Salt Lake City in May: what to expect

May is the transition month in the Salt Lake Valley: winter is gone, summer has not arrived. Expect mild, mostly dry days with a high near 22 °C (72 °F) and nights that still drop to about 9 °C (48 °F), so a jacket matters after sunset. Rain usually comes as short afternoon showers rather than all-day storms, and the month is one of the wetter ones of the year in the valley.

The mountains are a different season. Snow persists above roughly 2,400–2,500 m, and canyon roads and high trails can stay closed into late May or early June. If your plan is a hike in the Wasatch, check current road and trail conditions before you drive up; valley trails such as those along the foothills are usually clear and green by mid-month.

Daylight is long — sunrise before 6:30am and sunset after 8:30pm by late May — which is why locals treat this as prime after-work hiking and patio season.

The first three weeks of May are one of the quietest good-weather windows of the year. Hotels in downtown Salt Lake City and near the airport are usually easy to book at short notice, and rates sit below the June–August peak. Expect crowds at 2 of 5 and prices at 2–3 of 5 for most of the month.

That changes on Memorial Day weekend, the last Monday of May, when the US summer travel season opens. Rates and occupancy jump for that Friday–Monday, campsites in the canyons fill, and popular trailheads and brunch spots get busy. If your dates are flexible, either book that weekend early or shift your trip to the first half of the month.

Convention calendars also move city hotel prices more than the season does; check whether a large event is in town on your dates before assuming a quiet week.

May is a shoulder-season month for events in Salt Lake City: the ski season has wound down and the big summer festivals have not started. The reliable fixtures are Memorial Day weekend at the end of the month and the general opening of the outdoor season — farmers markets, patio dining and canyon access.

Dates for specific festivals, concerts and races change every year, so confirm before you build a trip around one. The Utah state tourism office and Visit Salt Lake publish current calendars.

May is the month to use the valley and the lower foothills. Walk or bike the Jordan River Parkway, the Bonneville Shoreline Trail and the trails above the University of Utah, all usually snow-free and green. Big Cottonwood and Little Cottonwood canyons are worth the drive for scenery, but check gate and road status first.

The Great Salt Lake shoreline and Antelope Island State Park are at their most comfortable now: mild temperatures, fewer insects than in June, and bison and birds active. On the Wasatch Back, Park City's lower trails and town are open even when the upper mountain is not.

This is also a good month for a day trip to the Bonneville Salt Flats or a drive into the Wasatch Range before summer heat and haze. Save the high alpine hikes for June or later.

Pack for two seasons in one day. Mornings and evenings need a light jacket or fleece; midday is t-shirt weather. Bring a compact rain shell for the short showers, sunglasses and sunscreen — the altitude means stronger UV than most visitors expect — and shoes you can hike in if you plan on foothill trails.

If you are heading into the canyons or higher elevations, add a warm mid-layer and check whether snow gear is still needed. A refillable water bottle is useful: the dry air and altitude make dehydration easy to miss.

April is cooler and wetter, with more snow still on the mountains. June brings hotter valley days, the start of the busy summer season and full access to high country. If you want the best overall balance of weather, crowds and price, May and September are the two months to compare.