Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Ririe (ITD18)

Lat: 43.6111°NLon: 111.70531°WElev: 5106.0ft.

NA

50°F

10°C

Humidity 38%
Wind Speed ESE 23 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility 1.24 mi
Wind Chill43°F (6°C)
Last update 21 Mar 02:30 AM MDT
Extended Forecast for

2 Miles WNW Irwin ID

  • Overnight

    Overnight: Clear, with a low around 45. East southeast wind around 8 mph.

    Low: 45 °F

    Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 71. East southeast wind 8 to 18 mph becoming west in the afternoon. Winds could gust as high as 25 mph.

    High: 71 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: A 20 percent chance of rain between 1am and 2am.  Snow level 9700 feet lowering to 7700 feet after midnight . Partly cloudy, with a low around 39. West southwest wind 5 to 15 mph, with gusts as high as 23 mph.

    Low: 39 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: Sunny, with a high near 59. Light and variable wind becoming west southwest around 6 mph in the afternoon.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 36. West southwest wind around 6 mph becoming light and variable.

    Low: 36 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain.  Mostly cloudy, with a high near 63.

    High: 63 °F

    Slight Chance
    Rain

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before midnight.  Mostly cloudy, with a low around 45.

    Low: 45 °F

    Slight Chance
    Rain then
    Mostly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 45. East southeast wind around 8 mph.
Saturday
Increasing clouds, with a high near 71. East southeast wind 8 to 18 mph becoming west in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
A 20 percent chance of rain between 1am and 2am. Snow level 9700 feet lowering to 7700 feet after midnight . Partly cloudy, with a low around 39. West southwest wind 5 to 15 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 59. Light and variable wind becoming west southwest around 6 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 36. West southwest wind around 6 mph becoming light and variable.
Monday
Mostly sunny, with a high near 62.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
A 20 percent chance of rain. Mostly cloudy, with a high near 63.
Tuesday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 45.
Wednesday
A 20 percent chance of rain before noon. Partly sunny, with a high near 63.
Wednesday Night
Mostly cloudy, with a low around 40.
Thursday
Mostly sunny, with a high near 56.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
Mostly sunny, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Irwin ID
 43.42°N 111.31°W (Elev. 5397 ft)
12:31 am MDT Mar 21, 2026
2am MDT Mar 21, 2026-6pm MDT Mar 27, 2026
 
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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