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Grand Detour, Illinois
7 Day & Night Forecast & Conditions



Current Conditions Maps Radar 2 Radar 1 Satellite Alerts Climate Index
Current Grand Detour, Illinois Weather: Partly Cloudy
Partly Cloudy
74°F
23.3°C
Heat Index: 74°F
Observed at: Sterling Rockfal, IL Elevation: 646 ft | 197 m
Last Updated: July 31, 12:56 PM Timezone: GMT -5
 
Sky Conditions: Partly Cloudy Temperature: 74°F | 23.3°C
Pressure: 29.65 in | 1004 mb Dewpoint: 63°F | 17.2°C
Humidity: 69% Wind: W 8 mph | W 13 kph
Feels Like: 74°F | 23.3°C Visibility: 10.0 mi | 16.1 km
Today's QPF: 0.00 in | 0.00 mm Lat/Long: 41.9 | -89.41
Sunrise: 5:52 AM on 7/31/2021 Sunset: 8:17 PM on 7/31/2021

7 Day Graphical Forecast Valid: 7:00 AM 7/31/2021
Today
Today's Weather Forecast For Grand Detour, Illinois is Hazy
Hazy
79 |60 °F
26 |16 °C
0% Chance
Precipitation
Sunday
Sunday's Weather Forecast For Grand Detour, Illinois is Hazy
Hazy
78 |54 °F
25 |12 °C
3% Chance
Precipitation
Monday
Monday's Weather Forecast For Grand Detour, Illinois is Partly Cloudy
Partly Cloudy
77 |55 °F
25 |13 °C
0% Chance
Precipitation
Tuesday
Tuesday's Weather Forecast For Grand Detour, Illinois is Mostly Sunny
Mostly Sunny
79 |58 °F
26 |14 °C
0% Chance
Precipitation
Wednesday
Wednesday's Weather Forecast For Grand Detour, Illinois is Mostly Sunny
Mostly Sunny
81 |60 °F
27 |16 °C
0% Chance
Precipitation
Thursday
Thursday's Weather Forecast For Grand Detour, Illinois is Mostly Sunny
Mostly Sunny
82 |62 °F
28 |17 °C
0% Chance
Precipitation
Friday
Friday's Weather Forecast For Grand Detour, Illinois is Partly Cloudy
Partly Cloudy
84 |68 °F
29 |20 °C
0% Chance
Precipitation

7 Hour Graphical Forecast Valid: 7:00 AM 7/31/2021
2 PM
2PMweather forecast forGrand Detour, Illinois is Partly Cloudy
Partly Cloudy
77 °F
0% Chance
Precipitation
3 PM
3PMweather forecast forGrand Detour, Illinois is Hazy
Hazy
78 °F
0% Chance
Precipitation
4 PM
4PMweather forecast forGrand Detour, Illinois is Hazy
Hazy
78 °F
0% Chance
Precipitation
5 PM
5PMweather forecast forGrand Detour, Illinois is Hazy
Hazy
79 °F
0% Chance
Precipitation
6 PM
6PMweather forecast forGrand Detour, Illinois is Hazy
Hazy
78 °F
0% Chance
Precipitation
7 PM
7PMweather forecast forGrand Detour, Illinois is Hazy
Hazy
77 °F
0% Chance
Precipitation
8 PM
8PMweather forecast forGrand Detour, Illinois is Hazy
Hazy
75 °F
0% Chance
Precipitation

