Irwin, ID Weather Forecast

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Irwin, ID Weather Forecast

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Irwin ID weather  - Clear - 40°F
Clear
40°F
Updated 10:13 pm
Feels Like 39°F
Humidity 67%
Wind E 5 mph
Barometer  30.2 in
Dew Point 30°F
Irwin ID weather  - Clear - 4°C
Clear
4°C
Updated 10:13 pm
Feels Like 4°C
Humidity 67%
Wind E 8 km/h
Barometer  102.2 kPa
Dew Point -1°C

Irwin Weather Forecast

TONIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY
Irwin, ID Weather - Tonight Mostly Clear Irwin, ID Weather - Tuesday Mostly Sunny Irwin, ID Weather - Tuesday Night Mostly Clear Irwin, ID Weather - Wednesday Sunny Irwin, ID Weather - Wednesday Night Chance Of Rain Irwin, ID Weather - Thursday Chance Of T-Storm Irwin, ID Weather - Thursday Night Chance Of T-Storm Irwin, ID Weather - Friday Chance Of T-Storm Irwin, ID Weather - Friday Night Chance Of Rain Irwin, ID Weather - Saturday Mostly Clear Irwin, ID Weather - Saturday Night Mostly Clear Irwin, ID Weather - Sunday Mostly Clear
Mostly Clear Mostly Sunny Mostly Clear Sunny Chance of Rain Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of Rain Mostly Clear Mostly Clear Mostly Clear
Lo: 36°FLo: 2°C Hi: 73°FHi: 23°C
Lo: 44°FLo: 7°C Hi: 77°FHi: 25°C
Lo: 49°FLo: 9°C Hi: 75°FHi: 24°C
Lo: 46°FLo: 8°C Hi: 69°FHi: 21°C
Lo: 41°FLo: 5°C Hi: 68°FHi: 20°C
Lo: 40°FLo: 4°C
Hi: 68°FHi: 20°C
Lo: 40°FLo: 4°C
Hi: 73°FHi: 23°C
Lo: 41°FLo: 5°C
POP = Probability of Precipitation.
Weather Outlook Updated: 1232 PM MDT Mon Sep 14 2026 Irwin, ID Weather - WeatherWorld.com

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Issued: 559 PM MDT Mon Sep 14 2026

Key Messages

  • Frost possible across portions of Snake Plain tonight, mainly outside the interstate corridor.
  • Next chance of rain late week.

Discussion

... Issued at 114 PM MDT Mon Sep 14 2026

Cool temperatures remain in place today behind frontal system that passed through this weekend. Winds remain breezy as well, but overall impact will be greatest overnight as lows fall to coldest of the week. NBM retains a wide swath of sub-36 degree lows across the Snake River Plain, but traditional NAM and GFS ...