Thayer, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Clear 65°F 18°C	Observed at: Thayer, IL	Elevation: 680 ft | 207 m
	Last Updated: July 29, 5:15 AM Timezone: GMT -5/-4
	Sky Conditions: Clear	Temperature: 65°F | 18°C
	Pressure: 29.23 in | 989.9 mb	Dewpoint: 59°F | 15°C
	Humidity: 83%	Wind: NE 4 mph | NE 6 kph
	Feels Like: 66°F | 19°C	Visibility: 35.1 mi | 56.4 km
	Lat/Long: 39.5381 | -89.7631	Sunrise: 5:56 AM   Sunset: 8:14 PM

7 Day Graphical Forecast

Valid: 5:26 AM 7/29/2026

Tonight Clear 64 °F 1% Chance Precipitation Thursday Overcast 90 |62 °F 0% Chance Precipitation Friday Showers 79 |64 °F 69% Chance Precipitation Saturday Showers 76 |65 °F 69% Chance Precipitation Sunday Light Drizzle 81 |60 °F 19% Chance Precipitation Monday Clear 81 |61 °F 21% Chance Precipitation Tuesday Clear 83 |60 °F 14% Chance Precipitation

7 Hour Graphical Forecast

Valid: 5:26 AM 7/29/2026

5 AM Clear 65 °F 0% Chance Precipitation

6 AM Clear 64 °F 1% Chance Precipitation

7 AM Clear 65 °F 1% Chance Precipitation

8 AM Clear 69 °F 1% Chance Precipitation

9 AM Clear 72 °F 0% Chance Precipitation

10 AM Clear 76 °F 0% Chance Precipitation

11 AM Clear 80 °F 0% Chance Precipitation

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

7 Day & Night Weather Forecast for Thayer, IL - (Fahrenheit & Celsius) Valid: 5:26 AM 7/29/2026 Tonight Clear with a low around 64°F [18°C]. NE wind to around 9 mph [15 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 90°F [32°C]. ESE wind to around 6 mph [9 kph], with gusts to near 14 mph [23 kph]. Dewpoint near 59°F [15°C] with humidity of 75%. Pressure around 29.23 in [989.9 mb]. UV Index: 7.45. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Thursday Night Overcast with a low around 62°F [17°C]. ESE wind to around 6 mph [9 kph], with gusts to near 14 mph [23 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Friday Showers with a high near 79°F [26°C]. SSE wind to around 17 mph [28 kph], with gusts to near 28 mph [45 kph]. Dewpoint near 59°F [15°C] with humidity of 96%. Pressure around 29.23 in [989.9 mb]. UV Index: 5.75. Chance of precipitation 69% with QPF of 0.42 in [10.6 mm]. Friday Night Showers with a low around 64°F [18°C]. SSE wind to around 17 mph [28 kph], with gusts to near 28 mph [45 kph]. Chance of precipitation 69% with QPF of 0.42 in [10.6 mm]. Saturday Showers with a high near 76°F [24°C]. NE wind to around 17 mph [28 kph], with gusts to near 28 mph [45 kph]. Dewpoint near 59°F [15°C] with humidity of 98%. Pressure around 29.23 in [989.9 mb]. UV Index: 6.05. Chance of precipitation 69% with QPF of 0.59 in [15.0 mm]. Saturday Night Showers with a low around 65°F [18°C]. NE wind to around 17 mph [28 kph], with gusts to near 28 mph [45 kph]. Chance of precipitation 69% with QPF of 0.59 in [15.0 mm]. Sunday Light Drizzle with a high near 81°F [27°C]. NNE wind to around 11 mph [18 kph], with gusts to near 21 mph [34 kph]. Dewpoint near 59°F [15°C] with humidity of 97%. Pressure around 29.23 in [989.9 mb]. UV Index: 7.4. Chance of precipitation 19% with QPF of 0.01 in [0.2 mm]. Sunday Night Light Drizzle with a low around 60°F [15°C]. NNE wind to around 11 mph [18 kph], with gusts to near 21 mph [34 kph]. Chance of precipitation 19% with QPF of 0.01 in [0.2 mm]. Monday Clear with a high near 81°F [27°C]. ENE wind to around 7 mph [11 kph], with gusts to near 9 mph [14 kph]. Dewpoint near 59°F [15°C] with humidity of 95%. Pressure around 29.23 in [989.9 mb]. UV Index: 7.45. Chance of precipitation 21% with QPF of 0.00 in [0.0 mm]. Monday Night Clear with a low around 61°F [16°C]. ENE wind to around 7 mph [11 kph], with gusts to near 9 mph [14 kph]. Chance of precipitation 21% with QPF of 0.00 in [0.0 mm]. Tuesday Clear with a high near 83°F [28°C]. SE wind to around 8 mph [12 kph], with gusts to near 12 mph [19 kph]. Dewpoint near 59°F [15°C] with humidity of 92%. Pressure around 29.23 in [989.9 mb]. UV Index: 7.4. Chance of precipitation 14% with QPF of 0.00 in [0.0 mm]. Tuesday Night Clear with a low around 60°F [16°C]. SE wind to around 8 mph [12 kph], with gusts to near 12 mph [19 kph]. Chance of precipitation 14% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Thayer, IL

Tonight: 0.0 mm | 0.00 in

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 10.6 mm | 0.42 in

Friday Night: 10.6 mm | 0.42 in

Saturday: 15.0 mm | 0.59 in

Saturday Night: 15.0 mm | 0.59 in

Sunday: 0.2 mm | 0.01 in

Sunday Night: 0.2 mm | 0.01 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 Thayer, IL

Tonight: NE @ 15 kph | 9 mph

Thursday: ESE @ 9 kph | 6 mph

Thursday Night: ESE @ 9 kph | 6 mph

Friday: SSE @ 28 kph | 17 mph

Friday Night: SSE @ 28 kph | 17 mph

Saturday: NE @ 28 kph | 17 mph

Saturday Night: NE @ 28 kph | 17 mph

Sunday: NNE @ 18 kph | 11 mph

Sunday Night: NNE @ 18 kph | 11 mph

Monday: ENE @ 11 kph | 7 mph

Monday Night: ENE @ 11 kph | 7 mph

Tuesday: SE @ 12 kph | 8 mph

Tuesday Night: SE @ 12 kph | 8 mph

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

Tonight: 93 %

Thursday: 75 %

Thursday Night: 75 %

Friday: 96 %

Friday Night: 96 %

Saturday: 98 %

Saturday Night: 98 %

Sunday: 97 %

Sunday Night: 97 %

Monday: 95 %

Monday Night: 95 %

Tuesday: 92 %

Tuesday Night: 92 %

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

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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