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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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Current conditions at

St. Louis, Lambert-St. Louis International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

76°F

24°C

Humidity 72%
Wind Speed SW 3 mph
Barometer 29.87 in (1010.5 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 29 Jun 9:51 pm CDT
Extended Forecast for

Saint Louis MO

  • Overnight

    Slight Chance Showers Chance for Measurable Precipitation 20%

    Slight Chc
    Showers

    Low: 68 °F

  • Tuesday

    Chance Thunderstorms Chance for Measurable Precipitation 30%

    Chance
    Thunderstorms

    High: 88 °F

  • Tuesday
    Night

    Thunderstorms Likely Chance for Measurable Precipitation 60%

    Thunderstorms
    Likely

    Low: 69 °F

  • Wednesday

    Thunderstorms Likely Chance for Measurable Precipitation 60%

    Thunderstorms
    Likely

    High: 80 °F

  • Wednesday
    Night

    Thunderstorms Likely Chance for Measurable Precipitation 60%

    Thunderstorms
    Likely

    Low: 68 °F

  • Thursday

    Chance Thunderstorms Chance for Measurable Precipitation 30%

    Chance
    Thunderstorms

    High: 80 °F

  • Thursday
    Night

    Chance Thunderstorms Chance for Measurable Precipitation 30%

    Chance
    Thunderstorms

    Low: 66 °F

  • Friday

    Chance Thunderstorms Chance for Measurable Precipitation 50%

    Chance
    Thunderstorms

    High: 79 °F

  • Friday
    Night

    Chance Thunderstorms Chance for Measurable Precipitation 30%

    Chance
    Thunderstorms

    Low: 67 °F

Detailed Forecast

Overnight
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 68. West wind around 5 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 88. West wind 5 to 11 mph.
Tuesday Night
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 69. West wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 80. Calm wind becoming southwest around 6 mph in the morning. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 68. South wind around 5 mph becoming light and variable. Chance of precipitation is 60%.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Friday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Independence Day
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Monday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
  Click Map For Forecast
Point Forecast:
Saint Louis MO
 38.64°N 90.23°W (Elev. 538 ft)
9:42 pm CDT Jun 29, 2015
11pm CDT Jun 29, 2015-6pm CDT Jul 6, 2015
 
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