Mt Lemmon Road Conditions & Visitor Essentials

What to Know Before You Drive Up Mt. Lemmon

The Catalina Highway is the only paved road to Summerhaven and the summit, and it climbs roughly 5,600 vertical feet in about 27 miles — from saguaro desert to aspen forest in under an hour. That climb is what makes Mt. Lemmon special, and it is also why conditions here change fast. This is the practical page: how to check whether the road is open, when chains are required, where to fill up (there is no gas on the mountain), whether your phone will work, where to park in Summerhaven, what things cost, and what to pack.

The Catalina Highway (SR 391, the Sky Island Parkway) climbing from the desert floor toward Summerhaven.

1. Check Road Conditions Before You Leave Tucson

This is the single most useful step, especially from November through March. Road restrictions on the Catalina Highway happen on average 5 to 15 days each winter, and they are usually temporary while plows clear the road.

Then work down this list. Each source covers something the others do not:

• Highway status: AZ 511, the state's own road and closure map — the fastest read on whether the highway is being held.
• County road closures: Pima County road closure updates.
• Forest land, trails and campgrounds: Coronado National Forest alerts — closures here do not always show up as road closures.
• Weather and what it looks like right now: our Mt Lemmon weather page, webcams and forecast links, plus mtlemmonweather.com for mountain-specific weather.
• Everything else that can close: Is Mt. Lemmon open? walks through the five things that shut down and how to check each one.

When the road closes

Heavy snow can shut the highway entirely for a few hours while plows work, and it typically reopens the same day. On the busiest snow weekends, the Sheriff's Department can also close the road at the base when Summerhaven fills up — if that happens, there is simply nowhere to park at the top. Our advice on a snow day: come early, or plan to arrive after the morning rush.

2. Chains, 4WD and Winter Driving

When snow is on the highway, restrictions go into effect: generally only vehicles with four-wheel drive, all-wheel drive, or chains are allowed past the closure point. The road is not a place to test an unfamiliar car.

• Chains: carry them if you don't have 4WD — they are inexpensive online or at Tucson auto parts stores, and having them means you don't turn around at the gate.
• Tires: tread matters more than anything else. Worn tires are the usual reason a car slides on the climb.
• Drive for the conditions: the speed limit is 35 mph and it is enforced. Slow down on the curves, and use the pullouts to let faster traffic by.
• Arrive and leave in daylight when conditions are marginal. The drive down in the dark, on ice, is the part people underestimate.
• Do not park on the shoulder to play in the snow on the way up — it blocks plows and emergency vehicles, and it is where cars get hit.
• Ask us to shift your arrival: during storms we sometimes ask guests to arrive a few hours early to get them in before the snow. Flexibility on both sides is what makes a snow trip work.

Full winter checklist in our Mt. Lemmon snow travel prep guide.

Most of the drive is one long overlook — use the pullouts instead of stopping in the road.

3. Fuel, Food and Supplies: Fill Up in Tucson

What you can count on up here:

• Groceries and forgotten essentials: the Mt. Lemmon General Store in Summerhaven carries basic groceries, drinks, firewood, souvenirs — and the famous homemade fudge. There is an ATM there as well.
• Restaurants: Summerhaven and Ski Valley both have food, roughly 1.7 miles from our cabins. See the Mt. Lemmon dining guide for hours, which shift with the seasons.
• Cooking in: every one of our cabins has a kitchen with a stove, microwave and fridge/freezer, plus a gas grill outside. Bringing groceries up is the easiest way to eat on your own schedule.

The General Store in Summerhaven — groceries, firewood, fudge and an ATM.

4. Cell Service and Staying Connected

Cell coverage on the mountain is spotty and carrier-dependent. You will usually have signal on parts of the drive and in pockets of Summerhaven, but you should not count on a call or a text going through when you need it.

• Download offline maps before you leave Tucson. This is the one prep step people skip and then regret.
• Every cabin has its own Wi-Fi. The network is named Cabin (number) and the password is printed on the router — the white box on the wall to the left of the TV. Turn on Wi-Fi calling and your phone works normally over the cabin connection.
• Messaging us: text (520) 277-2478 for anything about your stay. If you are on an international number, message us on Facebook (@MtLemmonHotel) instead — we can't text those numbers back.
• Emergency: 911 works, but give your exact location — milepost markers on the Catalina Highway are the fastest way for responders to find you.

5. Where to Park in Summerhaven

Parking has been the long-running complaint up here, and it got better in 2026: Pima County and the Forest Service completed a new Summerhaven parking lot with 75 spaces, plus 21 more spaces along Sabino Canyon Park Road, along with repaved roadway and repainted lane lines and crosswalks from the base of the mountain to Ski Valley.

Summerhaven is a walkable little village — park once and stroll between shops, restaurants and trails.