7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall, & Ice Accumulation Forecasts
7 Day & Night Weather Forecast for Grand Detour, IL - ( Fahrenheit & Celsius)
Valid: 7:00 AM 7/31/2021
Today
Hazy Hazy with a high near 79°F [26°C]. West northwest wind to around 1 mph [2 kph], with wind gusts to near 12 mph [19 kph]. The dewpoint will be near 60°F [17°C] with a humidity of 94% and a barometric pressure around 30.01 in [1016 mb]. The UVI forecast is 9. Chance of precipitation is 0% with a qpf of 0.00 in [0.00 mm].
Tonight
Hazy Hazy with a low around 60°F [16°C]. West northwest wind to around 7 mph [10 kph], with wind gusts to near 11 mph [18 kph]. The dewpoint will be near 63°F [18°C] with a humidity of 62% and a barometric pressure around 29.95 in [1014 mb]. Chance of precipitation is 9% with a qpf of 0.00 in [0.00 mm].
Sunday
Hazy Hazy with a high near 78°F [25°C]. "NNE" wind to around 7 mph [10 kph], with wind gusts to near 17 mph [28 kph]. The dewpoint will be near 61°F [17°C] with a humidity of 97% and a barometric pressure around 30.01 in [1016 mb]. The UVI forecast is 8. Chance of precipitation is 3% with a qpf of 0.00 in [0.00 mm].
Sunday Night
Mostly Clear Mostly Clear with a low around 54°F [12°C]. North wind to around 8 mph [14 kph], with wind gusts to near 9 mph [15 kph]. The dewpoint will be near 57°F [14°C] with a humidity of 55% and a barometric pressure around 30.10 in [1019 mb]. Chance of precipitation is 0% with a qpf of 0.00 in [0.00 mm].
Monday
Partly Cloudy Partly Cloudy with a high near 77°F [25°C]. "NNE" wind to around 1 mph [2 kph], with wind gusts to near 9 mph [15 kph]. The dewpoint will be near 54°F [14°C] with a humidity of 93% and a barometric pressure around 30.12 in [1020 mb]. The UVI forecast is 8. Chance of precipitation is 0% with a qpf of 0.00 in [0.00 mm].
Monday Night
Mostly Clear Mostly Clear with a low around 55°F [13°C]. North wind to around 2 mph [3 kph], with wind gusts to near 3 mph [5 kph]. The dewpoint will be near 58°F [14°C] with a humidity of 59% and a barometric pressure around 30.10 in [1019 mb]. Chance of precipitation is 0% with a qpf of 0.00 in [0.00 mm].
Tuesday
Mostly Sunny Mostly Sunny with a high near 79°F [26°C]. West wind to around 1 mph [2 kph], with wind gusts to near 9 mph [15 kph]. The dewpoint will be near 56°F [15°C] with a humidity of 93% and a barometric pressure around 30.11 in [1020 mb]. The UVI forecast is 7. Chance of precipitation is 0% with a qpf of 0.00 in [0.00 mm].
Tuesday Night
Mostly Clear Mostly Clear with a low around 58°F [14°C]. West southwest wind to around 2 mph [4 kph], with wind gusts to near 5 mph [8 kph]. The dewpoint will be near 60°F [16°C] with a humidity of 58% and a barometric pressure around 30.10 in [1019 mb]. Chance of precipitation is 0% with a qpf of 0.00 in [0.00 mm].
Wednesday
Mostly Sunny Mostly Sunny with a high near 81°F [27°C]. North northwest wind to around 2 mph [4 kph], with wind gusts to near 9 mph [15 kph]. The dewpoint will be near 58°F [16°C] with a humidity of 91% and a barometric pressure around 30.12 in [1020 mb]. The UVI forecast is 0. Chance of precipitation is 0% with a qpf of 0.00 in [0.00 mm].
Wednesday Night
Mostly Clear Mostly Clear with a low around 60°F [16°C]. Southeast wind to around 2 mph [4 kph], with wind gusts to near 6 mph [9 kph]. The dewpoint will be near 62°F [17°C] with a humidity of 58% and a barometric pressure around 30.09 in [1019 mb]. Chance of precipitation is 0% with a qpf of 0.00 in [0.00 mm].
Thursday
Mostly Sunny Mostly Sunny with a high near 82°F [28°C]. Southeast wind to around 2 mph [4 kph], with wind gusts to near 10 mph [17 kph]. The dewpoint will be near 58°F [17°C] with a humidity of 86% and a barometric pressure around 30.07 in [1018 mb]. The UVI forecast is null. Chance of precipitation is 0% with a qpf of 0.00 in [0.00 mm].
Thursday Night
Mostly Clear Mostly Clear with a low around 62°F [17°C]. South wind to around 5 mph [8 kph], with wind gusts to near 6 mph [9 kph]. The dewpoint will be near 63°F [17°C] with a humidity of 58% and a barometric pressure around 30.03 in [1017 mb]. Chance of precipitation is 0% with a qpf of 0.00 in [0.00 mm].
Friday
Partly Cloudy Partly Cloudy with a high near 84°F [29°C]. South southeast wind to around 3 mph [5 kph], with wind gusts to near 11 mph [18 kph]. The dewpoint will be near 60°F [18°C] with a humidity of 87% and a barometric pressure around 30.01 in [1016 mb]. The UVI forecast is null. Chance of precipitation is 0% with a qpf of 0.00 in [0.00 mm].
Friday Night
Mostly Clear Mostly Clear with a low around 68°F [20°C]. South wind to around 7 mph [11 kph], with wind gusts to near 33 mph [53 kph]. The dewpoint will be near 65°F [21°C] with a humidity of 60% and a barometric pressure around 29.96 in [1015 mb]. Chance of precipitation is 0% with a qpf of 0.00 in [0.00 mm].



QPF - Max Wind Speed - Max Humidity - Snowfall - Ice Accumulation
  7 Day and Night - QPF Forecast for Grand Detour, IL
Today: 0.00 mm | 0.00 in
Tonight: 0.00 mm | 0.00 in
Sunday: 0.00 mm | 0.00 in
Sunday Night: 0.00 mm | 0.00 in
Monday: 0.00 mm | 0.00 in
Monday Night: 0.00 mm | 0.00 in
Tuesday: 0.00 mm | 0.00 in
Tuesday Night: 0.00 mm | 0.00 in
Wednesday: 0.00 mm | 0.00 in
Wednesday Night: 0.00 mm | 0.00 in
Thursday: 0.00 mm | 0.00 in
Thursday Night: 0.00 mm | 0.00 in
Friday: 0.00 mm | 0.00 in
Friday Night: 0.00 mm | 0.00 in

  7 Day and Night - Maximum Wind Speed Forecast for Grand Detour, IL
Today: WNW @ 19 kph | 12 mph
Tonight: WNW @ 18 kph | 11 mph
Sunday: NNE @ 28 kph | 17 mph
Sunday Night: N @ 20 kph | 12 mph
Monday: NNE @ 15 kph | 9 mph
Monday Night: N @ 5 kph | 3 mph
Tuesday: W @ 15 kph | 9 mph
Tuesday Night: WSW @ 8 kph | 5 mph
Wednesday: NNW @ 15 kph | 9 mph
Wednesday Night: SE @ 9 kph | 6 mph
Thursday: SE @ 17 kph | 10 mph
Thursday Night: S @ 9 kph | 6 mph
Friday: SSE @ 18 kph | 11 mph
Friday Night: S @ 53 kph | 33 mph

  7 Day and Night - Maximum Humidity Forecast for Grand Detour, IL
Today: 94 %
Tonight: 100 %
Sunday: 97 %
Sunday Night: 93 %
Monday: 93 %
Monday Night: 92 %
Tuesday: 93 %
Tuesday Night: 91 %
Wednesday: 91 %
Wednesday Night: 87 %
Thursday: 86 %
Thursday Night: 86 %
Friday: 87 %
Friday Night: 96 %

  7 Day and Night - Snowfall Totals Forecast for Grand Detour, IL
Today: 0.00 cm | 0.00 in
Tonight: 0.00 cm | 0.00 in
Sunday: 0.00 cm | 0.00 in
Sunday Night: 0.00 cm | 0.00 in
Monday: 0.00 cm | 0.00 in
Monday Night: 0.00 cm | 0.00 in
Tuesday: 0.00 cm | 0.00 in
Tuesday Night: 0.00 cm | 0.00 in
Wednesday: 0.00 cm | 0.00 in
Wednesday Night: 0.00 cm | 0.00 in
Thursday: 0.00 cm | 0.00 in
Thursday Night: 0.00 cm | 0.00 in
Friday: 0.00 cm | 0.00 in
Friday Night: 0.00 cm | 0.00 in

  7 Day and Night - Ice Accumulation Forecast for Grand Detour, IL
Today: 0.00 mm | 0.00 in
Tonight: 0.00 mm | 0.00 in
Sunday: 0.00 mm | 0.00 in
Sunday Night: 0.00 mm | 0.00 in
Monday: 0.00 mm | 0.00 in
Monday Night: 0.00 mm | 0.00 in
Tuesday: 0.00 mm | 0.00 in
Tuesday Night: 0.00 mm | 0.00 in
Wednesday: 0.00 mm | 0.00 in
Wednesday Night: 0.00 mm | 0.00 in
Thursday: 0.00 mm | 0.00 in
Thursday Night: 0.00 mm | 0.00 in
Friday: 0.00 mm | 0.00 in
Friday Night: 0.00 mm | 0.00 in
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