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

Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Current conditions at

Ririe (ITD18)

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

NA

69°F

21°C

Humidity 22%
Wind Speed SW 19 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility 1.24 mi
Last update 18 Mar 01:45 PM MDT
Extended Forecast for

Swan Valley ID

  • This Afternoon

    This Afternoon: Sunny, with a high near 68. West southwest wind around 11 mph, with gusts as high as 20 mph.

    High: 68 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 42. West southwest wind 6 to 9 mph becoming east southeast in the evening.

    Low: 42 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 70. East southeast wind 6 to 10 mph becoming west southwest in the afternoon.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43. West southwest wind 6 to 9 mph becoming southeast after midnight.

    Low: 43 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 72. Southeast wind 7 to 10 mph becoming west southwest in the afternoon.

    High: 72 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Sunday

    Sunday: A 20 percent chance of rain before noon. Snow level 7800 feet. Mostly sunny, with a high near 58.

    High: 58 °F

    Slight Chance
    Rain then
    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 68. West southwest wind around 11 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 42. West southwest wind 6 to 9 mph becoming east southeast in the evening.
Thursday
Sunny, with a high near 70. East southeast wind 6 to 10 mph becoming west southwest in the afternoon.
Thursday Night
Mostly clear, with a low around 43. West southwest wind 6 to 9 mph becoming southeast after midnight.
Friday
Sunny, with a high near 72. Southeast wind 7 to 10 mph becoming west southwest in the afternoon.
Friday Night
Partly cloudy, with a low around 45.
Saturday
Mostly sunny, with a high near 69.
Saturday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 39.
Sunday
A 20 percent chance of rain before noon. Snow level 7800 feet. Mostly sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 35.
Monday
Partly sunny, with a high near 59.
Monday Night
A 20 percent chance of rain. Snow level 8400 feet. Mostly cloudy, with a low around 40.
Tuesday
A 20 percent chance of rain. Snow level 8300 feet rising to 9300 feet in the afternoon. Partly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Swan Valley ID
 43.46°N 111.34°W (Elev. 5509 ft)
Last Update:
12:30 pm MDT Mar 18, 2026
Forecast Valid:
2pm MDT Mar 18, 2026-6pm MDT Mar 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation