Lerna, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Partly Cloudy 78°F 26°C Heat Index: 78°F	Observed at: Lerna, IL	Elevation: 664 ft | 202 m
	Last Updated: July 16, 10:15 PM Timezone: GMT -5/-4
	Sky Conditions: Partly Cloudy	Temperature: 78°F | 26°C
	Pressure: 29.24 in | 990.1 mb	Dewpoint: 76°F | 24°C
	Humidity: 93%	Wind: WSW 3 mph | WSW 5 kph
	Feels Like: 87°F | 31°C	Visibility: 26.5 mi | 42.7 km
	Lat/Long: 39.4183 | -88.2886	Sunrise: 5:39 AM   Sunset: 8:18 PM

7 Day Graphical Forecast

Valid: 10:16 PM 7/16/2026

Tonight Overcast 72 °F 24% Chance Precipitation Friday Overcast 87 |73 °F 24% Chance Precipitation Saturday Light Showers 91 |73 °F 41% Chance Precipitation Sunday Showers 82 |67 °F 32% Chance Precipitation Monday Light Drizzle 85 |67 °F 8% Chance Precipitation Tuesday Thunderstorm 90 |66 °F 11% Chance Precipitation Wednesday Overcast 71 |55 °F 5% Chance Precipitation

7 Hour Graphical Forecast

Valid: 10:16 PM 7/16/2026

10 PM Partly Cloudy 78 °F 2% Chance Precipitation

11 PM Mostly Clear 77 °F 3% Chance Precipitation

12 AM Overcast 76 °F 3% Chance Precipitation

1 AM Overcast 76 °F 4% Chance Precipitation

2 AM Mostly Clear 75 °F 3% Chance Precipitation

3 AM Clear 74 °F 3% Chance Precipitation

4 AM Overcast 74 °F 4% Chance Precipitation

7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall & UV Index

7 Day & Night Weather Forecast for Lerna, IL - (Fahrenheit & Celsius) Valid: 10:16 PM 7/16/2026 Tonight Overcast with a low around 72°F [22°C]. S wind to around 12 mph [19 kph], with gusts to near 13 mph [21 kph]. Chance of precipitation 24% with QPF of 0.00 in [0.0 mm]. Friday Overcast with a high near 87°F [30°C]. WSW wind to around 9 mph [15 kph], with gusts to near 17 mph [27 kph]. Dewpoint near 76°F [24°C] with humidity of 97%. Pressure around 29.24 in [990.1 mb]. UV Index: 7.65. Chance of precipitation 24% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 73°F [23°C]. WSW wind to around 9 mph [15 kph], with gusts to near 17 mph [27 kph]. Chance of precipitation 24% with QPF of 0.00 in [0.0 mm]. Saturday Light Showers with a high near 91°F [33°C]. W wind to around 16 mph [26 kph], with gusts to near 28 mph [45 kph]. Dewpoint near 76°F [24°C] with humidity of 94%. Pressure around 29.24 in [990.1 mb]. UV Index: 7.7. Chance of precipitation 41% with QPF of 0.10 in [2.6 mm]. Saturday Night Light Showers with a low around 73°F [23°C]. W wind to around 16 mph [26 kph], with gusts to near 28 mph [45 kph]. Chance of precipitation 41% with QPF of 0.10 in [2.6 mm]. Sunday Showers with a high near 82°F [28°C]. NE wind to around 8 mph [12 kph], with gusts to near 17 mph [27 kph]. Dewpoint near 76°F [24°C] with humidity of 97%. Pressure around 29.24 in [990.1 mb]. UV Index: 7.7. Chance of precipitation 32% with QPF of 0.18 in [4.5 mm]. Sunday Night Showers with a low around 67°F [20°C]. NE wind to around 8 mph [12 kph], with gusts to near 17 mph [27 kph]. Chance of precipitation 32% with QPF of 0.18 in [4.5 mm]. Monday Light Drizzle with a high near 85°F [30°C]. SSE wind to around 9 mph [15 kph], with gusts to near 22 mph [36 kph]. Dewpoint near 76°F [24°C] with humidity of 96%. Pressure around 29.24 in [990.1 mb]. UV Index: 7.25. Chance of precipitation 8% with QPF of 0.00 in [0.1 mm]. Monday Night Light Drizzle with a low around 67°F [19°C]. SSE wind to around 9 mph [15 kph], with gusts to near 22 mph [36 kph]. Chance of precipitation 8% with QPF of 0.00 in [0.1 mm]. Tuesday Thunderstorm with a high near 90°F [32°C]. W wind to around 19 mph [30 kph], with gusts to near 35 mph [56 kph]. Dewpoint near 76°F [24°C] with humidity of 95%. Pressure around 29.24 in [990.1 mb]. UV Index: 7.15. Chance of precipitation 11% with QPF of 0.02 in [0.6 mm]. Tuesday Night Thunderstorm with a low around 66°F [19°C]. W wind to around 19 mph [30 kph], with gusts to near 35 mph [56 kph]. Chance of precipitation 11% with QPF of 0.02 in [0.6 mm]. Wednesday Overcast with a high near 71°F [22°C]. NNE wind to around 14 mph [22 kph], with gusts to near 30 mph [48 kph]. Dewpoint near 76°F [24°C] with humidity of 87%. Pressure around 29.24 in [990.1 mb]. UV Index: 7.5. Chance of precipitation 5% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 55°F [13°C]. NNE wind to around 14 mph [22 kph], with gusts to near 30 mph [48 kph]. Chance of precipitation 5% with QPF of 0.00 in [0.0 mm].

