Boulder, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Light Showers 78°F 26°C Heat Index: 78°F	Observed at: Boulder, IL	Elevation: 571 ft | 174 m
	Last Updated: July 27, 8:30 PM Timezone: GMT -5/-4
	Sky Conditions: Light Showers	Temperature: 78°F | 26°C
	Pressure: 29.23 in | 989.8 mb	Dewpoint: 70°F | 21°C
	Humidity: 77%	Wind: SSW 24 mph | SSW 39 kph
	Feels Like: 76°F | 24°C	Visibility: 20 mi | 32.2 km
	Lat/Long: 38.6967 | -89.2256	Sunrise: 5:54 AM   Sunset: 8:12 PM

7 Day Graphical Forecast

Valid: 1:11 PM 7/28/2026

Tonight Overcast 73 °F 16% Chance Precipitation Tuesday Overcast 92 |77 °F 3% Chance Precipitation Wednesday Partly Cloudy 83 |66 °F 1% Chance Precipitation Thursday Overcast 85 |63 °F 0% Chance Precipitation Friday Heavy Showers 73 |67 °F 47% Chance Precipitation Saturday Drizzle 79 |65 °F 51% Chance Precipitation Sunday Clear 84 |63 °F 22% Chance Precipitation

7 Hour Graphical Forecast

Valid: 1:11 PM 7/28/2026

1 PM Clear 91 °F 1% Chance Precipitation

2 PM Overcast 91 °F 2% Chance Precipitation

3 PM Overcast 91 °F 2% Chance Precipitation

4 PM Overcast 92 °F 2% Chance Precipitation

5 PM Overcast 88 °F 3% Chance Precipitation

6 PM Overcast 86 °F 3% Chance Precipitation

7 PM Overcast 84 °F 3% Chance Precipitation

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

7 Day & Night Weather Forecast for Boulder, IL - (Fahrenheit & Celsius) Valid: 1:11 PM 7/28/2026 Tonight Overcast with a low around 73°F [23°C]. SSW wind to around 14 mph [22 kph], with gusts to near 34 mph [55 kph]. Chance of precipitation 16% with QPF of 0.00 in [0.0 mm]. Tuesday Overcast with a high near 92°F [33°C]. NNW wind to around 12 mph [19 kph], with gusts to near 23 mph [37 kph]. Dewpoint near 70°F [21°C] with humidity of 84%. Pressure around 29.23 in [989.8 mb]. UV Index: 7.6. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 77°F [25°C]. NNW wind to around 12 mph [19 kph], with gusts to near 23 mph [37 kph]. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm]. Wednesday Partly Cloudy with a high near 83°F [28°C]. NE wind to around 11 mph [18 kph], with gusts to near 20 mph [33 kph]. Dewpoint near 70°F [21°C] with humidity of 84%. Pressure around 29.23 in [989.8 mb]. UV Index: 7.65. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Wednesday Night Partly Cloudy with a low around 66°F [19°C]. NE wind to around 11 mph [18 kph], with gusts to near 20 mph [33 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Thursday Overcast with a high near 85°F [30°C]. SE wind to around 8 mph [12 kph], with gusts to near 12 mph [19 kph]. Dewpoint near 70°F [21°C] with humidity of 90%. Pressure around 29.23 in [989.8 mb]. UV Index: 7.5. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Thursday Night Overcast with a low around 63°F [17°C]. SE wind to around 8 mph [12 kph], with gusts to near 12 mph [19 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Friday Heavy Showers with a high near 73°F [23°C]. ESE wind to around 15 mph [23 kph], with gusts to near 25 mph [41 kph]. Dewpoint near 70°F [21°C] with humidity of 98%. Pressure around 29.23 in [989.8 mb]. UV Index: 1.35. Chance of precipitation 47% with QPF of 0.65 in [16.4 mm]. Friday Night Heavy Showers with a low around 67°F [19°C]. ESE wind to around 15 mph [23 kph], with gusts to near 25 mph [41 kph]. Chance of precipitation 47% with QPF of 0.65 in [16.4 mm]. Saturday Drizzle with a high near 79°F [26°C]. NE wind to around 14 mph [23 kph], with gusts to near 24 mph [38 kph]. Dewpoint near 70°F [21°C] with humidity of 98%. Pressure around 29.23 in [989.8 mb]. UV Index: 6.65. Chance of precipitation 51% with QPF of 0.08 in [2.1 mm]. Saturday Night Drizzle with a low around 65°F [18°C]. NE wind to around 14 mph [23 kph], with gusts to near 24 mph [38 kph]. Chance of precipitation 51% with QPF of 0.08 in [2.1 mm]. Sunday Clear with a high near 84°F [29°C]. NNE wind to around 12 mph [19 kph], with gusts to near 16 mph [25 kph]. Dewpoint near 70°F [21°C] with humidity of 97%. Pressure around 29.23 in [989.8 mb]. UV Index: 7.4. Chance of precipitation 22% with QPF of 0.00 in [0.0 mm]. Sunday Night Clear with a low around 63°F [17°C]. NNE wind to around 12 mph [19 kph], with gusts to near 16 mph [25 kph]. Chance of precipitation 22% with QPF of 0.00 in [0.0 mm].

---

7 Day and Night - QPF Forecast for Boulder, IL

Tonight: 0.0 mm | 0.00 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

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 16.4 mm | 0.65 in

Friday Night: 16.4 mm | 0.65 in

Saturday: 2.1 mm | 0.08 in

Saturday Night: 2.1 mm | 0.08 in

Sunday: 0.0 mm | 0.00 in

Sunday Night: 0.0 mm | 0.00 in

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

Tonight: SSW @ 22 kph | 14 mph

Tuesday: NNW @ 19 kph | 12 mph

Tuesday Night: NNW @ 19 kph | 12 mph

Wednesday: NE @ 18 kph | 11 mph

Wednesday Night: NE @ 18 kph | 11 mph

Thursday: SE @ 12 kph | 8 mph

Thursday Night: SE @ 12 kph | 8 mph

Friday: ESE @ 23 kph | 15 mph

Friday Night: ESE @ 23 kph | 15 mph

Saturday: NE @ 23 kph | 14 mph

Saturday Night: NE @ 23 kph | 14 mph

Sunday: NNE @ 19 kph | 12 mph

Sunday Night: NNE @ 19 kph | 12 mph

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

Tonight: 97 %

Tuesday: 84 %

Tuesday Night: 84 %

Wednesday: 84 %

Wednesday Night: 84 %

Thursday: 90 %

Thursday Night: 90 %

Friday: 98 %

Friday Night: 98 %

Saturday: 98 %

Saturday Night: 98 %

Sunday: 97 %

Sunday Night: 97 %

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

Tonight: 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

Thursday: 0.0 cm | 0.00 in

Thursday Night: 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

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