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Hot weather continues for the Pacific Northwest and Great Basin; monsoonal moisture establishing over the Southwest

Across the western U.S., excessive heat will continue with widespread 100-plus degree temperatures for the lower elevations of Washington, Oregon, Idaho, Nevada, and California through midweek. Across the Desert Southwest, normal hot temperatures will be present through the week. Increasing moisture from the monsoon will make it feel more humid as well as aid in thunderstorm development.
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Hazardous Weather Conditions

Current conditions at

Spearfish / Clyde Ice (KSPF)

Lat: 44.48°NLon: 103.78°WElev: 3898ft.

Fair

18°C

64°F

Humidity 73%
Wind Speed NW 6 km/h
Barometer 30.04 in
Dewpoint 13°C (55°F)
Visibility 16 km
Last update 30 Jun 1:55 am MDT
Extended Forecast for

Lead SD

  • Overnight

    Partly Cloudy

    Partly
    Cloudy

    Low: 15 °C

  • Tuesday

    Chance Thunderstorms Chance for Measurable Precipitation 30%

    Chance
    Thunderstorms

    High: 29 °C

  • Tuesday
    Night

    Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

    Slight Chc
    Thunderstorms

    Low: 14 °C

  • Wednesday

    Mostly Sunny

    Mostly
    Sunny

    High: 27 °C

  • Wednesday
    Night

    Chance Thunderstorms Chance for Measurable Precipitation 30%

    Chance
    Thunderstorms

    Low: 13 °C

  • Thursday

    Chance Thunderstorms Chance for Measurable Precipitation 30%

    Chance
    Thunderstorms

    High: 24 °C

  • Thursday
    Night

    Partly Cloudy

    Partly
    Cloudy

    Low: 12 °C

  • Friday

    Mostly Sunny

    Mostly
    Sunny

    High: 24 °C

  • Friday
    Night

    Mostly Clear

    Mostly
    Clear

    Low: 13 °C

Detailed Forecast

Overnight
Partly cloudy, with a low around 15. Calm wind.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 29. Calm wind becoming northwest 5 to 8 km/h in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 14. Light west wind becoming northwest 6 to 11 km/h after midnight.
Wednesday
Mostly sunny, with a high near 27. Northwest wind 14 to 24 km/h, with gusts as high as 34 km/h.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 13. North wind 9 to 14 km/h becoming light.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 24. Northwest wind 11 to 18 km/h, with gusts as high as 27 km/h.
Thursday Night
Partly cloudy, with a low around 12.
Friday
Mostly sunny, with a high near 24.
Friday Night
Mostly clear, with a low around 13.
Independence Day
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 29.
Saturday Night
Partly cloudy, with a low around 13.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 25.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 14.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 27.
  Click Map For Forecast
Point Forecast:
Lead SD
 44.35°N 103.77°W (Elev. 1622 m)
1:42 am MDT Jun 30, 2015
3am MDT Jun 30, 2015-6pm MDT Jul 6, 2015
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Graph

National Digital Forecast Database