Tucson, AZ Weather Forecast & Climate Guide
Tucson has a hot desert climate similar to Phoenix but slightly cooler due to higher elevation.
Climate type: Hot desert (Köppen BWh)
Tucson Climate Overview
Very hot summers with temperatures over 100°F. Mild winters. Monsoon rains in summer.
Summer monsoon brings thunderstorms and dust storms. Low humidity most of the year.
Tucson Weather by Season
spring
Spring is Tucson's peak wildflower season — saguaro cacti bloom in April-May and desert colors peak. Highs climb from the 70s°F to the 90s°F with low humidity.
summer
Summers are intensely hot with highs regularly exceeding 100°F from May through September. The North American Monsoon in July-August brings dramatic afternoon thunderstorms and some of the most beautiful skies in the US.
fall
Fall cools slowly through September and October. By November, highs are in the 70s-80s°F with crisp nights and perfect outdoor weather.
winter
Winters are mild and sunny with highs in the mid-60s°F and cool nights in the 40s°F. Occasional cold fronts can drop temperatures into the 30s°F overnight.
Tucson Average Monthly Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 65° | 68° | 74° | 82° | 91° | 100° | 100° | 98° | 95° | 84° | 73° | 65° |
| Low °F | 41° | 44° | 48° | 54° | 62° | 71° | 75° | 74° | 69° | 58° | 47° | 41° |
Best Time to Visit Tucson
October through April. Mild-to-warm days, cool nights, sunshine, and no extreme heat. March-April is peak wildflower season and ideal for hiking Saguaro National Park.
Severe Weather Risks
- Extreme heat
- Monsoon thunderstorms
- Flash flooding
- Dust storms
- Wildfires
Weather Facts About Tucson
- >Tucson sits at 2,400 feet elevation, making it slightly cooler than Phoenix despite being further south.
- >The North American Monsoon brings some of the most photogenic lightning and sunset skies in the US.
- >Saguaro National Park's namesake cacti only exist in the Sonoran Desert around Tucson and Phoenix.
Tucson Weather FAQ
When is the best time to visit Tucson?
October through April delivers Tucson's best weather — mild temperatures, sunshine, and no extreme heat. March and April bring wildflower season and ideal hiking weather in Saguaro National Park.
Is Tucson cooler than Phoenix?
Slightly. Tucson's higher elevation (2,400 ft vs Phoenix's 1,100 ft) means summer highs are typically 4-6°F cooler. It's still brutally hot in summer, just not quite as extreme.
What is monsoon season in Tucson?
The North American Monsoon runs from late June through September, bringing dramatic afternoon thunderstorms, flash flood risk, dust storms, and some of the most spectacular skies in the US. Most of the year's rain falls during this window.
Does Tucson ever freeze?
Occasionally. Winter nights can dip into the upper 20s°F, and hard freezes happen every few winters. The last major freeze was February 2011, when temperatures dropped below 20°F and damaged desert vegetation.