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St. Anthony, ID 83421 Weather

Today: Mostly Sunny, high 53°F, low 33°F. Hourly and 10-day forecast from the National Weather Service. Times are local (MDT).

St. Anthony, ID 83421 current weather

25°F

Sunny

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

H 53° / 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. Now25°
  2. 8 AM26°
  3. 9 AM29°
  4. 10 AM36°
  5. 11 AM43°
  6. 12 PM47°
  7. 1 PM50°
  8. 2 PM52°
  9. 3 PM53°
  10. 4 PM53°
  11. 5 PM52°
  12. 6 PM49°
  13. 7 PM47°
  14. 8 PM41°
  15. 9 PM39°
  16. 10 PM38°
  17. 11 PM37°
  18. 12 AM37°Fri
  19. 1 AM37°
  20. 2 AM37°
  21. 3 AM36°
  22. 4 AM36°
  23. 5 AM36°
  24. 6 AM35°
  25. 7 AM36°
  26. 8 AM35°
  27. 9 AM38°
  28. 10 AM45°
  29. 11 AM51°
  30. 12 PM55°
  31. 1 PM56°
  32. 2 PM57°
  33. 3 PM58°
  34. 4 PM56°
  35. 5 PM56°11%
  36. 6 PM52°25%
  37. 7 PM49°25%
  38. 8 PM46°25%
  39. 9 PM44°25%
  40. 10 PM43°25%
  41. 11 PM42°25%
  42. 12 AM41°62%Sat
  43. 1 AM40°62%
  44. 2 AM39°62%
  45. 3 AM39°62%
  46. 4 AM39°62%
  47. 5 AM39°62%
  48. 6 AM39°68%

10-day forecast

Tap a day for details

  • Today10/29Low 33°High 53°

    Today: Mostly sunny, with a high near 53. North wind 3 to 7 mph.

    Tonight: Mostly cloudy. Low around 33, with temperatures rising to around 36 overnight. East northeast wind 2 to 8 mph.

    Mostly Sunny
  • Fri10/3062% chance of precipitationLow 35°High 58°

    Friday: Mostly cloudy. High near 58, with temperatures falling to around 56 in the afternoon. Southeast wind around 8 mph, with gusts as high as 18 mph.

    Friday Night: Rain likely. Mostly cloudy, with a low around 35. Southeast wind around 6 mph. Chance of precipitation is 60%.

    Mostly Cloudy
  • Sat10/3190% chance of precipitationLow 35°High 52°

    Saturday: Rain before 3pm, then showers and thunderstorms. Mostly cloudy, with a high near 52. South southeast wind around 5 mph. Chance of precipitation is 80%.

    Saturday Night: Rain. Mostly cloudy, with a low around 35. Chance of precipitation is 90%.

    Light Rain then Showers And Thunderstorms
  • Sun11/196% chance of precipitationLow 30°High 48°

    Sunday: Rain. Cloudy, with a high near 48. Chance of precipitation is 100%.

    Sunday Night: Rain before 2am, then a chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 80%.

    Light Rain
  • Mon11/220% chance of precipitationLow 26°High 48°

    Monday: A slight chance of rain and snow before 11am. Mostly sunny, with a high near 48. Chance of precipitation is 20%.

    Monday Night: Partly cloudy, with a low around 26.

    Slight Chance Rain And Snow then Mostly Sunny
  • Tue11/3Low 26°High 48°

    Tuesday: Mostly sunny, with a high near 48.

    Tuesday Night: Partly cloudy, with a low around 26.

    Mostly Sunny
  • Wed11/4Low 28°High 53°

    Wednesday: Mostly sunny, with a high near 53.

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

    Mostly Sunny
  • Thu11/5Model blend10% chance of precipitationLow 30°High 54°

    Thursday: Partly cloudy. High near 54°. Low that night near 30°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Fri11/6Model blend20% chance of precipitationLow 31°High 54°

    Friday: Partly cloudy. High near 54°. Low that night near 31°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Sat11/7Model blend10% chance of precipitationLow 30°High 54°

    Saturday: Partly cloudy. High near 54°. Low that night near 30°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 44.010, -111.566 from the NWS PIH office, updated 10/29/2026, 4:31 AM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KRXE (Rexburg/Madison Cnty, 17 mi), model run 10/29/2026, 2:00 AM MDT

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. Now25°Sunny0%6 mph
  2. 8 AM26°Sunny0%7 mph
  3. 9 AM29°Sunny0%7 mph
  4. 10 AM36°Sunny0%6 mph
  5. 11 AM43°Sunny0%3 mph
  6. 12 PM47°Sunny0%3 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 St. Anthony, ID 83421?
The National Weather Service forecast for today calls for a high near 53°F. Mostly Sunny.
Will it rain in St. Anthony, ID 83421 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 is the 10-day forecast for St. Anthony, ID 83421?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 5 to Nov 7) come from the NOAA National Blend of Models, with highs near 54°F. Model guidance this far out often changes.
What time is sunrise and sunset in St. Anthony, ID 83421 today?
Sunrise is about 7:59 AM MDT and sunset is about 6:20 PM MDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in St. Anthony, ID 83421?
At Ashton 1n, the 1991 to 2020 normal high in October is 57°F and the normal low is 32°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 (Idaho Falls)
18GoodPM2.5
AQI forecast tomorrow (Idaho Falls)
20GoodPM2.5

UV index guide · Air quality

Drought

By county

Fremont County, week of 10/20/2026

58% of the county is in moderate drought or worse.

Sun and moon

Local time, center of the area

Sunrise
7:59 AM
Sunset
6:20 PM
Daylight
10 hr 21 min
Moon
Waning Gibbous 87% lit
First light (civil dawn)
7:29 AM
Last light (civil dusk)
6:50 PM
Moonrise
8:42 PM
Moonset
12:28 PM

Normal October weather

Climate

Normal October high 57°, low 32°, precipitation 1.63 in for the month. 1991 to 2020 normals at Ashton 1n, 7 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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