National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

FAIRFIELD (FAFI)

Lat: 43.30833°NLon: 114.825°WElev: 5039.0ft.

NA

76°F

24°C

Humidity 28%
Wind Speed WSW 5 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Heat Index77°F (25°C)
Last update 28 Aug 04:00 PM MDT
Extended Forecast for

Fairfield ID

  • Tonight

    Tonight: A chance of showers and thunderstorms. Patchy smoke after 3am. Mostly cloudy, with a low around 46. South southwest wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 46 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after noon. Patchy smoke before 9am. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 76. Light and variable wind becoming west southwest 8 to 13 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 30%.

    High: 76 °F

    Chance
    Showers and
    Patchy Fog

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and 3am. Mostly cloudy, with a low around 40. West northwest wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

    Low: 40 °F

    Chance
    Showers

  • Sunday

    Sunday: Mostly cloudy through mid morning, then gradual clearing, with a high near 74. West wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 74 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. West wind 11 to 16 mph becoming light and variable after midnight. Winds could gust as high as 25 mph.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 45.

    Low: 45 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers and thunderstorms. Patchy smoke after 3am. Mostly cloudy, with a low around 46. South southwest wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 40%.
Saturday
A chance of showers, with thunderstorms also possible after noon. Patchy smoke before 9am. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 76. Light and variable wind becoming west southwest 8 to 13 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and 3am. Mostly cloudy, with a low around 40. West northwest wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Sunday
Mostly cloudy through mid morning, then gradual clearing, with a high near 74. West wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 28 mph.
Sunday Night
Mostly clear, with a low around 37. West wind 11 to 16 mph becoming light and variable after midnight. Winds could gust as high as 25 mph.
Monday
Sunny, with a high near 80.
Monday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 45.
Tuesday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
Mostly sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 40.
Thursday
Partly sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 37.
Friday
Mostly sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fairfield ID
 43.36°N 114.81°W (Elev. 5092 ft)
Last Update:
2:31 pm MDT Aug 28, 2026
Forecast Valid:
5pm MDT Aug 28, 2026-6pm MDT Sep 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation