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City of Firth, IDFirth, ID 7-Day Night Weather Forecast
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Firth, ID Weather Forecast
Firth, ID Weather Forecast Date: 107 PM MDT Sat Sep 12 2026
The area/counties/county of: Lower Snake River Plain, including: Pocatello, Blackfoot, American Falls, Shelley, and Fort Hall.or toggle through each period.
Tonight... Partly cloudy. Patchy smoke. Lows 48 to 58. Northwest winds up to 10 mph...Shifting to east around 10 mph after midnight.
Sunday... Sunny, breezy. Highs 71 to 78. Southwest winds 15 to 25 mph.
Sunday Night... Mostly clear. Breezy, colder. Lows 37 to 47. Southwest winds 15 to 25 mph.
Monday... Sunny, breezy. Highs 64 to 71. Southwest winds 15 to 25 mph.
Monday Night... Clear. Lows 34 to 44. Southwest winds up to 10 mph.
Tuesday... Sunny. Highs 72 to 79.
Tuesday Night... Mostly clear. Lows 39 to 49. Highs 72 to 80.
Wednesday... Mostly clear. Lows 39 to 49. Highs 72 to 80.
Thursday... Mostly clear. Lows 39 to 49. Highs 72 to 80.
Thursday Night... Partly cloudy with a slight chance of rain. Lows 39 to 48.
Friday... Mostly clear. Highs 74 to 83. Lows 40 to 50.
POP = Probability of Precipitation
Firth Radar Loop
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