LIVE from The British School of Chicago - Chicago, IL
LIVE from The Latin School of Chicago - Chicago, IL
LIVE from Geneva MS - Geneva, IL
71°
Hi 91° / Low 69°
Feels Like: 71°
Few Clouds
Wind: S 3mph
Humidity: 90%

    Tuesday, September 1st, 2015

    Summer-like swelter arrives as meteorological autumn begins.

    Poorly ventilated, stagnant air mass makes for another hazy day. Early morning temps hover in the 70’s. Scattered afternoon clouds develop and could fuel a few isolated showers/t-storms, but less than 30% of the area. Humid, with dew points around 70 degrees. SW winds remain light, generally under 10 mph. Muggy overnight. Slight chance of an isolated t-storm late, mainly well south of the city, and into NW Indiana.

    Hi 91° Low 69°
    Partly Cloudy

      Wednesday, September 2nd, 2015

      Building cumulus clouds develop midday.

      Instability increases as heat and humidity rise, leading to a chance for scattered afternoon/evening t-storms. SW winds 10 to 15 mph.

      Hi 90° Low 66°
      Partly Cloudy

        Thursday, September 3rd, 2015

        Hazy, very warm, moderately humid.

        Afternoon temps again near 90° most areas. Widely scattered showers/t-storms possible over 40% of the area. South winds around 10 mph may turn onshore cooling area beaches several degrees.

        Hi 90° Low 65°
        Fair / Haze

          Friday, September 4th, 2015

          Upper-level ridge suppresses cloud development.

          Hazy sunshine boosts temps to around 90 degrees. Light S winds turn SE near the lake, holding beach readings to the low 80s.

          Hi 89° Low 67°
          Partly Cloudy

            Saturday, September 5th, 2015

            Tropical air remains in place.

            Temps run nearly 10 degrees above normal. Highs reach 90 degrees at most inland locations, but light SE to S winds keep lakeside readings in the 80s.

            Hi 89° Low 66°
            Partly Cloudy

              Sunday, September 6th, 2015

              Sunshine dominates the day, though more clouds develop during the afternoon. S winds remain light.

              Muggy at night. City lows hold in the 70s. Clouds increase toward Monday morning.

              Hi 85° Low 57°
              Partly Cloudy T-storms

                Monday, September 7th, 2015

                Clouds continue to thicken as a slow-moving front approaches.

                Temps peak in the mid 80s. T-storms arrive late in the day, or at night. SW winds increase to 10 to 20 mph.

                  Tuesday
                  91°
                  69°
                  Partly Cloudy

                  September 1st

                  Humidity: 53%
                  Precip: 10%
                  +
                  Summer-like swelter arrives as meteorological autumn begins.
                  Wednesday
                  91°
                  69°
                  Partly Cloudy

                  September 2nd

                  Humidity: 52%
                  Precip: 15%
                  +
                  Building cumulus clouds develop midday.
                  Thursday
                  90°
                  66°
                  Partly Cloudy

                  September 3rd

                  Humidity: 54%
                  Precip: 10%
                  +
                  Hazy, very warm, moderately humid.
                  Friday
                  90°
                  65°
                  Fair / Haze

                  September 4th

                  Humidity: 54%
                  Precip: 5%
                  +
                  Upper-level ridge suppresses cloud development.
                  Saturday
                  89°
                  67°
                  Partly Cloudy

                  September 5th

                  Humidity: 56%
                  Precip: 10%
                  +
                  Tropical air remains in place.
                  Sunday
                  89°
                  66°
                  Partly Cloudy

                  September 6th

                  Humidity: 56%
                  Precip: 10%
                  +
                  Sunshine dominates the day, though more clouds develop during the afternoon. S winds remain light.
                  Monday
                  85°
                  57°
                  Partly Cloudy T-storms

                  September 7th

                  Humidity: 56%
                  Precip: 30%
                  +
                  Clouds continue to thicken as a slow-moving front approaches.
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