Extreme Fire Weather Threat in Southern California; Chilly Weather for Much of U.S.; Heavy Rain in South Plains

Cold, Canadian air will cause Santa Ana winds to develop across southern California for extreme fire weather threats early this week, and critical Fire Weather threats through mid-week. This cold air is also plunging much of the U.S. below to much below normal temperatures, especially, across the High Plains. Heavy rains continue across the South Plains as moist air rides over this cold front. Read More >

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Overcast

39°F

4°C

Humidity 86%
Wind Speed N 17 G 25 mph
Barometer 30.26 in (1024.6 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 15 Oct 7:54 am CDT
Extended Forecast for

3 Miles WNW Grafton IL

Frost Advisory October 15, 11:00pm until October 16, 09:00am
Click here for hazard details and duration
Frost Advisory
  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 49. Northwest wind 10 to 15 mph.

    Decreasing
    Clouds

    High: 49 °F

  • Tonight

    Tonight: Areas of frost after 2am.  Otherwise, mostly clear, with a low around 34. Northwest wind 3 to 7 mph.

    Mostly Clear
    then Areas
    Frost

    Low: 34 °F

  • Tuesday

    Tuesday: Widespread frost, mainly before 7am.  Otherwise, sunny, with a high near 57. West wind 5 to 9 mph.

    Frost then
    Sunny

    High: 57 °F

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 39. West wind around 7 mph.

    Mostly Clear

    Low: 39 °F

  • Wednesday

    Wednesday: Sunny, with a high near 58. North wind 6 to 9 mph.

    Sunny

    High: 58 °F

  • Wednesday
    Night

    Wednesday Night: Areas of frost after 4am.  Otherwise, clear, with a low around 36.

    Clear then
    Areas Frost

    Low: 36 °F

  • Thursday

    Thursday: Areas of frost before 8am.  Otherwise, sunny, with a high near 57.

    Areas Frost
    then Sunny

    High: 57 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 42.

    Partly Cloudy

    Low: 42 °F

  • Friday

    Friday: A 30 percent chance of showers.  Mostly cloudy, with a high near 56.

    Chance
    Showers

    High: 56 °F

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 49. Northwest wind 10 to 15 mph.
Tonight
Areas of frost after 2am. Otherwise, mostly clear, with a low around 34. Northwest wind 3 to 7 mph.
Tuesday
Widespread frost, mainly before 7am. Otherwise, sunny, with a high near 57. West wind 5 to 9 mph.
Tuesday Night
Mostly clear, with a low around 39. West wind around 7 mph.
Wednesday
Sunny, with a high near 58. North wind 6 to 9 mph.
Wednesday Night
Areas of frost after 4am. Otherwise, clear, with a low around 36.
Thursday
Areas of frost before 8am. Otherwise, sunny, with a high near 57.
Thursday Night
Partly cloudy, with a low around 42.
Friday
A 30 percent chance of showers. Mostly cloudy, with a high near 56.
Friday Night
Mostly cloudy, with a low around 44.
Saturday
Sunny, with a high near 57.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 53.
Click Map For Forecast
Point Forecast:
3 Miles WNW Grafton IL
 39°N 90.47°W (Elev. 801 ft)
6:27 am CDT Oct 15, 2018
8am CDT Oct 15, 2018-6pm CDT Oct 21, 2018
 
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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