TUCSON, Ariz. – Arizona’s first full week of October opens with unseasonable warmth as Tucson heads toward near-triple-digit highs by Tuesday. Temperatures will soar into the upper 90s, keeping the desert heat alive while much of the country cools. Drivers on I-10 should plan for strong afternoon sun and heavy glare during the evening commute.
According to the National Weather Service in Tucson, daytime highs will climb from around 91°F Sunday to near 97°F by Tuesday. Light and variable winds will shift southeasterly, adding to the dry air that’s kept rain chances nearly zero. The agency says this pattern will hold through midweek before subtle cooling late week. Hydration and sun safety remain top priorities, especially for outdoor workers and hikers.
Clear skies mean prime conditions for early Halloween decorating, park visits, and fall photo sessions at local pumpkin patches. Despite the heat, mild nights near 65°F will make evenings comfortable for outdoor dining and late walks. Officials with Pima County Emergency Management urge residents to limit strenuous activity during peak afternoon hours and keep pets shaded and hydrated.
By Thursday, highs remain in the upper 90s before a gradual easing into the weekend. Long-term models suggest a modest cooldown by next weekend, but no rain relief is in sight. Until then, Tucson enjoys classic desert fall weather: bright, dry, and deceptively warm under endless blue skies.
Five-Day Forecast for Tucson, AZ:
Mon: 94/65 – Sunny; light southeast breeze.
Tue: 97/70 – Hot, dry; afternoon glare along I-10.
Wed: 98/71 – Sunny and very warm; UV index high.
Thu: 98/70 – Mostly sunny; continued heat.
Fri: 99/72 – Hot; slim 10% chance of late showers.
