Herrin, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Clear 80°F 27°C Heat Index: 85°F	Observed at: Herrin, IL	Elevation: 449 ft | 137 m
	Last Updated: July 16, 10:15 PM Timezone: GMT -5/-4
	Sky Conditions: Clear	Temperature: 80°F | 27°C
	Pressure: 29.59 in | 1002.1 mb	Dewpoint: 76°F | 24°C
	Humidity: 89%	Wind: SW 3 mph | SW 5 kph
	Feels Like: 90°F | 32°C	Visibility: 29.4 mi | 47.2 km
	Lat/Long: 37.8031 | -89.0275	Sunrise: 5:47 AM   Sunset: 8:17 PM

7 Day Graphical Forecast

Valid: 10:19 PM 7/16/2026

Tonight Overcast 71 °F 21% Chance Precipitation Friday Overcast 90 |74 °F 14% Chance Precipitation Saturday Overcast 92 |75 °F 28% Chance Precipitation Sunday Showers 93 |73 °F 40% Chance Precipitation Monday Heavy Drizzle 93 |72 °F 9% Chance Precipitation Tuesday Overcast 102 |73 °F 9% Chance Precipitation Wednesday Overcast 77 |61 °F 4% Chance Precipitation

7 Hour Graphical Forecast

Valid: 10:19 PM 7/16/2026

10 PM Clear 80 °F 5% Chance Precipitation

11 PM Clear 79 °F 5% Chance Precipitation

12 AM Clear 78 °F 5% Chance Precipitation

1 AM Clear 78 °F 4% Chance Precipitation

2 AM Clear 77 °F 3% Chance Precipitation

3 AM Clear 76 °F 3% Chance Precipitation

4 AM Clear 75 °F 3% Chance Precipitation

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

7 Day & Night Weather Forecast for Herrin, IL - (Fahrenheit & Celsius) Valid: 10:19 PM 7/16/2026 Tonight Overcast with a low around 71°F [22°C]. SW wind to around 7 mph [11 kph], with gusts to near 10 mph [16 kph]. Chance of precipitation 21% with QPF of 0.00 in [0.0 mm]. Friday Overcast with a high near 90°F [32°C]. W wind to around 9 mph [14 kph], with gusts to near 14 mph [23 kph]. Dewpoint near 76°F [24°C] with humidity of 95%. Pressure around 29.59 in [1002.1 mb]. UV Index: 7.75. Chance of precipitation 14% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 74°F [23°C]. W wind to around 9 mph [14 kph], with gusts to near 14 mph [23 kph]. Chance of precipitation 14% with QPF of 0.00 in [0.0 mm]. Saturday Overcast with a high near 92°F [34°C]. WSW wind to around 13 mph [20 kph], with gusts to near 20 mph [32 kph]. Dewpoint near 76°F [24°C] with humidity of 81%. Pressure around 29.59 in [1002.1 mb]. UV Index: 7.8. Chance of precipitation 28% with QPF of 0.00 in [0.0 mm]. Saturday Night Overcast with a low around 75°F [24°C]. WSW wind to around 13 mph [20 kph], with gusts to near 20 mph [32 kph]. Chance of precipitation 28% with QPF of 0.00 in [0.0 mm]. Sunday Showers with a high near 93°F [34°C]. NW wind to around 8 mph [12 kph], with gusts to near 14 mph [23 kph]. Dewpoint near 76°F [24°C] with humidity of 96%. Pressure around 29.59 in [1002.1 mb]. UV Index: 7.8. Chance of precipitation 40% with QPF of 0.20 in [5.1 mm]. Sunday Night Showers with a low around 73°F [23°C]. NW wind to around 8 mph [12 kph], with gusts to near 14 mph [23 kph]. Chance of precipitation 40% with QPF of 0.20 in [5.1 mm]. Monday Heavy Drizzle with a high near 93°F [34°C]. SSE wind to around 8 mph [12 kph], with gusts to near 18 mph [29 kph]. Dewpoint near 76°F [24°C] with humidity of 97%. Pressure around 29.59 in [1002.1 mb]. UV Index: 7.5. Chance of precipitation 9% with QPF of 0.13 in [3.3 mm]. Monday Night Heavy Drizzle with a low around 72°F [22°C]. SSE wind to around 8 mph [12 kph], with gusts to near 18 mph [29 kph]. Chance of precipitation 9% with QPF of 0.13 in [3.3 mm]. Tuesday Overcast with a high near 102°F [39°C]. WSW wind to around 15 mph [25 kph], with gusts to near 27 mph [44 kph]. Dewpoint near 76°F [24°C] with humidity of 82%. Pressure around 29.59 in [1002.1 mb]. UV Index: 7.65. Chance of precipitation 9% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 73°F [23°C]. WSW wind to around 15 mph [25 kph], with gusts to near 27 mph [44 kph]. Chance of precipitation 9% with QPF of 0.00 in [0.0 mm]. Wednesday Overcast with a high near 77°F [25°C]. NNE wind to around 12 mph [19 kph], with gusts to near 25 mph [41 kph]. Dewpoint near 76°F [24°C] with humidity of 88%. Pressure around 29.59 in [1002.1 mb]. UV Index: 7.15. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 61°F [16°C]. NNE wind to around 12 mph [19 kph], with gusts to near 25 mph [41 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 Herrin, 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: 5.1 mm | 0.20 in

Sunday Night: 5.1 mm | 0.20 in

Monday: 3.3 mm | 0.13 in

Monday Night: 3.3 mm | 0.13 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 Herrin, IL

Tonight: SW @ 11 kph | 7 mph

Friday: W @ 14 kph | 9 mph

Friday Night: W @ 14 kph | 9 mph

Saturday: WSW @ 20 kph | 13 mph

Saturday Night: WSW @ 20 kph | 13 mph

Sunday: NW @ 12 kph | 8 mph

Sunday Night: NW @ 12 kph | 8 mph

Monday: SSE @ 12 kph | 8 mph

Monday Night: SSE @ 12 kph | 8 mph

Tuesday: WSW @ 25 kph | 15 mph

Tuesday Night: WSW @ 25 kph | 15 mph

Wednesday: NNE @ 19 kph | 12 mph

Wednesday Night: NNE @ 19 kph | 12 mph

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

Tonight: 97 %

Friday: 95 %

Friday Night: 95 %

Saturday: 81 %

Saturday Night: 81 %

Sunday: 96 %

Sunday Night: 96 %

Monday: 97 %

Monday Night: 97 %

Tuesday: 82 %

Tuesday Night: 82 %

Wednesday: 88 %

Wednesday Night: 88 %

7 Day and Night - Snowfall Totals Forecast for Herrin, 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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