• Arrive early. The lot fills on summer holiday weekends and on any snow day. Before 10 AM is the difference between parking and circling.
• Marshall Gulch trailhead and picnic area are closed for renovation through the end of 2026, including the parking and restrooms. The Arizona Trail and Marshall Gulch trails remain open to hikers, but you need to park at the new Summerhaven lot and walk in.
• Do not park on the shoulder, in a driveway, or on private property. You will be towed, and it is the fastest way to ruin a mountain day.
• Staying with us? Our guests park at the hotel, in Summerhaven — no lot hunting required.

6. Fees and Passes

Most of what you come up here for is free. No fee is charged across the vast majority of the Coronado National Forest — trails, most trailheads and dispersed areas cost nothing.

• Rose Canyon Lake: $11 per vehicle for day use; a concessionaire annual day-use pass runs about $72. Camping there is by reservation. Details in our Rose Canyon Lake guide and Mt. Lemmon camping guide.
• Developed sites: a handful of improved day-use areas charge a small fee or require a pass — signage at the entrance is the authority.
• Ski Valley: lift tickets and rentals are separate; see Ski Valley.

7. Safety, Altitude and Wildlife

• Altitude: Summerhaven sits around 8,000 ft and the summit reaches 9,171 ft. Most visitors notice nothing, but the air is noticeably thinner for the first few hours — hydrate, take the first hike easy, and go slower than you would in Tucson.
• Medical: there is no hospital or urgent-care clinic on the mountain. The nearest emergency room is in Tucson, roughly 45–60 minutes back down the highway. Bring any medication you might need.
• Weather swings: the mountain runs about 30°F cooler than Tucson. A 95°F day in the city can be 65°F up here, and afternoon monsoon storms build quickly in July and August.
• Wildlife: this is black bear, coatimundi and mountain lion country. Store food in your cabin, never feed wildlife, and keep pets leashed. More in our wildlife guide and dog-friendly guide.
• Fire: fire restrictions are common in spring and early summer. Check Coronado National Forest alerts before lighting anything, and use only established fire rings.
• Sun and elevation: the UV is stronger up here. Sunscreen and a hat, even when it is cool.

8. What to Pack, by Season

Quick Answers

What are the Mt. Lemmon road conditions today?

Call the 24-hour Pima County road line at (520) 351-3351 for the current status, and check AZ 511 for the highway itself. Conditions change fast enough in winter that today's answer is not yesterday's — the hotline is updated at nights and on weekends, when the websites are not.

Where can I find Mt. Lemmon road information?

Four places, in this order: the road hotline at (520) 351-3351 for a recorded status, AZ 511 for highway closures, Pima County for county road updates, and the Coronado National Forest alerts page for trail and campground closures. This page collects the practical side of all of it: chains, fuel, cell service, parking and fees.

What is the Mt. Lemmon road conditions phone number?

(520) 351-3351 — the Pima County Sheriff's Department road condition recording for the Catalina Highway, available 24 hours a day and updated at nights and on weekends when websites are not.

How do I check for Mt. Lemmon closures?

Start with the (520) 351-3351 recording for the highway. Then check the Coronado National Forest alerts page, because a Forest Service closure order — like the current Marshall Gulch order — can shut a trailhead or picnic area without the road closing at all. Our Is Mt. Lemmon open? page explains which closures are which.

Is the road to Mt. Lemmon open right now?

Call the 24-hour Pima County road line at (520) 351-3351. It gives the current status of the Catalina Highway, including any closures or chain restrictions. We cover the full picture in our weather and cameras guide.

Do I need chains or four-wheel drive?

Only when restrictions are in effect, which happens on average 5 to 15 days each winter. During restrictions, only vehicles with 4WD, AWD or chains are allowed up. The rest of the year the highway is a normal paved mountain road — any car can make the drive.

Is there a gas station on Mt. Lemmon?

No. There is no fuel in Summerhaven or anywhere on the mountain. Fill up in Tucson, and at the latest at Tanque Verde and Bear Canyon just before the base of the Catalina Highway.

Will my cell phone work on Mt. Lemmon?

Sometimes. Coverage is spotty and varies by carrier and location. Every cabin at Mt. Lemmon Hotel has its own Wi-Fi (network "Cabin (number)", password on the router), so turn on Wi-Fi calling and you are covered. Download offline maps before you drive up.

Where do I park in Summerhaven?

A new Summerhaven parking lot with 75 spaces opened in 2026, plus 21 more spaces along Sabino Canyon Park Road. Arrive early on summer holiday weekends and snow days. Marshall Gulch trailhead and picnic area parking is closed for renovation through the end of 2026 — use the new lot and walk in.

Is there an entrance fee to drive up Mt. Lemmon?

No. Driving the Catalina Highway and using most trails and trailheads is free. Rose Canyon Lake charges $11 per vehicle for day use, and a few developed day-use sites charge a small fee. Ski Valley lift tickets are separate.

How long does the drive take, and is it scary?

About 45 minutes from northeast Tucson to Summerhaven, covering roughly 27 miles with a 35 mph speed limit and plenty of curves. It is a good, well-maintained paved road with pullouts for slower traffic — most people find it beautiful rather than intimidating. In snow, treat it with respect and check the hotline first.