Tucson Weather Year Round
Three facts to hold onto: winters average in the high 60s, summers average over 100°F, and the sun shines on roughly 350 days a year. Everything else is scheduling.
| Month | Avg high | Avg low | What it feels like |
|---|---|---|---|
| Jan | 67°F | 39°F | Perfect. Jackets at night, patio days. |
| Feb | 71°F | 42°F | Peak season. Wildflower hints. |
| Mar | 78°F | 47°F | The best month, locals will tell you. |
| Apr | 86°F | 53°F | Warm, dry, glorious. |
| May | 95°F | 62°F | Summer previews begin. |
| Jun | 105°F | 72°F | The dry furnace. Mornings only outside. |
| Jul | 102°F | 76°F | Monsoon: afternoon storms, humidity up. |
| Aug | 99°F | 74°F | Monsoon continues. Dramatic skies. |
| Sep | 97°F | 69°F | Transitioning back. |
| Oct | 88°F | 58°F | Relief month. Everyone's outside. |
| Nov | 76°F | 46°F | Perfection returns. |
| Dec | 66°F | 38°F | Sweater weather, Tucson-style. |
The monsoon (June 15 – September 30)
Arizona's official monsoon season brings the year's only real rain — dramatic afternoon storms that flood desert washes and cool the evenings. Newcomers learn two rules fast: never drive through a flooded wash (it becomes a crime if you need rescue — the "Stupid Motorist Law" is real), and watch the sky before heading out on a July hike.
How locals actually schedule
June–September: outdoors before 10am, evenings after sunset, afternoons in A/C. October–May: everything, everywhere, all day. Mt. Lemmon — an hour up and 30° cooler — is the summer escape valve, and the desert in February makes the whole trade worthwhile. See what there is to do in it all year.