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Arco, ID Weather

Today: Mostly Sunny, high 51°F, low 33°F. Hourly and 7-day forecast from the National Weather Service. Times are local (MDT).

Arco, ID current weather

41°F

Sunny

Forecast for this hour. No recent report from a nearby station.

H 51° / L 33°

  • No rain expected in the next 12 hours

No recent station report. NWS hourly forecast updated 10/29/2026, 4:31 AM PT

Hourly forecast

NWS, updated 10/29/2026, 4:31 AM PT

  1. Now41°
  2. 12 PM45°
  3. 1 PM48°
  4. 2 PM50°
  5. 3 PM50°
  6. 4 PM51°
  7. 5 PM49°
  8. 6 PM48°
  9. 7 PM45°
  10. 8 PM41°
  11. 9 PM38°
  12. 10 PM37°
  13. 11 PM36°
  14. 12 AM36°Fri
  15. 1 AM36°
  16. 2 AM36°
  17. 3 AM35°
  18. 4 AM35°
  19. 5 AM35°
  20. 6 AM33°18%
  21. 7 AM35°15%
  22. 8 AM34°
  23. 9 AM36°
  24. 10 AM41°
  25. 11 AM46°
  26. 12 PM49°
  27. 1 PM52°14%
  28. 2 PM52°18%
  29. 3 PM53°15%
  30. 4 PM54°12%
  31. 5 PM52°
  32. 6 PM52°21%
  33. 7 PM48°21%
  34. 8 PM45°21%
  35. 9 PM42°21%
  36. 10 PM40°21%
  37. 11 PM39°21%
  38. 12 AM38°43%Sat
  39. 1 AM37°43%
  40. 2 AM36°43%
  41. 3 AM36°43%
  42. 4 AM35°43%
  43. 5 AM35°43%
  44. 6 AM35°65%
  45. 7 AM35°65%
  46. 8 AM35°65%
  47. 9 AM36°65%
  48. 10 AM40°65%

7-day forecast

Tap a day for details

  • Today10/29Low 33°High 51°

    Today: Mostly sunny. High near 51, with temperatures falling to around 49 in the afternoon. East southeast wind 2 to 6 mph.

    Tonight: Mostly cloudy. Low around 33, with temperatures rising to around 35 overnight. North northeast wind around 6 mph.

    Mostly Sunny
  • Fri10/3043% chance of precipitationLow 34°High 54°

    Friday: Mostly cloudy. High near 54, with temperatures falling to around 52 in the afternoon. East wind around 6 mph. Chance of precipitation is 20%.

    Friday Night: A slight chance of rain before midnight, then widespread fog and a chance of rain. Mostly cloudy, with a low around 34. Northwest wind around 5 mph. Chance of precipitation is 40%.

    Mostly Cloudy
  • Sat10/3194% chance of precipitationLow 34°High 51°

    Saturday: Widespread fog and rain likely. Mostly cloudy, with a high near 51. East northeast wind 2 to 6 mph. Chance of precipitation is 70%.

    Saturday Night: Showers and thunderstorms before midnight, then rain. Cloudy, with a low around 34. Chance of precipitation is 90%.

    Widespread Fog
  • Sun11/189% chance of precipitationLow 29°High 47°

    Sunday: Rain. Mostly cloudy, with a high near 47. Chance of precipitation is 90%.

    Sunday Night: A chance of rain before 11pm, then a slight chance of rain and snow between 11pm and 5am. Partly cloudy, with a low around 29. Chance of precipitation is 40%.

    Light Rain
  • Mon11/2Low 28°High 49°

    Monday: Sunny, with a high near 49.

    Monday Night: Partly cloudy, with a low around 28.

    Sunny
  • Tue11/3Low 29°High 49°

    Tuesday: Mostly sunny, with a high near 49.

    Tuesday Night: Mostly cloudy, with a low around 29.

    Mostly Sunny
  • Wed11/4Low 31°High 52°

    Wednesday: Mostly sunny, with a high near 52.

    Wednesday Night: Partly cloudy, with a low around 31.

    Mostly Sunny

Forecast for 43.629, -113.302 from the NWS PIH office, updated 10/29/2026, 4:31 AM PT · Official forecast on weather.gov

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now41°Sunny0%2 mph
  2. 12 PM45°Sunny0%3 mph
  3. 1 PM48°Sunny0%5 mph
  4. 2 PM50°Mostly Sunny0%5 mph
  5. 3 PM50°Mostly Sunny0%6 mph
  6. 4 PM51°Mostly Sunny0%6 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (up to 24 hours) and GOES

Latest

Frequently asked questions

What is the high temperature today in Arco, ID?
The National Weather Service forecast for today calls for a high near 51°F. Mostly Sunny.
Will it rain in Arco, ID in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What time is sunrise and sunset in Arco, ID today?
Sunrise is about 8:05 AM MDT and sunset is about 6:28 PM MDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Arco, ID?
At Arco, the 1991 to 2020 normal high in October is 60°F and the normal low is 31°F.

Nearby hazards

Idaho hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: None reported

UV and air quality forecast

EPA and AirNow

AQI forecast today (Ketchum)
11GoodPM2.5
AQI forecast tomorrow (Ketchum)
14GoodPM2.5

UV index guide · Air quality

Drought

By county

Butte County, week of 10/27/2026

90% of the county is in moderate drought or worse.

Sun and moon

Local time, center of the area

Sunrise
8:05 AM
Sunset
6:28 PM
Daylight
10 hr 23 min
Moon
Waning Gibbous 86% lit
First light (civil dawn)
7:35 AM
Last light (civil dusk)
6:57 PM
Moonrise
8:50 PM
Moonset
12:34 PM

Normal October weather

Climate

Normal October high 60°, low 31°, precipitation 0.71 in for the month. 1991 to 2020 normals at Arco, 0 mi away.

Other places nearby

Data sources

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About this data

Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.

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