---

7 Day and Night - QPF Forecast for Lerna, IL

Tonight: 0.0 mm | 0.00 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 2.6 mm | 0.10 in

Saturday Night: 2.6 mm | 0.10 in

Sunday: 4.5 mm | 0.18 in

Sunday Night: 4.5 mm | 0.18 in

Monday: 0.1 mm | 0.00 in

Monday Night: 0.1 mm | 0.00 in

Tuesday: 0.6 mm | 0.02 in

Tuesday Night: 0.6 mm | 0.02 in

Wednesday: 0.0 mm | 0.00 in

Wednesday Night: 0.0 mm | 0.00 in

7 Day and Night - Maximum Wind Speed Forecast for Lerna, IL

Tonight: S @ 19 kph | 12 mph

Friday: WSW @ 15 kph | 9 mph

Friday Night: WSW @ 15 kph | 9 mph

Saturday: W @ 26 kph | 16 mph

Saturday Night: W @ 26 kph | 16 mph

Sunday: NE @ 12 kph | 8 mph

Sunday Night: NE @ 12 kph | 8 mph

Monday: SSE @ 15 kph | 9 mph

Monday Night: SSE @ 15 kph | 9 mph

Tuesday: W @ 30 kph | 19 mph

Tuesday Night: W @ 30 kph | 19 mph

Wednesday: NNE @ 22 kph | 14 mph

Wednesday Night: NNE @ 22 kph | 14 mph

7 Day and Night - Maximum Humidity Forecast for Lerna, IL

Tonight: 95 %

Friday: 97 %

Friday Night: 97 %

Saturday: 94 %

Saturday Night: 94 %

Sunday: 97 %

Sunday Night: 97 %

Monday: 96 %

Monday Night: 96 %

Tuesday: 95 %

Tuesday Night: 95 %

Wednesday: 87 %

Wednesday Night: 87 %

7 Day and Night - Snowfall Totals Forecast for Lerna, IL

Tonight: 0.0 cm | 0.00 in

Friday: 0.0 cm | 0.00 in

Friday Night: 0.0 cm | 0.00 in

Saturday: 0.0 cm | 0.00 in

Saturday Night: 0.0 cm | 0.00 in

Sunday: 0.0 cm | 0.00 in

Sunday Night: 0.0 cm | 0.00 in

Monday: 0.0 cm | 0.00 in

Monday Night: 0.0 cm | 0.00 in

Tuesday: 0.0 cm | 0.00 in

Tuesday Night: 0.0 cm | 0.00 in

Wednesday: 0.0 cm | 0.00 in

Wednesday Night: 0.0 cm | 0.00 in

Contact Us | Mobile Private Policy | Terms & Conds | Consent Preferences | Cookie Policy Never base any life decisions on weather information from this site or anywhere over the Internet. Site is dedicated to our Lord & Savior Jesus Christ | Random Quotes of Jesus Copyright © 2026 El Dorado Weather, Inc. | Site Designed By:  Webmaster Danny