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I-15 Utah Road Conditions
Radar and live pavement conditions on the 401 miles of I-15 in Utah — plus closures, road work and city-by-city weather across the state.
Updated Sep 10, 2026 7:18 PM MDT · Mostly dry
Lowest 82°F near Ogden, Utah · Highest wind 15 mph near Saint George, Utah
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I-15 runs 401 miles across Utah. It passes Saint George, Provo and Salt Lake City.
- Interstate: I-15
- State: Utah
- Length in state: 401 mi
Weather data from Sep 10, 2026 7:18 PM MDT
82°F
103°F
15 mph
29.50-29.79 inHg
Current I-15 in Utah Conditions by State
Utah I-15 in Utah road conditions
Dry
- Saint George 103°F · 9 mph wind · Dry
- Provo 87°F · 4 mph wind · Dry
- Salt Lake City 87°F · 4 mph wind · Dry
I-15 crosses 401 miles of Utah, between the Arizona line and the Idaho line. That is 28% of I-15's 1,433 miles.
Inside Utah it meets I-80 at Salt Lake City, I-84 West at Ogden, and I-70.
No full closures are reported on I-15 in Utah as of Sep 10, 2026 7:18 PM MDT, and no lane closures or roadworks either. Always check with the responsible state DOT before setting off.
| Place | Snow a year | Snow days | Freezing nights | Freeze–thaw days | First freeze | Last freeze | Days over 90°F |
|---|---|---|---|---|---|---|---|
| Saint George | 1.4" | 0.9 | 54.1 | 53.9 | Nov 17 | Mar 7 | 116.3 |
| Provo | 57.1" | 26.6 | 112.7 | 97.7 | Oct 19 | Apr 23 | 60.3 |
| Salt Lake City | 56.2" | 34.8 | 112.8 | 91.5 | Oct 24 | Apr 21 | 52.1 |
NOAA 1991–2020 Climate Normals, from 3 weather stations in Utah. A dash is a figure that station does not report, not a zero.
Every figure above is a town or a city. The summits are a different climate: Soldier Summit has its own page with the readings at the top and a six-day summit forecast.
Towns Along I-15 in Utah
From St. George to Garland, with the position of each town measured along this stretch itself — counted from the St. George end, not from a state milepost, so it will not match the numbers on the signs.
- 6 mi St. George
- 225 mi Nephi
- 260 mi Springville 1.4 mi off the road
- 265 mi Provo 2.2 mi off the road
- 283 mi Lehi
- 301 mi Taylorsville 2.5 mi off the road
- 310 mi Salt Lake City 1.1 mi off the road
- 325 mi Farmington
- 337 mi Sunset
- 344 mi Ogden 2.0 mi off the road
- 350 mi Farr West
- 383 mi Garland 1.4 mi off the road
Places from the US Census Gazetteer and population estimates, both public domain; distances measured along this page's own route geometry.
Summaries fetched Sep 10, 2026 6:07 AM MDT
Saint George, UT weather
- Current weather conditions in Saint George, UT indicate a clear sky with a temperature of 72°F
- The humidity level is at 26%, and the dew point is 35.6°F
- Winds are calm, blowing from 88° at 1 mph
- The atmospheric pressure is measured at 29.9 inHg
- Visibility is good at 10.0 miles, making for a pleasant day
- There are no active weather alerts or significant weather impacts at this time.
Salt Lake City, UT weather
- In Salt Lake City, UT, the current weather conditions are clear with a temperature of 65.1°F and a relative humidity of 25%
- The dewpoint is at 28.4°F, indicating dry air
- The atmospheric pressure is measured at 30.06 inHg
- Winds are light, blowing from the east-southeast at 1.7 mph
- Visibility is good at 9.9 miles
- There are no active weather alerts at this time.
I-15 in Utah Road Weather FAQ
- Is Interstate 15 in Utah closed right now?
- No full closures are reported on I-15 in Utah. No lane closures or roadworks are reported either.
- What are I-15 in Utah road conditions today?
- The map on this page colors the route along I-15 in Utah by what is on the pavement right now — dry, wet, slush, snow or ice — from radar and surface data, last updated Sep 10, 2026 7:18 PM MDT. Right now temperatures run from 82°F to 103°F and the strongest wind is 15 mph.
- How often are I-15 in Utah road conditions updated?
- The road surface and weather layers are rebuilt whenever this page is opened with data more than ten minutes old, and refreshed on a schedule in between, so nothing here is more than about two hours old even on a road nobody has looked at. Closures and road blocks are re-imported from the state 511 feeds every fifteen minutes, and the written state-by-state summaries are refreshed daily. Every section on this page carries the time its data was fetched.
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