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Irwin, ID 83428 Weather

Today: Partly Sunny, high 44°F, low 35°F. Hourly and 7-day forecast from the National Weather Service. Times are local (MDT).

Irwin, ID 83428 current weather

42°F

Partly Sunny

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

H 44° / L 35°

  • No rain expected in the next 12 hours

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

Hourly forecast

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

  1. Now42°
  2. 6 PM40°
  3. 7 PM39°
  4. 8 PM37°
  5. 9 PM37°
  6. 10 PM37°
  7. 11 PM37°
  8. 12 AM36°Fri
  9. 1 AM36°
  10. 2 AM36°
  11. 3 AM36°
  12. 4 AM36°
  13. 5 AM36°
  14. 6 AM36°
  15. 7 AM35°
  16. 8 AM35°
  17. 9 AM36°
  18. 10 AM38°
  19. 11 AM40°
  20. 12 PM42°
  21. 1 PM44°
  22. 2 PM44°
  23. 3 PM45°
  24. 4 PM43°
  25. 5 PM42°
  26. 6 PM42°11%
  27. 7 PM40°12%
  28. 8 PM40°12%
  29. 9 PM39°
  30. 10 PM38°38%
  31. 11 PM38°38%
  32. 12 AM38°19%Sat
  33. 1 AM38°26%
  34. 2 AM38°33%
  35. 3 AM38°36%
  36. 4 AM38°38%
  37. 5 AM38°55%
  38. 6 AM38°72%
  39. 7 AM37°72%
  40. 8 AM37°72%
  41. 9 AM37°72%
  42. 10 AM37°72%
  43. 11 AM36°72%
  44. 12 PM36°80%
  45. 1 PM36°80%
  46. 2 PM37°80%
  47. 3 PM37°80%
  48. 4 PM38°80%

7-day forecast

Tap a day for details

  • Today10/29Low 35°High 44°

    This Afternoon: Partly sunny. High near 44, with temperatures falling to around 42 in the afternoon. South wind around 5 mph.

    Tonight: Mostly cloudy, with a low around 35. Southeast wind 3 to 14 mph, with gusts as high as 20 mph.

    Partly Sunny
  • Fri10/3055% chance of precipitationLow 36°High 46°

    Friday: Partly sunny. High near 46, with temperatures falling to around 42 in the afternoon. South southeast wind 7 to 14 mph, with gusts as high as 20 mph.

    Friday Night: A chance of rain between 10pm and midnight, then a slight chance of rain and snow between midnight and 1am, then rain and snow likely. Mostly cloudy, with a low around 36. Southeast wind around 9 mph. Chance of precipitation is 60%.

    Partly Sunny
  • Sat10/3180% chance of precipitationLow 35°High 39°

    Saturday: Rain and snow likely before 9am, then rain and snow. Mostly cloudy, with a high near 39. Southeast wind around 8 mph. Chance of precipitation is 80%.

    Saturday Night: A chance of rain between midnight and 4am, then rain likely and patchy fog. Mostly cloudy, with a low around 35. Chance of precipitation is 70%.

    Rain And Snow
  • Sun11/191% chance of precipitationLow 31°High 37°

    Sunday: Rain and patchy fog before 2pm, then patchy fog and rain and snow between 2pm and 5pm, then rain and snow. Cloudy, with a high near 37. Chance of precipitation is 90%.

    Sunday Night: Rain and snow. Cloudy, with a low around 31. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Light Rain
  • Mon11/258% chance of precipitationLow 29°High 34°

    Monday: Rain and snow likely. Mostly cloudy, with a high near 34. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Monday Night: A slight chance of rain and snow before 11pm. Mostly cloudy, with a low around 29. Chance of precipitation is 20%.

    Rain And Snow Likely
  • Tue11/310% chance of precipitationLow 30°High 36°

    Tuesday: Partly sunny, with a high near 36.

    Tuesday Night: Mostly cloudy, with a low around 30.

    Partly Sunny
  • Wed11/410% chance of precipitationLow 30°High 40°

    Wednesday: Mostly sunny, with a high near 40.

    Wednesday Night: Partly cloudy, with a low around 30.

    Mostly Sunny

Forecast for 43.358, -111.136 from the NWS PIH office, updated 10/29/2026, 4:31 PM 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. Now42°Partly Sunny0%5 mph
  2. 6 PM40°Mostly Cloudy1%3 mph
  3. 7 PM39°Mostly Cloudy1%6 mph
  4. 8 PM37°Mostly Cloudy2%10 mph
  5. 9 PM37°Mostly Cloudy3%14 mph
  6. 10 PM37°Cloudy3%14 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 Irwin, ID 83428?
The National Weather Service forecast for this afternoon calls for a high near 44°F. Partly Sunny.
Will it rain in Irwin, ID 83428 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 Irwin, ID 83428 today?
Sunrise is about 7:56 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 Irwin, ID 83428?
At Swan Valley, the 1991 to 2020 normal high in October is 59°F and the normal low is 29°F.

Rain and snow totals

Next 3 days, NWS forecast grid

Rain (liquid)
0.40 in
Snow
0.00 in
Ice
0.00 in

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

Bonneville County, week of 10/27/2026

96% of the county is in moderate drought or worse.

Sun and moon

Local time, center of the area

Sunrise
7:56 AM
Sunset
6:20 PM
Daylight
10 hr 24 min
Moon
Waning Gibbous 84% lit
First light (civil dawn)
7:26 AM
Last light (civil dusk)
6:49 PM
Moonrise
8:43 PM
Moonset
12:23 PM

Normal October weather

Climate

Normal October high 59°, low 29°, precipitation 1.81 in for the month. 1991 to 2020 normals at Swan Valley, 9 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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