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Fairfield ID Weather - Clear - 68°F
Clear
68°F
Updated 10:40 am
Feels Like 54°F
Humidity 49%
Wind W 14 mph
Barometer  30.01 in
Dew Point 48°F
Fairfield ID Weather - Clear - 20°C
Clear
20°C
Updated 10:40 am
Feels Like 12°C
Humidity 49%
Wind W 23 km/h
Barometer  101.6 kPa
Dew Point 9°C
Fairfield, ID Weather and Current Conditionsfairfield id weather forecast

Fairfield, ID Weather Forecast

Fairfield Idaho WeatherFairfield, Idaho Weather Weather Forecast
14 day API weather forecast for Fairfield, Idaho. Note: The 7-day weather forecast for Fairfield, ID is the most reliable and accurate weather forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days ahead.
Fairfield, ID Weather Forecast Dated: 1040 AM Fri Sep 11 2026
Expect a cool pattern with a mix of sun and clouds and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.

Friday, September 11, 2026

Mid-Morning
Fairfield Weather - 2026-09-11 - Morning - Sunny
55°F 13°C
Sunny
Mid-Afternoon
Fairfield Weather - 2026-09-11 - Afternoon - Sunny
68°F 20°C
Sunny
Early-Evening
Fairfield Weather - 2026-09-11 - Evening - Overcast
60°F 16°C
Overcast
Pleasant near 68°F 20°C, sunny through the afternoon, turning overcast this evening, with lower humidity and steady pressure. Winds turning from the NW to the N at 11 mph 17 km/h.

Saturday, September 12, 2026

Mid-Morning
Fairfield Weather - 2026-09-12 - Morning - Sunny
59°F 15°C
Sunny
Mid-Afternoon
Fairfield Weather - 2026-09-12 - Afternoon - Overcast
71°F 22°C
Overcast
Early-Evening
Fairfield Weather - 2026-09-12 - Evening - Sunny
64°F 18°C
Sunny
Comfortable with temperatures reaching 71°F 22°C, partly cloudy in the morning, overcast in the afternoon, and sunny this evening, with lower humidity and barometric pressure falling. Winds switching from the ESE to the WNW at 8 mph 13 km/h.

Sunday, September 13, 2026

Mid-Morning
Fairfield Weather - 2026-09-13 - Morning - Scattered Showers
42°F 6°C
Scattered Showers
Mid-Afternoon
Fairfield Weather - 2026-09-13 - Afternoon - Partly Cloudy
48°F 9°C
Partly Cloudy
Early-Evening
Fairfield Weather - 2026-09-13 - Evening - Sunny
43°F 6°C
Sunny
Chilly near 48°F 9°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds moving from the WSW to the NW at 9 mph 15 km/h.

Monday, September 14, 2026

Mid-Morning
Fairfield Weather - 2026-09-14 - Morning - Sunny
42°F 6°C
Sunny
Mid-Afternoon
Fairfield Weather - 2026-09-14 - Afternoon - Sunny
61°F 16°C
Sunny
Early-Evening
Fairfield Weather - 2026-09-14 - Evening - Sunny
52°F 11°C
Sunny
Cool with a high near 61°F 16°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds out of the SW at 12 mph 19 km/h.

Tuesday, September 15, 2026

Mid-Morning
Fairfield Weather - 2026-09-15 - Morning - Sunny
48°F 9°C
Sunny
Mid-Afternoon
Fairfield Weather - 2026-09-15 - Afternoon - Sunny
65°F 18°C
Sunny
Early-Evening
Fairfield Weather - 2026-09-15 - Evening - Sunny
58°F 15°C
Sunny
Refreshing around 65°F 18°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds shifting from the ENE to the NNW at 8 mph 14 km/h.

Wednesday, September 16, 2026

Mid-Morning
Fairfield Weather - 2026-09-16 - Morning - Sunny
53°F 12°C
Sunny
Mid-Afternoon
Fairfield Weather - 2026-09-16 - Afternoon - Sunny
69°F 21°C
Sunny
Early-Evening
Fairfield Weather - 2026-09-16 - Evening - Sunny
60°F 16°C
Sunny
Pleasant near 69°F 21°C, sunny throughout the day, with steady humidity and steady pressure. Winds turning from the NNE to the N at 9 mph 14 km/h.

Thursday, September 17, 2026

Mid-Morning
Fairfield Weather - 2026-09-17 - Morning - Sunny
59°F 15°C
Sunny
Mid-Afternoon
Fairfield Weather - 2026-09-17 - Afternoon - Sunny
75°F 24°C
Sunny
Early-Evening
Fairfield Weather - 2026-09-17 - Evening - Sunny
67°F 20°C
Sunny
Comfortable with temperatures reaching 75°F 24°C, sunny throughout the day, with steady humidity and steady pressure. Winds switching from the NE to the N at 10 mph 16 km/h.

