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Harvard Weather Warning NWS WEATHER ALERT FOR THE HARVARD, IL AREA - Issued: 337 AM CDT Fri Sep 4 2026 Harvard Weather Warning

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Harvard, IL Weather Forecast

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Harvard, IL Weather Forecast

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Harvard IL weather - Partly Cloudy - 80°F
Partly Cloudy
80°F
Updated 1:52 pm
Feels Like 111°F
Humidity 78%
Wind S 12 mph
Barometer  29.96 in
Dew Point 73°F
Harvard IL weather - Partly Cloudy - 27°C
Partly Cloudy
27°C
Updated 1:52 pm
Feels Like 44°C
Humidity 78%
Wind S 19 km/h
Barometer  101.4 kPa
Dew Point 23°C
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Harvard Weather Forecast

THIS AFTERNOON TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT LABOR DAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT
Harvard, IL Weather - This Afternoon Clearing Harvard, IL Weather - Tonight Chance Of T-Storm Harvard, IL Weather - Saturday Partly Cloudy Harvard, IL Weather - Saturday Night Partly Cloudy Harvard, IL Weather - Sunday Partly Cloudy Harvard, IL Weather - Sunday Night Partly Cloudy Harvard, IL Weather - Labor Day Partly Cloudy Harvard, IL Weather - Monday Night Mostly Cloudy Harvard, IL Weather - Tuesday Mostly Cloudy Harvard, IL Weather - Tuesday Night Chance Of Showers Harvard, IL Weather - Wednesday Mostly Cloudy Harvard, IL Weather - Wednesday Night Chance Of Showers
Clearing Chance of T-Storm Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy Mostly Cloudy Chance of Showers Mostly Cloudy Chance of Showers
Hi: 91°FHi: 33°C
 Lo: 70°FLo: 21°C Hi: 85°FHi: 29°C
 Lo: 65°FLo: 18°C Hi: 81°FHi: 27°C
 Lo: 61°FLo: 16°C Hi: 81°FHi: 27°C
 Lo: 65°FLo: 18°C Hi: 81°FHi: 27°C
 Lo: 70°FLo: 21°C Hi: 85°FHi: 29°C
 Lo: 65°FLo: 18°C
POP: 20% POP: 50% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 1231 PM CDT Fri Sep 04 2026 Harvard, IL Weather - WeatherWorld.com

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Issued: 1256 PM CDT Fri Sep 4 2026

Key Messages

  • Today will be another unseasonably hot and humid day with peak afternoon heat indices of 100 to 110 degrees.
  • Gradually turning cooler and less humid this weekend, though remaining seasonably warm.
  • Moderate to high swim risk expected late Saturday into early Sunday during the final weekend of beach season.

Discussion

... Issued at 301 AM CDT Fri Sep 4 2026

An unusually strong late season mid-upper level ridge of high pressure continues to dominate the weather across much of the central a...