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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

Lat: 47.04917°NLon: 109.46639°WElev: 4167.0ft.

Clear

55°F

13°C

Humidity 87%
Wind Speed SSE 5 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 17 Aug 02:50 AM MDT
Extended Forecast for

Moore MT

  • Overnight

    Overnight: Partly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 81. Calm wind becoming north around 6 mph in the afternoon.

    High: 81 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Widespread haze after 4am. Cloudy, then gradually becoming partly cloudy, with a low around 54. Southwest wind around 7 mph becoming east in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 50%.

    Low: 54 °F

    Chance
    T-storms then
    Haze

  • Monday

    Monday: A 30 percent chance of showers after noon. Widespread haze before 10am. Mostly sunny, with a high near 85. South wind 3 to 6 mph.

    High: 85 °F

    Haze then
    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. South wind around 6 mph becoming east southeast in the evening.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91. South southwest wind around 6 mph.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59. East northeast wind around 7 mph becoming south after midnight.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. South wind 6 to 9 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 55. Calm wind.
Sunday
A 50 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 81. Calm wind becoming north around 6 mph in the afternoon.
Sunday Night
A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Widespread haze after 4am. Cloudy, then gradually becoming partly cloudy, with a low around 54. Southwest wind around 7 mph becoming east in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Monday
A 30 percent chance of showers after noon. Widespread haze before 10am. Mostly sunny, with a high near 85. South wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 58. South wind around 6 mph becoming east southeast in the evening.
Tuesday
Sunny, with a high near 91. South southwest wind around 6 mph.
Tuesday Night
Mostly clear, with a low around 59. East northeast wind around 7 mph becoming south after midnight.
Wednesday
Sunny, with a high near 89. South wind 6 to 9 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
Sunny, with a high near 77.
Thursday Night
A slight chance of showers. Mostly clear, with a low around 50.
Friday
Sunny, with a high near 75.
Friday Night
Mostly clear, with a low around 49.
Saturday
Sunny, with a high near 78.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Moore MT
 46.96°N 109.69°W (Elev. 4206 ft)
Last Update:
2:52 am MDT Aug 17, 2025
Forecast Valid:
3am MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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