep 23 | ☁️ Overcast | 96° / 83° | 20% | 13 mph | 8 |
| Thu, Sep 24 | 🌦️ Light drizzle | 95° / 85° | 11% · 0,0 in | 19 mph | 7 |
| Fri, Sep 25 | 🌦️ Light drizzle | 98° / 84° | 14% · 0,0 in | 12 mph | 8 |
| Sat, Sep 26 | 🌦️ Light drizzle | 98° / 85° | 15% · 0,1 in | 14 mph | 8 |
| Sun, Sep 27 | 🌦️ Light drizzle | 97° / 84° | 19% · 0,0 in | 11 mph | 7 |
| Mon, Sep 28 | 🌦️ Light drizzle | 100° / 86° | 19% · 0,0 in | 10 mph | 7 |
| Tue, Sep 29 | 🌦️ Light drizzle | 103° / 89° | 16% · 0,0 in | 14 mph | 7 |
| Wed, Sep 30 | ☁️ Overcast | 102° / 89° | 13% | 15 mph | 7 |
Climate in Pima 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 | 63° | 40° | 1,6 in | ★★★★☆ |
| February | 72° | 46° | 0,9 in | ★★★★☆ |
| March | 77° | 50° | 1,5 in | ★★★★☆ |
| April | 83° | 56° | 0,3 in | ★★★★★ |
| May | 91° | 63° | 0,4 in | ★★★★★ |
| June | 101° | 75° | 0,5 in | ★★★★☆ |
| July | 101° | 78° | 1,8 in | ★★★★☆ |
| August | 101° | 78° | 0,7 in | ★★★★☆ |
| September | 96° | 72° | 2,1 in | ★★★★☆ |
| October | 89° | 62° | 2,0 in | ★★★★☆ |
| November | 74° | 49° | 1,2 in | ★★★★☆ |
| December | 71° | 45° | 0,7 in | ★★★★☆ |
Climate type: Hot and arid. Source: Open-Meteo archive (ERA5).
Weather map for Pima 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 Pima 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 Pima County
Go in February, March, April and May. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, July and August - expect the least comfortable mix of heat, cold or rain.
Explore Pima 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 Pima County?
Pima County is a county in Arizona. Its coordinates are 32.2226, -110.9747. It lies in North America.
What is the weather like in Pima County right now?
It is currently 74°F (23°C) with clear. Humidity is 85% and wind is 2 mph.
When is the best time to visit Pima County?
February, March, April and May offer the most comfortable conditions in Pima County, which has a hot and arid climate. January, July and August are usually the hardest months for outdoor plans.
What time zone is Pima County in?
Pima County observes America/Phoenix (UTC-07:00). The local time is 2:37 PM.
How many people live in Pima County?
Pima County has a population of approximately 1.1 million.
What is the nearest airport to Pima County?
The closest airports are Phoenix Sky Harbor International Airport (PHX), 103 mi away.
What are the top things to do in Pima County?
Popular options include Saguaro National Park, Slide Rock State Park and Petrified Forest 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 15, 2026 at 2:37 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
