Dangerous Fire Conditions in the Southern High Plains; Severe Weather from the Great Lakes into Central/Southern Plains; Late-Season Mountain Snow

Dry and windy conditions will produce dangerous fire weather conditions across the southern High Plains into the Southwest. Severe storms, including very large hail, strong tornadoes, and winds, are expected from the Great Lakes into the central/southern Plains. Heavy late-season snow and cold temperatures are expected in the northern to central Rockies. Heat is spreading across the eastern U.S.. Read More >

Current conditions at

ST. IGNATIUS (SIGM)

Lat: 47.31333°NLon: 114.09806°WElev: 2990.0ft.

NA

35°F

2°C

Humidity 90%
Wind Speed SE 3 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 17 May 11:00 PM MDT
Extended Forecast for

Arlee MT

Frost Advisory until May 18, 09:00am
Click here for hazard details and duration
Frost Advisory
  •  
    Frost Advisory until May 18, 09:00am

    NOW until 9:00am Mon

    Frost Advisory

  • Overnight

    Low: 33 °F

    Areas Frost

  • Monday

    Monday: A 20 percent chance of showers after noon.  Widespread frost, mainly before 7am.  Otherwise, sunny, with a high near 60. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 60 °F

    Frost then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers before 10pm, then a slight chance of rain between 10pm and 11pm.  Partly cloudy, with a low around 38. Light and variable wind.  Chance of precipitation is 20%.

    Low: 38 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 63. Light and variable wind becoming west around 6 mph in the afternoon.  Chance of precipitation is 20%.

    High: 63 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42. West wind around 5 mph becoming calm  in the evening.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of rain between noon and 3pm, then a chance of showers and thunderstorms after 3pm.  Partly sunny, with a high near 64. Chance of precipitation is 30%.

    High: 64 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain before midnight.  Partly cloudy, with a low around 43.

    Low: 43 °F

    Chance Rain
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

Detailed Forecast

Overnight
Areas of frost after 1am. Otherwise, mostly clear, with a low around 33. Calm wind.
Monday
A 20 percent chance of showers after noon. Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 60. Calm wind becoming north northwest around 6 mph in the afternoon.
Monday Night
A slight chance of showers before 10pm, then a slight chance of rain between 10pm and 11pm. Partly cloudy, with a low around 38. Light and variable wind. Chance of precipitation is 20%.
Tuesday
A slight chance of rain between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 63. Light and variable wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 42. West wind around 5 mph becoming calm in the evening.
Wednesday
A chance of rain between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 64. Chance of precipitation is 30%.
Wednesday Night
A 30 percent chance of rain before midnight. Partly cloudy, with a low around 43.
Thursday
Mostly sunny, with a high near 66.
Thursday Night
A slight chance of rain before midnight. Mostly cloudy, with a low around 46.
Friday
A slight chance of rain after noon. Mostly sunny, with a high near 69.
Friday Night
A slight chance of rain. Partly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Mostly sunny, with a high near 73.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Arlee MT
 47.16°N 114.09°W (Elev. 3199 ft)
9:02 pm MDT May 17, 2026
12am MDT May 18, 2026-6pm MDT May 24, 2026
 
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Additional Resources

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