Tucson receives its highest rainfall in Jul, while humidity peaks during summer months.
🌧️ Wettest:Jul — 80 mm☀️ Driest:May — 5 mm
💧 Humidity peaks at 48% in Aug · annual avg 39%
🌍 Climate Summary
Avg Annual Temp:68.5°F
Avg Annual Rainfall:370 mm
Avg Humidity:39%
Data Period:1981 – 2025
Tucson Climate Overview
Tucson has a warm subtropical climate with warm summers and cold winters.
Temperatures peak in Jun and drop to their lowest in Jan,
while rainfall is highest during summer months.
Humidity remains relatively low throughout the year creating cold and dry conditions.
📈 Yearly Trends
The warmest year in Tucson's recorded history was 2025
(avg: 72.5°F),
while the coldest year was 1991
(avg: 66°F),
based on annual average temperatures.
📊 Key Climate Trends
🌡️ Tucson's temperature shows a slight warming trend over the past decade
📈 Minimum temperatures show a slight warming trend in recent years
🌧️ Rainfall varies year-to-year without a clear long-term trend
🌡️ Annual Temperature Trend
View Range:
Average annual high/low · Last 10 years · °F
Tucson's temperatures shows a slight warming trend over the past decade.
The highest recorded temperature reached
113.7°F in Jul 1995,
while the lowest dropped to
17.4°F in Feb 2011.
🌧️ Annual Precipitation
View Range:
Total annual precipitation · Last 10 years · mm/year
Annual rainfall in Tucson shows noticeable variation. Rainfall varies year-to-year without a clear long-term trend.
Based on 45 years of data (1981–2025), Jun is typically the hottest month in Tucson, Arizona, with average high temperatures around 107.5°F.
What is the coldest month in Tucson?▼
Jan is the coldest month in Tucson, with average low temperatures around 27.6°F.
What is the rainiest month in Tucson?▼
Jul receives the most rainfall with approximately 80 mm, while May is the driest with 5 mm.
What was the highest temperature ever recorded in Tucson?▼
The highest recorded temperature was 113.7°F in Jul 1995. This is part of the historical record spanning 1981–2025.
What was the lowest temperature ever recorded in Tucson?▼
The lowest recorded temperature was 17.4°F in Feb 2011.
How many years of data does this page cover?▼
This page covers 45 years of climate data from 1981 to 2025. As new data is added to the database the page automatically reflects the updated coverage.
How much sunlight does Tucson get?▼
Tucson receives the most sunlight in Jun with an average solar radiation of 8.09 kWh/m²/day. This solar radiation data, sourced from NASA POWER, is useful for solar energy planning, agriculture, and understanding seasonal sunshine availability in Arizona.
Where does this weather data come from?▼
All climate data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite and model data. It provides monthly averages for temperature, precipitation, humidity, wind speed, and solar radiation.
📚 Data Source
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.