Friday, September 18, 2026

Mid-Morning
Fairfield Weather - 2026-09-18 - Morning - Overcast
65°F 18°C
Overcast
Mid-Afternoon
Fairfield Weather - 2026-09-18 - Afternoon - Overcast
79°F 26°C
Overcast
Early-Evening
Fairfield Weather - 2026-09-18 - Evening - Overcast
71°F 22°C
Overcast
Enjoyable around 79°F 26°C, overcast throughout the day, with steady humidity and barometric pressure falling. Winds blowing from the S at 9 mph 14 km/h.

Saturday, September 19, 2026

Mid-Morning
Fairfield Weather - 2026-09-19 - Morning - Sunny
68°F 20°C
Sunny
Mid-Afternoon
Fairfield Weather - 2026-09-19 - Afternoon - Cloudy
80°F 26°C
Cloudy
Early-Evening
Fairfield Weather - 2026-09-19 - Evening - Overcast
71°F 22°C
Overcast
Warm temperatures up to 80°F 26°C, sunny in the morning, becoming overcast through the afternoon and evening, with increasing humidity and barometric pressure falling. Winds swinging from the ENE to the ESE at 6 mph 9 km/h.

Sunday, September 20, 2026

Mid-Morning
Fairfield Weather - 2026-09-20 - Morning - Scattered Showers
59°F 15°C
Scattered Showers
Mid-Afternoon
Fairfield Weather - 2026-09-20 - Afternoon - Overcast
62°F 17°C
Overcast
Early-Evening
Fairfield Weather - 2026-09-20 - Evening - Overcast
59°F 15°C
Overcast
Mildly cool near 62°F 17°C, periods of heavy rain and gusty conditions, with lower humidity and barometric pressure falling. Winds shifting from the W to the NW at 5 mph 8 km/h.

Monday, September 21, 2026

Mid-Morning
Fairfield Weather - 2026-09-21 - Morning - Sunny
53°F 12°C
Sunny
Mid-Afternoon
Fairfield Weather - 2026-09-21 - Afternoon - Sunny
69°F 21°C
Sunny
Early-Evening
Fairfield Weather - 2026-09-21 - Evening - Sunny
59°F 15°C
Sunny
Pleasant near 69°F 21°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the NNW to the NW at 9 mph 14 km/h.

Tuesday, September 22, 2026

Mid-Morning
Fairfield Weather - 2026-09-22 - Morning - Partly Cloudy
47°F 9°C
Partly Cloudy
Mid-Afternoon
Fairfield Weather - 2026-09-22 - Afternoon - Overcast
58°F 15°C
Overcast
Early-Evening
Fairfield Weather - 2026-09-22 - Evening - Overcast
49°F 9°C
Overcast
Cool with a high near 58°F 15°C, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and barometric pressure falling. Winds switching from the WNW to the NW at 9 mph 14 km/h.

Wednesday, September 23, 2026

Mid-Morning
Fairfield Weather - 2026-09-23 - Morning - Sunny
40°F 5°C
Sunny
Mid-Afternoon
Fairfield Weather - 2026-09-23 - Afternoon - Overcast
51°F 11°C
Overcast
Early-Evening
Fairfield Weather - 2026-09-23 - Evening - Overcast
45°F 8°C
Overcast
Brisk around 51°F 11°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds moving from the W to the SSE at 8 mph 12 km/h.

Thursday, September 24, 2026

Mid-Morning
Fairfield Weather - 2026-09-24 - Morning - Heavy Snow Showers
36°F 2°C
Heavy Snow Showers
Mid-Afternoon
Fairfield Weather - 2026-09-24 - Afternoon - Heavy Snow Showers
38°F 4°C
Heavy Snow Showers
Early-Evening
Fairfield Weather - 2026-09-24 - Evening - Scattered Showers
41°F 5°C
Scattered Showers
Biting cold near 38°F 4°C, patchy blowing snow and gusty conditions, with steady humidity and steady pressure.

