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Idaho Road Conditions
Idaho 511 Road Conditions
Radar and live pavement conditions on I-15, I-84 West and I-90 — plus closures, road work and city-by-city weather across Idaho.
Updated Sep 15, 2026 2:28 AM UTC · Mostly dry, damp in places
Lowest 52°F near Coeur d'Alene, Idaho · Highest wind 15 mph near Pocatello, Idaho
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Idaho carries 794 miles of interstate: I-15, I-84 West and I-90. The high crossings are Lookout Pass at 4,711 ft, and they are where winter closes the road first. Idaho Falls, Pocatello, Boise and Twin Falls sit on these routes.
- Interstate miles: 794 mi
- Interstates: I-15, I-84 West and I-90
Weather data from Sep 15, 2026 2:28 AM UTC
52°F
71°F
15 mph
29.80-30.09 inHg
Conditions across Idaho
Idaho
Dry
- Coeur d'Alene 55°F · 3 mph wind · Dry
- Idaho Falls 61°F · 12 mph wind · Dry
- Pocatello 62°F · 8 mph wind · Dry
16 current reports along the route, including 2 full closures. The 8 most serious are listed below. Always check with the responsible state DOT before setting off.
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Road closed
Bridge construction on I-15-BL Both Directions from Commercial St to Willow Ln. All lanes closed. 9/14/2026 7:00 AM MT…
Bridge construction on I-15-BL Both Directions from Commercial St to Willow Ln. All lanes closed. 9/14/2026 7:00 AM MT to 1/8/2027 7:00 PM MT Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 12ft Length Restriction: 50ft
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Lanes blocked
Major Bridge construction on I-90 Eastbound from MM (39) to MM (41). 1 Left lane closed. 3/2/2026 7:00 AM to 11/2/2026…
Major Bridge construction on I-90 Eastbound from MM (39) to MM (41). 1 Left lane closed. 3/2/2026 7:00 AM to 11/2/2026 6:00 PM Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 12ft 6in Speed Restriction: 45mph Activities: Mandatory Speed Limit in Force.
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Lanes blocked
Major Bridge construction on I-90 Westbound from MM (39) to MM (41). 1 Right lane closed. 3/2/2026 7:00 AM to 11/2/2026…
Major Bridge construction on I-90 Westbound from MM (39) to MM (41). 1 Right lane closed. 3/2/2026 7:00 AM to 11/2/2026 6:00 PM Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 12ft 6in Length Restriction: 110ft Speed Restriction: 45mph Activities: Mandatory Speed Limit in Force.
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Restriction
Long term road construction on I-15 Both Directions from Inkom to Portneuf River. 3/2/2026 7:00 PM to 10/31/2026 7:00…
Long term road construction on I-15 Both Directions from Inkom to Portneuf River. 3/2/2026 7:00 PM to 10/31/2026 7:00 PM Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 12ft
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Restriction
Road construction on SH-25 Both Directions from S Birch St to S Buchanan St. All Lanes Intermittent. 7/6/2026 7:00 AM…
Road construction on SH-25 Both Directions from S Birch St to S Buchanan St. All Lanes Intermittent. 7/6/2026 7:00 AM to 7/1/2027 5:00 PM Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 11ft Activities: Consider Alternative Route, Use Caution.
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Restriction
Road construction on SH-81 Westbound Near Clark St. Lane Alternating. 9/9/2026 6:00 AM MT to 9/23/2026 6:00 PM MT Mon…
Road construction on SH-81 Westbound Near Clark St. Lane Alternating. 9/9/2026 6:00 AM MT to 9/23/2026 6:00 PM MT Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 12ft Activities: Look Out for Flagger, Reduced to Single Lane, Alternating Direction of Travel, Use Caution.
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Restriction
Road construction on ramp from I-84 Westbound to I-84-BL Eastbound. 9/9/2026 12:27 PM MT to 11/28/2026 5:00 PM MT Mon…
Road construction on ramp from I-84 Westbound to I-84-BL Eastbound. 9/9/2026 12:27 PM MT to 11/28/2026 5:00 PM MT Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 14ft Activities: Use Caution.
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Restriction
Road construction on ramp from I-84-BL Eastbound to I-84 Westbound. 9/9/2026 12:27 PM MT to 11/28/2026 5:00 PM MT Mon…
Road construction on ramp from I-84-BL Eastbound to I-84 Westbound. 9/9/2026 12:27 PM MT to 11/28/2026 5:00 PM MT Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 14ft Activities: Use Caution.
Interstates Through Idaho, Road by Road
Each stretch has its own live conditions, closures and cameras for the Idaho miles only — the weather 500 miles away on the same interstate says nothing about this drive.
