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I-90 Montana Road Conditions
Radar and live pavement conditions on the 549 miles of I-90 in Montana — plus closures, road work and city-by-city weather across the state.
Updated Oct 8, 2026 9:30 PM MDT · Mostly dry
Lowest 55°F near Missoula, Montana · Highest wind 11 mph near Billings, Montana
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I-90 runs 549 miles across Montana. It passes Missoula, Billings and Bozeman.
- Interstate: I-90
- State: Montana
- Length in state: 549 mi
Weather data from Oct 8, 2026 9:30 PM MDT
55°F
66°F
11 mph
29.81-29.96 inHg
Conditions along I-90 in Montana
Montana road conditions & Montana 511
Dry
- Missoula 55°F · 0 mph wind · Dry
- Billings 64°F · 10 mph wind · Dry
- Bozeman 57°F · 6 mph wind · Dry
I-90 crosses 549 miles of Montana, between the Wyoming line and the Idaho line. That is 18% of I-90's 3,020 miles.
Inside Montana it meets I-94 at Billings, and I-15.
By mile marker, I-90 passes Missoula 104 · Bozeman 304 · Billings 446.
No full closures are reported on I-90 in Montana as of Oct 8, 2026 9:30 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 |
|---|---|---|---|---|---|---|---|
| Missoula | 37.9" | 39.4 | 164.4 | 126.1 | Sep 24 | May 18 | 25.4 |
| Billings | 55" | 38.7 | 138 | 101.1 | Oct 4 | May 5 | 28.4 |
| Bozeman | 91" | 54.1 | 182.5 | 149 | Sep 18 | May 31 | 12.2 |
NOAA 1991–2020 Climate Normals, from 3 weather stations in Montana. A dash is a figure that station does not report, not a zero.
Towns Along I-90 in Montana
From Missoula to Hardin, with the position of each town measured along this stretch itself — counted from the Missoula end, not from a state milepost, so it will not match the numbers on the signs.
- 102 mi Missoula 1.6 mi off the road
- 183 mi Deer Lodge
- 275 mi Three Forks 1.1 mi off the road
- 285 mi Manhattan
- 294 mi Belgrade
- 303 mi Bozeman 1.0 mi off the road
- 330 mi Livingston 1.1 mi off the road
- 365 mi Big Timber
- 403 mi Columbus
- 442 mi Billings 2.5 mi off the road
- 492 mi Hardin
Places from the US Census Gazetteer and population estimates, both public domain; distances measured along this page's own route geometry.
Summaries fetched Oct 8, 2026 6:04 AM MDT
Missoula, MT weather
- Current weather conditions in Missoula, MT indicate a temperature of 36.7°F with a dew point of 32.9°F
- The humidity is relatively high at 86%, and the atmospheric pressure is measured at 30.16 inHg
- Wind is light, blowing from the southeast at approximately 6 mph
- Visibility is good at 9.9 miles, and the weather is clear
- There are no active weather alerts at this time.
Billings, MT weather
- The current weather in Billings, MT, shows clear skies with a temperature of 47°F and a dew point of 32°F
- The humidity level is at 55%, indicating a comfortable atmosphere
- Winds are coming from the west-southwest at approximately 11 mph
- The atmospheric pressure is measured at 30.06 inHg, which is typical for this region
- Visibility is good at 10.0 miles
- Overall, conditions are favorable with no significant weather alerts at this time.
I-90 in Montana Road Weather FAQ
- Is Interstate 90 in Montana closed right now?
- No full closures are reported on I-90 in Montana. No lane closures or roadworks are reported either.
- What are I-90 in Montana road conditions today?
- The map on this page colors the route along I-90 in Montana by what is on the pavement right now — dry, wet, slush, snow or ice — from radar and surface data, last updated Oct 8, 2026 9:30 PM MDT. Right now temperatures run from 55°F to 66°F and the strongest wind is 11 mph.
- Where are Montana road closures reported officially?
- Montana's official traveler information service is MDT Travel Info, at mdt511.com, and it is where closures and restrictions are reported.
- How often are I-90 in Montana 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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