Cahokia, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Clear 69°F 21°C	Observed at: Cahokia, IL	Elevation: 554 ft | 169 m
	Last Updated: July 29, 6:15 AM Timezone: GMT -5/-4
	Sky Conditions: Clear	Temperature: 69°F | 21°C
	Pressure: 29.49 in | 998.5 mb	Dewpoint: 65°F | 18°C
	Humidity: 87%	Wind: NNE 4 mph | NNE 6 kph
	Feels Like: 73°F | 23°C	Visibility: 30.2 mi | 48.6 km
	Lat/Long: 38.5708 | -90.19	Sunrise: 6:00 AM   Sunset: 8:14 PM

7 Day Graphical Forecast

Valid: 6:25 AM 7/29/2026

Today Mostly Clear 91 |70 °F 33 |21 °C 1% Chance Precipitation Thursday Overcast 93 |66 °F 34 |19 °C 0% Chance Precipitation Friday Showers 85 |70 °F 29 |21 °C 65% Chance Precipitation Saturday Light Drizzle 80 |69 °F 27 |21 °C 65% Chance Precipitation Sunday Clear 85 |66 °F 30 |19 °C 24% Chance Precipitation Monday Clear 89 |68 °F 32 |20 °C 19% Chance Precipitation Tuesday Clear 91 |67 °F 33 |20 °C 7% Chance Precipitation

7 Hour Graphical Forecast

Valid: 6:25 AM 7/29/2026

6 AM Clear 70 °F 0% Chance Precipitation

7 AM Clear 70 °F 1% Chance Precipitation

8 AM Clear 74 °F 0% Chance Precipitation

9 AM Clear 77 °F 1% Chance Precipitation

10 AM Clear 81 °F 1% Chance Precipitation

11 AM Clear 84 °F 0% Chance Precipitation

12 PM Clear 86 °F 0% Chance Precipitation

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

7 Day & Night Weather Forecast for Cahokia, IL - (Fahrenheit & Celsius) Valid: 6:25 AM 7/29/2026 Today Mostly Clear with a high near 91°F [33°C]. NE wind to around 8 mph [13 kph], with gusts to near 13 mph [22 kph]. Dewpoint near 65°F [18°C] with humidity of 88%. Pressure around 29.49 in [998.5 mb]. UV Index: 7.7. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Tonight Mostly Clear with a low around 70°F [21°C]. NE wind to around 8 mph [13 kph], with gusts to near 13 mph [22 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Thursday Overcast with a high near 93°F [34°C]. E wind to around 8 mph [12 kph], with gusts to near 15 mph [24 kph]. Dewpoint near 65°F [18°C] with humidity of 74%. Pressure around 29.49 in [998.5 mb]. UV Index: 7.35. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Thursday Night Overcast with a low around 66°F [19°C]. E wind to around 8 mph [12 kph], with gusts to near 15 mph [24 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Friday Showers with a high near 85°F [29°C]. SSE wind to around 14 mph [22 kph], with gusts to near 30 mph [49 kph]. Dewpoint near 65°F [18°C] with humidity of 91%. Pressure around 29.49 in [998.5 mb]. UV Index: 6.7. Chance of precipitation 65% with QPF of 0.25 in [6.4 mm]. Friday Night Showers with a low around 70°F [21°C]. SSE wind to around 14 mph [22 kph], with gusts to near 30 mph [49 kph]. Chance of precipitation 65% with QPF of 0.25 in [6.4 mm]. Saturday Light Drizzle with a high near 80°F [27°C]. NNE wind to around 14 mph [22 kph], with gusts to near 25 mph [40 kph]. Dewpoint near 65°F [18°C] with humidity of 97%. Pressure around 29.49 in [998.5 mb]. UV Index: 5.45. Chance of precipitation 65% with QPF of 0.04 in [0.9 mm]. Saturday Night Light Drizzle with a low around 69°F [21°C]. NNE wind to around 14 mph [22 kph], with gusts to near 25 mph [40 kph]. Chance of precipitation 65% with QPF of 0.04 in [0.9 mm]. Sunday Clear with a high near 85°F [30°C]. NNE wind to around 11 mph [18 kph], with gusts to near 24 mph [38 kph]. Dewpoint near 65°F [18°C] with humidity of 86%. Pressure around 29.49 in [998.5 mb]. UV Index: 7.5. Chance of precipitation 24% with QPF of 0.00 in [0.0 mm]. Sunday Night Clear with a low around 66°F [19°C]. NNE wind to around 11 mph [18 kph], with gusts to near 24 mph [38 kph]. Chance of precipitation 24% with QPF of 0.00 in [0.0 mm]. Monday Clear with a high near 89°F [32°C]. E wind to around 9 mph [14 kph], with gusts to near 13 mph [21 kph]. Dewpoint near 65°F [18°C] with humidity of 85%. Pressure around 29.49 in [998.5 mb]. UV Index: 7.55. Chance of precipitation 19% with QPF of 0.00 in [0.0 mm]. Monday Night Clear with a low around 68°F [20°C]. E wind to around 9 mph [14 kph], with gusts to near 13 mph [21 kph]. Chance of precipitation 19% with QPF of 0.00 in [0.0 mm]. Tuesday Clear with a high near 91°F [33°C]. ESE wind to around 10 mph [15 kph], with gusts to near 17 mph [27 kph]. Dewpoint near 65°F [18°C] with humidity of 81%. Pressure around 29.49 in [998.5 mb]. UV Index: 7.55. Chance of precipitation 7% with QPF of 0.00 in [0.0 mm]. Tuesday Night Clear with a low around 67°F [20°C]. ESE wind to around 10 mph [15 kph], with gusts to near 17 mph [27 kph]. Chance of precipitation 7% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Cahokia, IL

Today: 0.0 mm | 0.00 in

Tonight: 0.0 mm | 0.00 in

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 6.4 mm | 0.25 in

Friday Night: 6.4 mm | 0.25 in

Saturday: 0.9 mm | 0.04 in

Saturday Night: 0.9 mm | 0.04 in

Sunday: 0.0 mm | 0.00 in

Sunday Night: 0.0 mm | 0.00 in

Monday: 0.0 mm | 0.00 in

Monday Night: 0.0 mm | 0.00 in

Tuesday: 0.0 mm | 0.00 in

Tuesday Night: 0.0 mm | 0.00 in

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

Today: NE @ 13 kph | 8 mph

Tonight: NE @ 13 kph | 8 mph

Thursday: E @ 12 kph | 8 mph

Thursday Night: E @ 12 kph | 8 mph

Friday: SSE @ 22 kph | 14 mph

Friday Night: SSE @ 22 kph | 14 mph

Saturday: NNE @ 22 kph | 14 mph

Saturday Night: NNE @ 22 kph | 14 mph

Sunday: NNE @ 18 kph | 11 mph

Sunday Night: NNE @ 18 kph | 11 mph

Monday: E @ 14 kph | 9 mph

Monday Night: E @ 14 kph | 9 mph

Tuesday: ESE @ 15 kph | 10 mph

Tuesday Night: ESE @ 15 kph | 10 mph

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

Today: 88 %

Tonight: 88 %

Thursday: 74 %

Thursday Night: 74 %

Friday: 91 %

Friday Night: 91 %

Saturday: 97 %

Saturday Night: 97 %

Sunday: 86 %

Sunday Night: 86 %

Monday: 85 %

Monday Night: 85 %

Tuesday: 81 %

Tuesday Night: 81 %

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

Today: 0.0 cm | 0.00 in

Tonight: 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

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

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