On July 7, 2015, NWS implemented changes to the icons depicted on all of its point-forecast pages. Changes include new icon images with increased clarity, 6-hour increments for rapidly changing weather and new color blocks to highlight forecast hazards.

A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

Changes to the icons were based on analysis of 6,700 public comments collected in 2014. Also, many of these changes are based on the results of a research project led by the National Center for Atmospheric Research.

Users are encouraged to continue to provide comments regarding these changes via email at icons@noaa.gov. NWS will continue to analyze incoming feedback and refine the icons as necessary. Any substantial change to the icons will be facilitated through the NWS public comment/review process.

Tropics Continue Active

The tropics continue active this weekend, with Tropical Storm Erika moving west-northwestward near Cuba, and three named storms in the Pacific: Ignacio, Jimena, and Kilo. Interests in an near Florida should monitor Erika, and interests in and near the main Hawaiian Islands should monitor Ignacio.
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Hazardous Weather Conditions

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

Lat: 47.04917°NLon: 109.46639°WElev: 4167ft.

Haze

20°C

68°F

Humidity 36%
Wind Speed S 8 MPH
Barometer 30.04 in (1012.8 mb)
Dewpoint 4°C (40°F)
Visibility 8 km
Last update 29 Aug 12:54 am MDT
Extended Forecast for

Lewistown MT

  • Overnight

    Overnight: Areas of smoke. Mostly cloudy, with a low around 14. South wind around 11 km/h.

    Areas Smoke

    Low: 14 °C

  • Saturday

    Saturday: Areas of smoke. Partly sunny, with a high near 34. South southeast wind 8 to 13 km/h increasing to 22 to 27 km/h in the afternoon. Winds could gust as high as 39 km/h.

    Areas Smoke

    High: 34 °C

  • Saturday
    Night

    Saturday Night: A 20 percent chance of showers and thunderstorms after midnight.  Areas of smoke. Partly cloudy, with a low around 14. South wind 19 to 24 km/h becoming southwest 13 to 18 km/h after midnight. Winds could gust as high as 34 km/h.

    Areas Smoke
    then Slight
    Chance
    T-storms

    Low: 14 °C

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly after noon.  Areas of smoke. Partly sunny, with a high near 26. Northwest wind 5 to 8 km/h becoming calm  in the afternoon.

    Chance
    T-storms

    High: 26 °C

  • Sunday
    Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before midnight.  Patchy smoke. Partly cloudy, with a low around 7. West northwest wind 13 to 18 km/h.

    Slight Chance
    T-storms then
    Patchy Smoke

    Low: 7 °C

  • Monday

    Monday: Patchy smoke. Mostly sunny, with a high near 23.

    Patchy Smoke

    High: 23 °C

  • Monday
    Night

    Monday Night: Patchy smoke. Partly cloudy, with a low around 8.

    Patchy Smoke

    Low: 8 °C

  • Tuesday

    Tuesday: Patchy smoke. Sunny, with a high near 28.

    Patchy Smoke

    High: 28 °C

  • Tuesday
    Night

    Tuesday Night: Patchy smoke. Partly cloudy, with a low around 9.

    Patchy Smoke

    Low: 9 °C

Detailed Forecast

Overnight
Areas of smoke. Mostly cloudy, with a low around 14. South wind around 11 km/h.
Saturday
Areas of smoke. Partly sunny, with a high near 34. South southeast wind 8 to 13 km/h increasing to 22 to 27 km/h in the afternoon. Winds could gust as high as 39 km/h.
Saturday Night
A 20 percent chance of showers and thunderstorms after midnight. Areas of smoke. Partly cloudy, with a low around 14. South wind 19 to 24 km/h becoming southwest 13 to 18 km/h after midnight. Winds could gust as high as 34 km/h.
Sunday
A 30 percent chance of showers and thunderstorms, mainly after noon. Areas of smoke. Partly sunny, with a high near 26. Northwest wind 5 to 8 km/h becoming calm in the afternoon.
Sunday Night
A 20 percent chance of showers and thunderstorms before midnight. Patchy smoke. Partly cloudy, with a low around 7. West northwest wind 13 to 18 km/h.
Monday
Patchy smoke. Mostly sunny, with a high near 23.
Monday Night
Patchy smoke. Partly cloudy, with a low around 8.
Tuesday
Patchy smoke. Sunny, with a high near 28.
Tuesday Night
Patchy smoke. Partly cloudy, with a low around 9.
Wednesday
Patchy smoke. Mostly sunny, with a high near 26.
Wednesday Night
Patchy smoke. Partly cloudy, with a low around 8.
Thursday
A slight chance of showers. Patchy smoke. Mostly sunny, with a high near 23.
Thursday Night
A slight chance of showers. Patchy smoke. Partly cloudy, with a low around 5.
Friday
A slight chance of showers. Patchy smoke. Mostly sunny, with a high near 21.
  Click Map For Forecast
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 1188 m)
9:16 pm MDT Aug 28, 2015
1am MDT Aug 29, 2015-6pm MDT Sep 4, 2015
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database