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Fairfield, ID Weather Forecast
Fairfield, ID Weather Forecast Date: 230 AM MDT Wed Sep 16 2026
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Today... Sunny. Highs 78 to 83. East winds 10 to 15 mph with gusts to 25 mph.
Tonight... Increasing clouds. A chance of showers after midnight. Chance of rain 30%. Not as cool with lows 47 to 52. East winds 10 to 15 mph with gusts to 25 mph.
Thursday... Partly cloudy with a chance of showers in the morning, then showers with a chance of thunderstorms in the afternoon. Thunderstorms May produce gusty winds and small hail in the afternoon. Chance of rain 80%. Highs 74 to 79. Southeast winds 10 to 15 mph with gusts to 30 mph.
Thursday Night... Decreasing clouds. A chance of rain showers after midnight. Patchy fog after midnight. Chance of rain 30%. Lows 40 to 45. West winds up to 10 mph. Gusts to 20 mph in the evening.
Friday... Patchy fog in the morning. Partly cloudy with a 30% chance of rain showers. Highs 67 to 72. Light winds in the morning, becoming southwest 10 to 15 mph in the afternoon.
Friday Night... Partly cloudy. Patchy fog after midnight. Lows 34 to 41.
Saturday... Areas of fog in the morning. Areas of fog through the day. Mostly clear. Highs 69 to 76. Lows 36 to 42.
Sunday... Areas of fog in the morning. Areas of fog through the day. Mostly clear. Highs 69 to 76. Lows 36 to 42.
Sunday Night... Mostly clear. Lows 38 to 44. Highs 73 to 78.
Monday... Mostly clear. Lows 38 to 44. Highs 73 to 78.
Monday Night... Partly cloudy. Lows 38 to 44.
POP = Probability of Precipitation
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