- I-15 Idaho Road Conditions 196 mi
- I-84 Idaho Road Conditions 275 mi
- I-90 Idaho Road Conditions 74 mi
| Place | Snow a year | Snow days | Freezing nights | Freeze–thaw days | First freeze | Last freeze | Days over 90°F |
|---|---|---|---|---|---|---|---|
| Boise | 19.2" | 19.4 | 100.9 | 82.1 | Oct 15 | Apr 30 | 47.5 |
| Idaho Falls | 36.9" | 38.6 | 180.3 | 125.7 | Sep 19 | May 23 | 21.6 |
| Lewiston | 10.5" | 10.6 | 75.9 | 63.2 | Oct 23 | Apr 12 | 40.1 |
| Pocatello | 43.4" | 42.2 | 163.6 | 123.1 | Sep 19 | May 22 | 29.7 |
NOAA 1991–2020 Climate Normals, from 4 weather stations in Idaho. A dash is a figure that station does not report, not a zero.
Snowfall across Idaho is not one number: Lewiston averages 10.5" a year and Pocatello averages 43.4".
Every figure above is a town or a city. The summits are a different climate: Lookout Pass has its own page with the readings at the top and a six-day summit forecast.
Driving in Idaho Month by Month
What the road normally throws at you, month by month, from NOAA's 1991–2020 normals for Idaho's own stations. Each month names its dominant hazard and the place that measured it — this is what the month is usually like, not a forecast and not a restriction.
- January Snow 5.8 in of snow at Idaho Falls, 19.2 days that never thaw at Idaho Falls
- February Snow 6.8 in of snow at Idaho Falls, 10.8 days that never thaw at Idaho Falls
- March Snow 3.5 in of snow at Idaho Falls, 1.7 days that never thaw at Idaho Falls
- April Freeze–thaw 15.8 nights that freeze and days that thaw at Idaho Falls
- May Quiet 5.3 wet days at Lewiston is the most the normals report
- June Quiet 4.3 wet days at Lewiston is the most the normals report
- July Heat 19 days above 90°F at Boise
- August Heat 16.8 days above 90°F at Boise
- September Quiet 2.3 wet days at Lewiston is the most the normals report
- October Freeze–thaw 17.6 nights that freeze and days that thaw at Idaho Falls
- November Snow 7.2 in of snow at Idaho Falls, 4.7 days that never thaw at Idaho Falls
- December Snow 9.9 in of snow at Idaho Falls, 18 days that never thaw at Idaho Falls
Summaries fetched Sep 14, 2026 12:02 PM UTC
Coeur d'Alene, ID weather
- Current weather conditions in Coeur D'Alene, ID, indicate a temperature of 50°F with a dew point of 47°F and humidity at 89%
- The wind is blowing from the southwest at 4 mph
- Visibility is reported at approximately 9.9 miles
- The weather is characterized by patchy fog
- There are no significant weather alerts at this time
- The atmospheric pressure stands at 30.12 inHg.
Idaho Falls, ID weather
- Current weather conditions in Idaho Falls, ID indicate a clear sky with a temperature of 44.8°F and a dew point of 32.4°F
- The humidity is at 62%, and the pressure is 30.06 inHg
- Winds are coming from the southwest at 8.4 mph
- There is a frost advisory in effect from 3:00 AM to 9:00 AM on September 15, 2026, which could impact outdoor activities during those hours
- Visibility is good at 9.9 miles
- No significant weather impacts are noted at this time.
Boise, ID weather
- In Boise, ID, the current weather is mostly cloudy with a temperature of 47°F and a dew point of 38°F
- The humidity level is at 73%, indicating a fairly moist atmosphere
- The wind is blowing from the northwest at a speed of 2 mph
- The pressure is measured at 30.06 inHg, and visibility is good at 9.9 miles
- There are no active weather alerts at this time, and the probability of precipitation is 0%, meaning no rain is expected.
Idaho Road Weather FAQ
- Are any roads closed in Idaho right now?
- Yes — 2 full closures are reported on the interstates in Idaho as of Sep 15, 2026 3:17 AM UTC. 14 lane closures, roadworks or restrictions are in force. They are listed under closures and road blocks on this page.
- What are Idaho road conditions today?
- The map on this page colors the interstates across Idaho by what is on the pavement right now — dry, wet, slush, snow or ice — from radar and surface data, last updated Sep 15, 2026 2:28 AM UTC. Right now temperatures run from 52°F to 71°F and the strongest wind is 15 mph.
- Which interstates run through Idaho?
- Idaho has 3 through interstates on this site: I-15, I-84 West and I-90 — about 794 miles of interstate across the state. Each has its own page for the Idaho stretch.
- Are there mountain passes in Idaho?
- Yes — one on this site, Lookout Pass at 4,711 ft. Each has its own summit page.
- Where are Idaho road closures reported officially?
- Idaho's official traveler information service is 511.idaho.gov, and it is where closures and restrictions are reported.
- How often are Idaho 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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