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

Flooding Risks from Tropical Moisture Across the Intermountain West and East Coast

Tropical moisture from Isaias and Rachel will impact portions of the Intermountain West and East Coast states. Flooding, gusty winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, record warmth will spread northward across the Mississippi Valley the next few days. Looking for snow, the first winter storm of the season is underway across the northern Rockies. Read More >

Current conditions at

Sidney-Richland (KSDY)

Lat: 47.7°NLon: 104.2°WElev: 1985.0ft.

light rain,mist

43°F

6°C

Humidity 100%
Wind Speed NNE 11 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 43°F (6°C)
Visibility 6.00 mi
Wind Chill37°F (3°C)
Last update 11 Oct 10:35 AM MDT
Extended Forecast for

Lambert MT

  • Today

    Today: Rain. Patchy fog. High near 46. Northeast wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%.

    High: 46 °F

    Rain and
    Patchy Fog

  • Tonight

    Tonight: Rain. Patchy fog. Low around 30. East northeast wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.

    Low: 30 °F

    Rain and
    Patchy Fog

  • Columbus Day

    Columbus Day: Rain, mainly before 3pm. Patchy fog before 7am. High near 42. North wind 8 to 10 mph. Chance of precipitation is 100%.

    High: 42 °F

    Rain and
    Patchy Fog
    then Rain
    Likely

  • Monday Night

    Monday Night: Cloudy, with a low around 29. North northwest wind around 6 mph becoming calm in the evening.

    Low: 29 °F

    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 53. Calm wind becoming west around 5 mph in the afternoon.

    High: 53 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 29. Light west wind.

    Low: 29 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 58. Calm wind becoming south around 6 mph in the afternoon.

    High: 58 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 34. South southeast wind 5 to 7 mph becoming west southwest after midnight.

    Low: 34 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 56. West northwest wind 8 to 13 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 33 mph.

    High: 56 °F

    Mostly Sunny

Detailed Forecast

Today
Rain. Patchy fog. High near 46. Northeast wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%.
Tonight
Rain. Patchy fog. Low around 30. East northeast wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.
Columbus Day
Rain, mainly before 3pm. Patchy fog before 7am. High near 42. North wind 8 to 10 mph. Chance of precipitation is 100%.
Monday Night
Cloudy, with a low around 29. North northwest wind around 6 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 53. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 29. Light west wind.
Wednesday
Sunny, with a high near 58. Calm wind becoming south around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 34. South southeast wind 5 to 7 mph becoming west southwest after midnight.
Thursday
Mostly sunny, with a high near 56. West northwest wind 8 to 13 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 33 mph.
Thursday Night
Partly cloudy, with a low around 29. Northwest wind 7 to 17 mph, with gusts as high as 30 mph.
Friday
Sunny, with a high near 54. Northwest wind 6 to 9 mph becoming southwest in the afternoon.
Friday Night
Mostly clear, with a low around 31.
Saturday
Sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lambert MT
 47.69°N 104.62°W (Elev. 2451 ft)
Last Update:
3:11 am MDT Oct 11, 2026
Forecast Valid:
10am MDT Oct 11, 2026-6pm MDT Oct 17, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation