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O'Fallon, Illinois
7 Day & Night Forecast & Conditions



Current Conditions Maps Radar 2 Radar 1 Satellite Alerts Climate Index
Current O'Fallon, Illinois Weather: Clear
Clear
52°F
10.9°C
Wind Chill: 52°F
Observed at: Scott Afb/bellev, IL Elevation: 453 ft | 138 m
Last Updated: September 19, 12:56 AM Timezone: GMT -5
 
Sky Conditions: Clear Temperature: 52°F | 10.9°C
Pressure: 30.32 in | 1027 mb Dewpoint: 41°F | 5.2°C
Humidity: 68% Wind: NNE 5 mph | NNE 7 kph
Feels Like: 52°F | 11.1°C Visibility: 10.0 mi | 16.1 km
Today's QPF: 0.00 in | 0.00 mm Lat/Long: 38.59 | -89.91
Sunrise: 6:45 AM on 9/19/2020 Sunset: 7:00 PM on 9/19/2020

7 Day Graphical Forecast Valid: 7:00 AM 9/19/2020
Today
Today's Weather Forecast For O'Fallon, Illinois is Sunny
Sunny
71 |43 °F
22 |6 °C
0% Chance
Precipitation
Sunday
Sunday's Weather Forecast For O'Fallon, Illinois is Sunny
Sunny
74 |48 °F
23 |9 °C
0% Chance
Precipitation
Monday
Monday's Weather Forecast For O'Fallon, Illinois is Mostly Sunny
Mostly Sunny
77 |52 °F
25 |11 °C
1% Chance
Precipitation
Tuesday
Tuesday's Weather Forecast For O'Fallon, Illinois is Mostly Sunny
Mostly Sunny
79 |53 °F
26 |12 °C
1% Chance
Precipitation
Wednesday
Wednesday's Weather Forecast For O'Fallon, Illinois is Mostly Sunny
Mostly Sunny
80 |57 °F
27 |14 °C
1% Chance
Precipitation
Thursday
Thursday's Weather Forecast For O'Fallon, Illinois is Mostly Sunny
Mostly Sunny
81 |56 °F
27 |13 °C
5% Chance
Precipitation
Friday
Friday's Weather Forecast For O'Fallon, Illinois is Mostly Sunny
Mostly Sunny
83 |58 °F
28 |14 °C
8% Chance
Precipitation

7 Hour Graphical Forecast Valid: 7:00 AM 9/19/2020
2 AM
2AMweather forecast forO'Fallon, Illinois is Clear
Clear
49 °F
0% Chance
Precipitation
3 AM
3AMweather forecast forO'Fallon, Illinois is Clear
Clear
47 °F
0% Chance
Precipitation
4 AM
4AMweather forecast forO'Fallon, Illinois is Clear
Clear
45 °F
0% Chance
Precipitation
5 AM
5AMweather forecast forO'Fallon, Illinois is Clear
Clear
44 °F
0% Chance
Precipitation
6 AM
6AMweather forecast forO'Fallon, Illinois is Clear
Clear
43 °F
0% Chance
Precipitation
7 AM
7AMweather forecast forO'Fallon, Illinois is Sunny
Sunny
44 °F
0% Chance
Precipitation
8 AM
8AMweather forecast forO'Fallon, Illinois is Sunny
Sunny
48 °F
0% Chance
Precipitation

7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall, & Ice Accumulation Forecasts
7 Day & Night Weather Forecast for O'Fallon, IL - ( Fahrenheit & Celsius)
Valid: 7:00 AM 9/19/2020
Today
Sunny Sunny with a high near 71°F [22°C]. Northeast wind to around 5 mph [8 kph], with wind gusts to near 13 mph [21 kph]. The dewpoint will be near 40°F [7°C] with a humidity of 86% and a barometric pressure around 30.28 in [1025 mb]. The UVI forecast is 6. Chance of precipitation is 0% with a qpf of 0.00 in [0.00 mm].
Tonight
Clear Clear with a low around 43°F [6°C]. East northeast wind to around 6 mph [9 kph], with wind gusts to near 7 mph [11 kph]. The dewpoint will be near 45°F [7°C] with a humidity of 52% and a barometric pressure around 30.28 in [1025 mb]. Chance of precipitation is 0% with a qpf of 0.00 in [0.00 mm].
Sunday
Sunny Sunny with a high near 74°F [23°C]. East wind to around 3 mph [5 kph], with wind gusts to near 11 mph [18 kph]. The dewpoint will be near 42°F [9°C] with a humidity of 90% and a barometric pressure around 30.31 in [1026 mb]. The UVI forecast is 6. Chance of precipitation is 0% with a qpf of 0.00 in [0.00 mm].
Sunday Night
Clear Clear with a low around 48°F [9°C]. East wind to around 4 mph [7 kph], with wind gusts to near 8 mph [14 kph]. The dewpoint will be near 48°F [9°C] with a humidity of 51% and a barometric pressure around 30.30 in [1026 mb]. Chance of precipitation is 0% with a qpf of 0.00 in [0.00 mm].
Monday
Mostly Sunny Mostly Sunny with a high near 77°F [25°C]. East southeast wind to around 3 mph [5 kph], with wind gusts to near 8 mph [14 kph]. The dewpoint will be near 44°F [12°C] with a humidity of 82% and a barometric pressure around 30.27 in [1025 mb]. The UVI forecast is 6. Chance of precipitation is 1% with a qpf of 0.00 in [0.00 mm].
Monday Night
Mostly Clear Mostly Clear with a low around 52°F [11°C]. Southeast wind to around 2 mph [4 kph], with wind gusts to near 6 mph [10 kph]. The dewpoint will be near 54°F [12°C] with a humidity of 57% and a barometric pressure around 30.24 in [1024 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]. South wind to around 2 mph [2 kph], with wind gusts to near 8 mph [13 kph]. The dewpoint will be near 51°F [13°C] with a humidity of 89% and a barometric pressure around 30.19 in [1022 mb]. The UVI forecast is 6. Chance of precipitation is 1% with a qpf of 0.00 in [0.00 mm].
Tuesday Night
Mostly Clear Mostly Clear with a low around 53°F [12°C]. South wind to around 2 mph [4 kph], with wind gusts to near 6 mph [10 kph]. The dewpoint will be near 56°F [13°C] with a humidity of 59% and a barometric pressure around 30.12 in [1020 mb]. Chance of precipitation is 1% with a qpf of 0.00 in [0.00 mm].
Wednesday
Mostly Sunny Mostly Sunny with a high near 80°F [27°C]. South southwest wind to around 2 mph [4 kph], with wind gusts to near 8 mph [13 kph]. The dewpoint will be near 52°F [13°C] with a humidity of 90% and a barometric pressure around 30.06 in [1018 mb]. The UVI forecast is 0. Chance of precipitation is 1% with a qpf of 0.00 in [0.00 mm].
Wednesday Night
Mostly Clear Mostly Clear with a low around 57°F [14°C]. South wind to around 3 mph [5 kph], with wind gusts to near 8 mph [12 kph]. The dewpoint will be near 56°F [13°C] with a humidity of 56% and a barometric pressure around 29.96 in [1015 mb]. Chance of precipitation is 2% with a qpf of 0.00 in [0.00 mm].
Thursday
Mostly Sunny Mostly Sunny with a high near 81°F [27°C]. West wind to around 3 mph [5 kph], with wind gusts to near 8 mph [13 kph]. The dewpoint will be near 56°F [15°C] with a humidity of 90% and a barometric pressure around 29.92 in [1013 mb]. The UVI forecast is null. Chance of precipitation is 5% with a qpf of 0.00 in [0.00 mm].
Thursday Night
Clear Clear with a low around 56°F [13°C]. North northwest wind to around 3 mph [5 kph], with wind gusts to near 6 mph [10 kph]. The dewpoint will be near 59°F [15°C] with a humidity of 62% and a barometric pressure around 29.93 in [1014 mb]. Chance of precipitation is 7% with a qpf of 0.00 in [0.00 mm].
Friday
Mostly Sunny Mostly Sunny with a high near 83°F [28°C]. North wind to around 2 mph [4 kph], with wind gusts to near 10 mph [17 kph]. The dewpoint will be near 55°F [18°C] with a humidity of 90% and a barometric pressure around 29.91 in [1013 mb]. The UVI forecast is null. Chance of precipitation is 8% with a qpf of 0.00 in [0.00 mm].
Friday Night
Mostly Clear Mostly Clear with a low around 58°F [14°C]. Southwest wind to around 6 mph [10 kph], with wind gusts to near 9 mph [15 kph]. The dewpoint will be near 64°F [19°C] with a humidity of 70% and a barometric pressure around 29.87 in [1012 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 O'Fallon, 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 O'Fallon, IL
Today: NE @ 21 kph | 13 mph
Tonight: ENE @ 11 kph | 7 mph
Sunday: E @ 18 kph | 11 mph
Sunday Night: E @ 12 kph | 7 mph
Monday: ESE @ 14 kph | 8 mph
Monday Night: SE @ 10 kph | 6 mph
Tuesday: S @ 13 kph | 8 mph
Tuesday Night: S @ 10 kph | 6 mph
Wednesday: SSW @ 13 kph | 8 mph
Wednesday Night: S @ 12 kph | 8 mph
Thursday: W @ 13 kph | 8 mph
Thursday Night: NNW @ 10 kph | 6 mph
Friday: N @ 17 kph | 10 mph
Friday Night: SW @ 15 kph | 9 mph

  7 Day and Night - Maximum Humidity Forecast for O'Fallon, IL
Today: 86 %
Tonight: 91 %
Sunday: 90 %
Sunday Night: 81 %
Monday: 82 %
Monday Night: 88 %
Tuesday: 89 %
Tuesday Night: 88 %
Wednesday: 90 %
Wednesday Night: 88 %
Thursday: 90 %
Thursday Night: 88 %
Friday: 90 %
Friday Night: 90 %

  7 Day and Night - Snowfall Totals Forecast for O'Fallon, 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 O'Fallon, 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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