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Weather by the Numbers

Fri, 11th
Fairfield ID Weather - Friday, Sep 11, 2026 - Sunny
Hi: 68°F 20°C
Lo: 49°F 10°C
Sunrise 07:14 AM
Sunset 07:56 PM
Wind WSW 13 mph20 km/h
Dew Point 36°F2°C
uv Index 6
Barometric Pressure 29.85 in1011 mb
POP 1% *
Humidity 35%
Sat, 12th
Fairfield ID Weather - Saturday, Sep 12, 2026 - Cloudy
Hi: 71°F 22°C
Lo: 49°F 9°C
Sunrise 07:16 AM
Sunset 07:54 PM
Wind S 10 mph16 km/h
Dew Point 28°F-2°C
uv Index 5
Barometric Pressure 29.8 in1009 mb
POP 5% *
Humidity 22%
Sun, 13th
Fairfield ID Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 54°F 12°C
Lo: 37°F 3°C
Sunrise 07:17 AM
Sunset 07:53 PM
Wind WSW 17 mph27 km/h
Dew Point 24°F-4°C
uv Index 5
Barometric Pressure 29.91 in1013 mb
POP 1% *
Humidity 39%
Mon, 14th
Fairfield ID Weather - Monday, Sep 14, 2026 - Sunny
Hi: 62°F 16°C
Lo: 33°F 0°C
Sunrise 07:18 AM
Sunset 07:51 PM
Wind SSW 8 mph13 km/h
Dew Point 18°F-8°C
uv Index 5
Barometric Pressure 29.97 in1015 mb
POP 1% *
Humidity 24%
Tue, 15th
Fairfield ID Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 66°F 19°C
Lo: 39°F 4°C
Sunrise 07:19 AM
Sunset 07:49 PM
Wind SSW 8 mph12 km/h
Dew Point 17°F-8°C
uv Index 5
Barometric Pressure 29.97 in1015 mb
POP 0% *
Humidity 19%
Wed, 16th
Fairfield ID Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 69°F 21°C
Lo: 43°F 6°C
Sunrise 07:20 AM
Sunset 07:47 PM
Wind SSW 8 mph12 km/h
Dew Point 15°F-10°C
uv Index 5
Barometric Pressure 30.12 in1020 mb
POP 1% *
Humidity 14%
Thu, 17th
Fairfield ID Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 75°F 24°C
Lo: 48°F 9°C
Sunrise 07:21 AM
Sunset 07:45 PM
Wind S 7 mph12 km/h
Dew Point 15°F-9°C
uv Index 6
Barometric Pressure 30.21 in1023 mb
POP 0% *
Humidity 12%
Fri, 18th
Fairfield ID Weather - Friday, Sep 18, 2026 - Overcast
Hi: 79°F 26°C
Lo: 56°F 13°C
Sunrise 07:22 AM
Sunset 07:44 PM
Wind S 7 mph12 km/h
Dew Point 15°F-10°C
uv Index 5
Barometric Pressure 30.15 in1021 mb
POP 9% *
Humidity 10%
Sat, 19th
Fairfield ID Weather - Saturday, Sep 19, 2026 - Sunny
Hi: 80°F 26°C
Lo: 59°F 15°C
Sunrise 07:23 AM
Sunset 07:42 PM
Wind SSE 8 mph13 km/h
Dew Point 34°F1°C
uv Index 6
Barometric Pressure 29.97 in1015 mb
POP 1% *
Humidity 22%
Sun, 20th
Fairfield ID Weather - Sunday, Sep 20, 2026 - Thundery Outbreaks In Nearby
Hi: 63°F 17°C
Lo: 55°F 13°C
Sunrise 07:25 AM
Sunset 07:40 PM
Wind SW 6 mph10 km/h
Dew Point 42°F5°C
uv Index 4
Barometric Pressure 29.83 in1010 mb
POP 11% *
Humidity 45%
Mon, 21st
Fairfield ID Weather - Monday, Sep 21, 2026 - Sunny
Hi: 69°F 21°C
Lo: 48°F 9°C
Sunrise 07:26 AM
Sunset 07:38 PM
Wind WSW 6 mph10 km/h
Dew Point 33°F0°C
uv Index 5
Barometric Pressure 29.85 in1011 mb
POP 1% *
Humidity 31%
Tue, 22nd
Fairfield ID Weather - Tuesday, Sep 22, 2026 - Overcast
Hi: 58°F 15°C
Lo: 43°F 6°C
Sunrise 07:27 AM
Sunset 07:36 PM
Wind W 11 mph17 km/h
Dew Point 22°F-6°C
uv Index 3
Barometric Pressure 29.83 in1010 mb
POP 9% *
Humidity 26%
Wed, 23rd
Fairfield ID Weather - Wednesday, Sep 23, 2026 - Sunny
Hi: 51°F 11°C
Lo: 38°F 3°C
Sunrise 07:28 AM
Sunset 07:35 PM
Wind SW 10 mph15 km/h
Dew Point 14°F-10°C
uv Index 3
Barometric Pressure 29.77 in1008 mb
POP 1% *
Humidity 26%
Thu, 24th
Fairfield ID Weather - Thursday, Sep 24, 2026 - Overcast
Hi: 42°F 5°C
Lo: 33°F 1°C
Sunrise 07:29 AM
Sunset 07:33 PM
Wind SE 3 mph5 km/h
Dew Point 33°F1°C
uv Index 1
Barometric Pressure 29.85 in1011 mb
POP 24% *
Humidity 80%
* POP = Probability of Precipitation. Data for 12:00 PM.