Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Current conditions at

Arrow Creek Hill I-90 MP 468.6 (MTARC)

Lat: 45.78°NLon: 108.16341°WElev: 3924.0ft.

NA

64°F

18°C

Humidity 43%
Wind Speed NE 7 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 15 Aug 09:15 PM MDT
Extended Forecast for

5 Miles SW Pompeys Pillar MT

  • Tonight

    Tonight: A slight chance of showers and thunderstorms.  Partly cloudy, with a low around 56. East wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Patchy fog before 9am.  Otherwise, partly sunny through mid morning, then becoming sunny, with a high near 86. Calm wind becoming west around 5 mph in the afternoon.

    High: 86 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight.  Mostly cloudy, with a low around 58. North wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 58 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 85. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 85 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 60. North northwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 40%.

    Low: 60 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after noon.  Partly sunny, with a high near 82. Light and variable wind becoming north northwest 5 to 7 mph in the afternoon.  Chance of precipitation is 40%.

    High: 82 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers before midnight.  Mostly cloudy, with a low around 56. North wind around 6 mph becoming calm  in the evening.

    Low: 56 °F

    Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 86. Calm wind becoming west around 5 mph in the afternoon.

    High: 86 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 57. West northwest wind around 5 mph becoming calm  in the evening.

    Low: 57 °F

    Slight Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 56. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Sunday
Patchy fog before 9am. Otherwise, partly sunny through mid morning, then becoming sunny, with a high near 86. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 58. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 85. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. North northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Tuesday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 82. Light and variable wind becoming north northwest 5 to 7 mph in the afternoon. Chance of precipitation is 40%.
Tuesday Night
A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 56. North wind around 6 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 86. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 57. West northwest wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 89. Light and variable wind becoming northwest around 6 mph in the morning.
Thursday Night
Partly cloudy, with a low around 59. North wind around 6 mph becoming calm in the evening.
Friday
Mostly sunny and hot, with a high near 92. Calm wind becoming northeast around 5 mph in the afternoon.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 62. East northeast wind around 5 mph becoming calm after midnight.
Saturday
Mostly sunny and hot, with a high near 93. Calm wind becoming east northeast 5 to 7 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Pompeys Pillar MT
 45.95°N 108.03°W (Elev. 3081 ft)
4:07 pm MDT Aug 15, 2026
9pm MDT Aug 15, 2026-6pm MDT Aug 22, 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