Posen, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Overcast 77°F 25°C Heat Index: 77°F	Observed at: Posen, IL	Elevation: 514 ft | 157 m
	Last Updated: July 16, 10:15 PM Timezone: GMT -5/-4
	Sky Conditions: Overcast	Temperature: 77°F | 25°C
	Pressure: 29.51 in | 999.3 mb	Dewpoint: 74°F | 23°C
	Humidity: 90%	Wind: SSE 1 mph | SSE 2 kph
	Feels Like: 87°F | 31°C	Visibility: 28.9 mi | 46.6 km
	Lat/Long: 38.2583 | -89.3356	Sunrise: 5:47 AM   Sunset: 8:19 PM

7 Day Graphical Forecast

Valid: 10:29 PM 7/16/2026

Tonight Overcast 72 °F 29% Chance Precipitation Friday Overcast 90 |73 °F 16% Chance Precipitation Saturday Mostly Clear 92 |74 °F 34% Chance Precipitation Sunday Light Showers 91 |73 °F 34% Chance Precipitation Monday Light Showers 92 |70 °F 5% Chance Precipitation Tuesday Overcast 98 |69 °F 3% Chance Precipitation Wednesday Overcast 74 |61 °F 3% Chance Precipitation

7 Hour Graphical Forecast

Valid: 10:29 PM 7/16/2026

10 PM Overcast 78 °F 8% Chance Precipitation

11 PM Partly Cloudy 77 °F 5% Chance Precipitation

12 AM Mostly Clear 76 °F 3% Chance Precipitation

1 AM Clear 76 °F 3% Chance Precipitation

2 AM Clear 75 °F 2% Chance Precipitation

3 AM Clear 75 °F 3% Chance Precipitation

4 AM Clear 74 °F 4% Chance Precipitation

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

7 Day & Night Weather Forecast for Posen, IL - (Fahrenheit & Celsius) Valid: 10:29 PM 7/16/2026 Tonight Overcast with a low around 72°F [22°C]. S wind to around 8 mph [12 kph], with gusts to near 10 mph [16 kph]. Chance of precipitation 29% with QPF of 0.00 in [0.0 mm]. Friday Overcast with a high near 90°F [32°C]. W wind to around 10 mph [15 kph], with gusts to near 18 mph [28 kph]. Dewpoint near 74°F [23°C] with humidity of 95%. Pressure around 29.51 in [999.3 mb]. UV Index: 7.75. Chance of precipitation 16% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 73°F [23°C]. W wind to around 10 mph [15 kph], with gusts to near 18 mph [28 kph]. Chance of precipitation 16% with QPF of 0.00 in [0.0 mm]. Saturday Mostly Clear with a high near 92°F [34°C]. W wind to around 14 mph [22 kph], with gusts to near 22 mph [35 kph]. Dewpoint near 74°F [23°C] with humidity of 86%. Pressure around 29.51 in [999.3 mb]. UV Index: 7.85. Chance of precipitation 34% with QPF of 0.00 in [0.0 mm]. Saturday Night Mostly Clear with a low around 74°F [23°C]. W wind to around 14 mph [22 kph], with gusts to near 22 mph [35 kph]. Chance of precipitation 34% with QPF of 0.00 in [0.0 mm]. Sunday Light Showers with a high near 91°F [33°C]. N wind to around 11 mph [18 kph], with gusts to near 16 mph [26 kph]. Dewpoint near 74°F [23°C] with humidity of 95%. Pressure around 29.51 in [999.3 mb]. UV Index: 7.8. Chance of precipitation 34% with QPF of 0.18 in [4.6 mm]. Sunday Night Light Showers with a low around 73°F [23°C]. N wind to around 11 mph [18 kph], with gusts to near 16 mph [26 kph]. Chance of precipitation 34% with QPF of 0.18 in [4.6 mm]. Monday Light Showers with a high near 92°F [33°C]. SSE wind to around 9 mph [14 kph], with gusts to near 21 mph [34 kph]. Dewpoint near 74°F [23°C] with humidity of 95%. Pressure around 29.51 in [999.3 mb]. UV Index: 7.2. Chance of precipitation 5% with QPF of 0.21 in [5.2 mm]. Monday Night Light Showers with a low around 70°F [21°C]. SSE wind to around 9 mph [14 kph], with gusts to near 21 mph [34 kph]. Chance of precipitation 5% with QPF of 0.21 in [5.2 mm]. Tuesday Overcast with a high near 98°F [37°C]. W wind to around 19 mph [31 kph], with gusts to near 29 mph [47 kph]. Dewpoint near 74°F [23°C] with humidity of 87%. Pressure around 29.51 in [999.3 mb]. UV Index: 7.65. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 69°F [20°C]. W wind to around 19 mph [31 kph], with gusts to near 29 mph [47 kph]. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm]. Wednesday Overcast with a high near 74°F [23°C]. NNE wind to around 11 mph [18 kph], with gusts to near 26 mph [42 kph]. Dewpoint near 74°F [23°C] with humidity of 88%. Pressure around 29.51 in [999.3 mb]. UV Index: 7.15. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 61°F [16°C]. NNE wind to around 11 mph [18 kph], with gusts to near 26 mph [42 kph]. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm].

---

7 Day and Night - QPF Forecast for Posen, IL

Tonight: 0.0 mm | 0.00 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 0.0 mm | 0.00 in

Saturday Night: 0.0 mm | 0.00 in

Sunday: 4.6 mm | 0.18 in

Sunday Night: 4.6 mm | 0.18 in

Monday: 5.2 mm | 0.21 in

Monday Night: 5.2 mm | 0.21 in

Tuesday: 0.0 mm | 0.00 in

Tuesday Night: 0.0 mm | 0.00 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 Posen, IL

Tonight: S @ 12 kph | 8 mph

Friday: W @ 15 kph | 10 mph

Friday Night: W @ 15 kph | 10 mph

Saturday: W @ 22 kph | 14 mph

Saturday Night: W @ 22 kph | 14 mph

Sunday: N @ 18 kph | 11 mph

Sunday Night: N @ 18 kph | 11 mph

Monday: SSE @ 14 kph | 9 mph

Monday Night: SSE @ 14 kph | 9 mph

Tuesday: W @ 31 kph | 19 mph

Tuesday Night: W @ 31 kph | 19 mph

Wednesday: NNE @ 18 kph | 11 mph

Wednesday Night: NNE @ 18 kph | 11 mph

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

Tonight: 97 %

Friday: 95 %

Friday Night: 95 %

Saturday: 86 %

Saturday Night: 86 %

Sunday: 95 %

Sunday Night: 95 %

Monday: 95 %

Monday Night: 95 %

Tuesday: 87 %

Tuesday Night: 87 %

Wednesday: 88 %

Wednesday Night: 88 %

7 Day and Night - Snowfall Totals Forecast for Posen, 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