Tucson · guide · 2026–27 edition
The Tucson auto glass calendar, monsoon season included.
Windshields here live through frosty January mornings, a run of 100-degree days that can start in spring, and a monsoon that ends in the fall. Here is the year as the weather service measures it, plus the events that fill the roads, and what each month means for booking.
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At a glance
Tucson's year in one table
Weather figures are National Weather Service normals for 1991 to 2020 at Tucson. Event dates are from the organisers.
| Month | Normal high / low | Days 100°F+ | What is on | Booking note |
|---|---|---|---|---|
| January | 66.5° / 40.8° | 0 | Gem shows open January 27, 2027 | Late-morning slots skip the frost |
| February | 69.2° / 43.2° | 0 | Gem shows to February 14; rodeo February 20 to 28, 2027 | Allow extra time near the Convention Center on show days |
| March | 75.8° / 48.0° | 0, usually | Spring visitors | In 2026 the first 100° day came on March 19, the earliest on record |
| April | 82.9° / 53.3° | Under 1 | Driest stretch begins | Any time of day works |
| May | 91.8° / 61.8° | 4 | First 100° day averages May 18 | Morning slots get more popular |
| June | 101.2° / 71.1° | 21 | Monsoon season opens June 15 | Book early in the day, under cover |
| July | 100.2° / 76.3° | 19 | Wettest month, 2.21 inches | Morning, before storms build |
| August | 98.6° / 75.2° | 15 | Storms continue, 1.98 inches | Morning, with a carport if you have one |
| September | 95.1° / 70.4° | 8 | Monsoon season ends September 30 | Storm days still move appointments |
| October | 86.3° / 59.0° | 1 | The 68th hot day comes October 16 on average | Comfortable all day |
| November | 75.1° / 47.9° | 0 | El Tour de Tucson, November 21, 2026 | Plan around road closures on ride day |
| December | 65.5° / 40.5° | 0 | About five frosty mornings | Midday slots for cars parked outside |
A normal is a 30-year average. Single years swing a long way: Tucson had a record 112 days at 100° or more in 2024, 78 in 2025, and 77 in 2026 by September 10.
January and February
Frost, gems and the rodeo
Winter brings Tucson its biggest events. The gem, mineral and fossil shows run from January 27 to February 14 in 2027, with the main show, first held in 1955, at the Tucson Convention Center. Parking near downtown and along the freeway is tight for those three weeks, so if your car is at work in that part of town, a home appointment is often easier.
La Fiesta de los Vaqueros, the Tucson rodeo, follows from February 20 to 28, 2027. Its nine days bring event traffic of their own.
Mornings are the other winter factor. Tucson averages four nights at or below freezing in January, five in December and two in February. A windshield with a chip in it does not enjoy a frosty start followed by the defroster on full. If the car sleeps outside, scrape gently instead of pouring hot water on the glass, and pick a late-morning slot for the replacement.
March to May
The quiet months and an early start to the heat
Spring is the easy season for glass work. April, May and June are the driest months of the year, each averaging a quarter inch of rain or less, so almost any day and time is open.
It does not always stay mild for long. On average Tucson's first 100-degree day arrives on May 18, but in 2026 it came on March 19, the earliest in the weather service's records. If you have been putting off a cracked windshield since winter, spring is the time to book it, before the long run of hot afternoons begins.
June to September
Heat and the monsoon
Summer brings most of Tucson's 68 hot days: 21 in a normal June, 19 in July, 15 in August and 8 in September. A small crack tends to grow fastest now, because the sun heats the outside of the glass while the air conditioning cools the inside.
The weather service counts June 15 to September 30 as monsoon season. July is the wettest month of the year at 2.21 inches, and August is close behind. Storms here usually build in the afternoon, often with blowing dust ahead of the rain, so a morning appointment is the safe choice. If the car will be outside when a storm is coming, we call and move the time with you.
Summer habits that help
- Book the earliest slot you can, and park under a carport or in a garage if you have one.
- Leave a sunshade up until the technician arrives. It keeps the old glass and the dash cooler.
- After a storm, check for new chips from blown gravel and wipe the dust off the camera window behind the mirror.
October to December
Back to easy, with one big Saturday
By October the heat is mostly done; on average the year's 68th day at 100 degrees falls on October 16. Highs in the 80s make it a good month to replace glass that cracked over the summer.
November has one date to plan around. El Tour de Tucson rides on Saturday, November 21, 2026, with its Expo at the Tucson Convention Center from November 19. Roads along the routes close for the ride. If you live near a route, book a different day or let us know your street when you book.
December rounds the year off with short days and the first frosty mornings again.
If you leave for part of the year
Seasonal homes and parked cars
- A car that sits through a Tucson summer with a crack in the windshield usually comes back to a longer crack. Replace it before you leave if you can.
- If someone else will be at the house, a neighbour or a property manager can let the technician into a garage. Tell us who when you book.
- In gated communities, put us on the guest list for the date and leave the gate code.
- Leave the keys where the person meeting us can reach them, and make sure the car will start after weeks of sitting.
Pick a good week and book it
Same-day appointments are available in most areas. Text a photo and your VIN to (877) 350-5962, or call our Tucson line, (520) 492-2800. Installs run Monday to Saturday, 8am to 6pm.
Calendar questions
Want to plan around a trip or an event? Call (520) 492-2800.
When is monsoon season in Tucson?
The National Weather Service counts June 15 to September 30 as monsoon season. July is usually the wettest month, at 2.21 inches on the 1991 to 2020 normals.
How many 100-degree days does Tucson get?
68 in a normal year, on the 1991 to 2020 normals. The record is 112, set in 2024. In 2026 the count had reached 77 by September 10.
Can you replace a windshield in winter?
Yes. Winter days are mild, and we can pick a time after any frost has burned off when the car is parked outside.
When are the Tucson gem shows in 2027?
Visit Tucson lists the winter shows from January 27 to February 14, 2027. The main show is at the Tucson Convention Center.
From Bang AutoGlass
More on Tucson weather
Mobile glass service in Tucson heat and monsoon
How installs are planned around the hottest and stormiest weeks.
Why Arizona heat spreads cracks
The physics of stress cracks, explained in full.
Sources
Facts checked October 16, 2026
- Tucson monthly normals and extremes, 1991–2020, National Weather Service, Tucson
- Tucson 100-degree days by year, National Weather Service, Tucson
- Monsoon season dates, Arizona Daily Star
- Tucson gem shows, Visit Tucson
- Tucson Gem and Mineral Show, Wikipedia
- La Fiesta de los Vaqueros, 2027 dates, Tucson Rodeo
- El Tour de Tucson schedule, El Tour de Tucson
Things change. If something here is out of date, tell us on our Tucson line, (520) 492-2800.
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