Jacob, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Clear 86°F 30°C Heat Index: 105°F	Observed at: Jacob, IL	Elevation: 447 ft | 136 m
	Last Updated: July 26, 10:00 PM Timezone: GMT -5/-4
	Sky Conditions: Clear	Temperature: 86°F | 30°C
	Pressure: 29.49 in | 998.8 mb	Dewpoint: 83°F | 28°C
	Humidity: 89%	Wind: SW 3 mph | SW 5 kph
	Feels Like: 101°F | 38°C	Visibility: 28.7 mi | 46.3 km
	Lat/Long: 37.745 | -89.5369	Sunrise: 5:57 AM   Sunset: 8:12 PM

7 Day Graphical Forecast

Valid: 12:57 PM 7/28/2026

Tonight Foggy 76 °F 10% Chance Precipitation Monday Drizzle 100 |79 °F 5% Chance Precipitation Tuesday Overcast 93 |76 °F 12% Chance Precipitation Wednesday Light Drizzle 89 |69 °F 12% Chance Precipitation Thursday Overcast 92 |65 °F 2% Chance Precipitation Friday Heavy Showers 78 |67 °F 43% Chance Precipitation Saturday Drizzle 78 |65 °F 43% Chance Precipitation

7 Hour Graphical Forecast

Valid: 12:57 PM 7/28/2026

12 PM Overcast 92 °F 1% Chance Precipitation

1 PM Overcast 93 °F 1% Chance Precipitation

2 PM Overcast 93 °F 5% Chance Precipitation

3 PM Overcast 93 °F 5% Chance Precipitation

4 PM Overcast 93 °F 5% Chance Precipitation

5 PM Overcast 89 °F 5% Chance Precipitation

6 PM Overcast 86 °F 5% Chance Precipitation

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

7 Day & Night Weather Forecast for Jacob, IL - (Fahrenheit & Celsius) Valid: 12:57 PM 7/28/2026 Tonight Foggy with a low around 76°F [24°C]. SW wind to around 10 mph [17 kph], with gusts to near 17 mph [27 kph]. Chance of precipitation 10% with QPF of 0.00 in [0.0 mm]. Monday Drizzle with a high near 100°F [38°C]. SW wind to around 18 mph [28 kph], with gusts to near 33 mph [53 kph]. Dewpoint near 83°F [28°C] with humidity of 92%. Pressure around 29.49 in [998.8 mb]. UV Index: 7.75. Chance of precipitation 5% with QPF of 0.03 in [0.7 mm]. Monday Night Drizzle with a low around 79°F [26°C]. SW wind to around 18 mph [28 kph], with gusts to near 33 mph [53 kph]. Chance of precipitation 5% with QPF of 0.03 in [0.7 mm]. Tuesday Overcast with a high near 93°F [34°C]. N wind to around 12 mph [19 kph], with gusts to near 20 mph [32 kph]. Dewpoint near 83°F [28°C] with humidity of 86%. Pressure around 29.49 in [998.8 mb]. UV Index: 7.6. Chance of precipitation 12% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 76°F [24°C]. N wind to around 12 mph [19 kph], with gusts to near 20 mph [32 kph]. Chance of precipitation 12% with QPF of 0.00 in [0.0 mm]. Wednesday Light Drizzle with a high near 89°F [32°C]. NE wind to around 9 mph [15 kph], with gusts to near 17 mph [28 kph]. Dewpoint near 83°F [28°C] with humidity of 93%. Pressure around 29.49 in [998.8 mb]. UV Index: 7.75. Chance of precipitation 12% with QPF of 0.00 in [0.1 mm]. Wednesday Night Light Drizzle with a low around 69°F [21°C]. NE wind to around 9 mph [15 kph], with gusts to near 17 mph [28 kph]. Chance of precipitation 12% with QPF of 0.00 in [0.1 mm]. Thursday Overcast with a high near 92°F [33°C]. SSE wind to around 8 mph [13 kph], with gusts to near 20 mph [32 kph]. Dewpoint near 83°F [28°C] with humidity of 90%. Pressure around 29.49 in [998.8 mb]. UV Index: 6.4. Chance of precipitation 2% with QPF of 0.00 in [0.0 mm]. Thursday Night Overcast with a low around 65°F [18°C]. SSE wind to around 8 mph [13 kph], with gusts to near 20 mph [32 kph]. Chance of precipitation 2% with QPF of 0.00 in [0.0 mm]. Friday Heavy Showers with a high near 78°F [26°C]. SSE wind to around 20 mph [32 kph], with gusts to near 40 mph [64 kph]. Dewpoint near 83°F [28°C] with humidity of 99%. Pressure around 29.49 in [998.8 mb]. UV Index: 2.15. Chance of precipitation 43% with QPF of 1.30 in [33.0 mm]. Friday Night Heavy Showers with a low around 67°F [19°C]. SSE wind to around 20 mph [32 kph], with gusts to near 40 mph [64 kph]. Chance of precipitation 43% with QPF of 1.30 in [33.0 mm]. Saturday Drizzle with a high near 78°F [25°C]. NE wind to around 17 mph [27 kph], with gusts to near 27 mph [43 kph]. Dewpoint near 83°F [28°C] with humidity of 99%. Pressure around 29.49 in [998.8 mb]. UV Index: 4.1. Chance of precipitation 43% with QPF of 0.11 in [2.8 mm]. Saturday Night Drizzle with a low around 65°F [18°C]. NE wind to around 17 mph [27 kph], with gusts to near 27 mph [43 kph]. Chance of precipitation 43% with QPF of 0.11 in [2.8 mm].

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7 Day and Night - QPF Forecast for Jacob, IL

Tonight: 0.0 mm | 0.00 in

Monday: 0.7 mm | 0.03 in

Monday Night: 0.7 mm | 0.03 in

Tuesday: 0.0 mm | 0.00 in

Tuesday Night: 0.0 mm | 0.00 in

Wednesday: 0.1 mm | 0.00 in

Wednesday Night: 0.1 mm | 0.00 in

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 33.0 mm | 1.30 in

Friday Night: 33.0 mm | 1.30 in

Saturday: 2.8 mm | 0.11 in

Saturday Night: 2.8 mm | 0.11 in

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

Tonight: SW @ 17 kph | 10 mph

Monday: SW @ 28 kph | 18 mph

Monday Night: SW @ 28 kph | 18 mph

Tuesday: N @ 19 kph | 12 mph

Tuesday Night: N @ 19 kph | 12 mph

Wednesday: NE @ 15 kph | 9 mph

Wednesday Night: NE @ 15 kph | 9 mph

Thursday: SSE @ 13 kph | 8 mph

Thursday Night: SSE @ 13 kph | 8 mph

Friday: SSE @ 32 kph | 20 mph

Friday Night: SSE @ 32 kph | 20 mph

Saturday: NE @ 27 kph | 17 mph

Saturday Night: NE @ 27 kph | 17 mph

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

Tonight: 96 %

Monday: 92 %

Monday Night: 92 %

Tuesday: 86 %

Tuesday Night: 86 %

Wednesday: 93 %

Wednesday Night: 93 %

Thursday: 90 %

Thursday Night: 90 %

Friday: 99 %

Friday Night: 99 %

Saturday: 99 %

Saturday Night: 99 %

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

Tonight: 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

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

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