Raritan, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Clear 78°F 26°C Heat Index: 78°F	Observed at: Raritan, IL	Elevation: 830 ft | 253 m
	Last Updated: July 16, 10:15 PM Timezone: GMT -5/-4
	Sky Conditions: Clear	Temperature: 78°F | 26°C
	Pressure: 29.19 in | 988.4 mb	Dewpoint: 73°F | 23°C
	Humidity: 86%	Wind: SE 3 mph | SE 5 kph
	Feels Like: 86°F | 30°C	Visibility: 31.8 mi | 51.2 km
	Lat/Long: 40.6958 | -90.8272	Sunrise: 5:46 AM   Sunset: 8:32 PM

7 Day Graphical Forecast

Valid: 10:28 PM 7/16/2026

Tonight Overcast 71 °F 4% Chance Precipitation Friday Mostly Clear 91 |72 °F 22% Chance Precipitation Saturday Drizzle 92 |73 °F 17% Chance Precipitation Sunday Overcast 83 |67 °F 10% Chance Precipitation Monday Light Showers 91 |70 °F 17% Chance Precipitation Tuesday Overcast 84 |65 °F 17% Chance Precipitation Wednesday Overcast 70 |51 °F 4% Chance Precipitation

7 Hour Graphical Forecast

Valid: 10:28 PM 7/16/2026

10 PM Clear 79 °F 2% Chance Precipitation

11 PM Clear 78 °F 2% Chance Precipitation

12 AM Clear 77 °F 2% Chance Precipitation

1 AM Clear 76 °F 2% Chance Precipitation

2 AM Clear 75 °F 3% Chance Precipitation

3 AM Mostly Clear 74 °F 4% Chance Precipitation

4 AM Clear 73 °F 5% Chance Precipitation

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

7 Day & Night Weather Forecast for Raritan, IL - (Fahrenheit & Celsius) Valid: 10:28 PM 7/16/2026 Tonight Overcast with a low around 71°F [22°C]. S wind to around 5 mph [9 kph], with gusts to near 11 mph [17 kph]. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Friday Mostly Clear with a high near 91°F [33°C]. SW wind to around 12 mph [19 kph], with gusts to near 17 mph [27 kph]. Dewpoint near 73°F [23°C] with humidity of 94%. Pressure around 29.19 in [988.4 mb]. UV Index: 7.6. Chance of precipitation 22% with QPF of 0.00 in [0.0 mm]. Friday Night Mostly Clear with a low around 72°F [22°C]. SW wind to around 12 mph [19 kph], with gusts to near 17 mph [27 kph]. Chance of precipitation 22% with QPF of 0.00 in [0.0 mm]. Saturday Drizzle with a high near 92°F [33°C]. WNW wind to around 14 mph [23 kph], with gusts to near 27 mph [44 kph]. Dewpoint near 73°F [23°C] with humidity of 94%. Pressure around 29.19 in [988.4 mb]. UV Index: 7.7. Chance of precipitation 17% with QPF of 0.06 in [1.5 mm]. Saturday Night Drizzle with a low around 73°F [23°C]. WNW wind to around 14 mph [23 kph], with gusts to near 27 mph [44 kph]. Chance of precipitation 17% with QPF of 0.06 in [1.5 mm]. Sunday Overcast with a high near 83°F [29°C]. E wind to around 10 mph [16 kph], with gusts to near 20 mph [32 kph]. Dewpoint near 73°F [23°C] with humidity of 96%. Pressure around 29.19 in [988.4 mb]. UV Index: 7.75. Chance of precipitation 10% with QPF of 0.00 in [0.0 mm]. Sunday Night Overcast with a low around 67°F [20°C]. E wind to around 10 mph [16 kph], with gusts to near 20 mph [32 kph]. Chance of precipitation 10% with QPF of 0.00 in [0.0 mm]. Monday Light Showers with a high near 91°F [33°C]. S wind to around 12 mph [19 kph], with gusts to near 30 mph [49 kph]. Dewpoint near 73°F [23°C] with humidity of 97%. Pressure around 29.19 in [988.4 mb]. UV Index: 7.75. Chance of precipitation 17% with QPF of 0.19 in [4.7 mm]. Monday Night Light Showers with a low around 70°F [21°C]. S wind to around 12 mph [19 kph], with gusts to near 30 mph [49 kph]. Chance of precipitation 17% with QPF of 0.19 in [4.7 mm]. Tuesday Overcast with a high near 84°F [29°C]. WNW wind to around 18 mph [29 kph], with gusts to near 39 mph [62 kph]. Dewpoint near 73°F [23°C] with humidity of 82%. Pressure around 29.19 in [988.4 mb]. UV Index: 7.3. Chance of precipitation 17% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 65°F [19°C]. WNW wind to around 18 mph [29 kph], with gusts to near 39 mph [62 kph]. Chance of precipitation 17% with QPF of 0.00 in [0.0 mm]. Wednesday Overcast with a high near 70°F [21°C]. NNE wind to around 13 mph [21 kph], with gusts to near 30 mph [48 kph]. Dewpoint near 73°F [23°C] with humidity of 86%. Pressure around 29.19 in [988.4 mb]. UV Index: 7.55. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 51°F [10°C]. NNE wind to around 13 mph [21 kph], with gusts to near 30 mph [48 kph]. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Raritan, IL

Tonight: 0.0 mm | 0.00 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 1.5 mm | 0.06 in

Saturday Night: 1.5 mm | 0.06 in

Sunday: 0.0 mm | 0.00 in

Sunday Night: 0.0 mm | 0.00 in

Monday: 4.7 mm | 0.19 in

Monday Night: 4.7 mm | 0.19 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 Raritan, IL

Tonight: S @ 9 kph | 5 mph

Friday: SW @ 19 kph | 12 mph

Friday Night: SW @ 19 kph | 12 mph

Saturday: WNW @ 23 kph | 14 mph

Saturday Night: WNW @ 23 kph | 14 mph

Sunday: E @ 16 kph | 10 mph

Sunday Night: E @ 16 kph | 10 mph

Monday: S @ 19 kph | 12 mph

Monday Night: S @ 19 kph | 12 mph

Tuesday: WNW @ 29 kph | 18 mph

Tuesday Night: WNW @ 29 kph | 18 mph

Wednesday: NNE @ 21 kph | 13 mph

Wednesday Night: NNE @ 21 kph | 13 mph

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

Tonight: 95 %

Friday: 94 %

Friday Night: 94 %

Saturday: 94 %

Saturday Night: 94 %

Sunday: 96 %

Sunday Night: 96 %

Monday: 97 %

Monday Night: 97 %

Tuesday: 82 %

Tuesday Night: 82 %

Wednesday: 86 %

Wednesday Night: 86 %

7 Day and Night - Snowfall Totals Forecast for Raritan, 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

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