Updated: February 22, 2020 4:24 pm
Next update: February 23, 2020 5:25 am

WXSIM Forecast for: O'Fallon

Tonight


Sunday


Sunday
night


80% Monday


Monday
night


Tuesday


Tuesday
night


Wednesday


Wednesday
night











7
7
4
5
10
10
8
13
12

Temperature/Precipitation/PressureThunder/Dewpoint/Pressure UV/Solar radiation Wind Max/min temperature
  Conditions Temperature Wind Precipitation UV Index Description and notes
Tonight
7
  Partly cloudy in the evening, becoming partly to mostly cloudy after midnight.
Sunday
7
  Partly cloudy in the morning, becoming mostly cloudy in the afternoon. Relatively mild.
Sunday night
4
<0.25 in
PoP: 60%
Dense overcast. Patchy light fog after midnight. A slight chance of rain in the evening, then a chance of rain after midnight. Precipitation less than a quarter of an inch.
Monday
5
0.5 in
PoP: 80%
Dense overcast. Patchy light fog. Rain likely.
Scattered thundershowers possible. Precipitation mostly around half an inch.
Monday night
10
<0.25 in
PoP: 60%
Dense overcast in the evening, becoming cloudy after midnight. A chance of rain in the evening, then a slight chance of rain after midnight.
Scattered thundershowers possible. Precipitation less than a quarter of an inch.
Tuesday
10
  Mostly cloudy in the morning, becoming partly to mostly cloudy in the afternoon.
Tuesday night
8
  Mostly cloudy to cloudy in the evening, becoming cloudy after midnight. Wind chill ranging from 26 to 46.
Wednesday
13
  Dense overcast. Breezy. Wind chill ranging from 21 to 26.
Wednesday night
12
  Partly to mostly cloudy in the evening, becoming clear after midnight. Breezy and cold. Wind chill ranging from 10 to 25.
Thursday
12
  Sunny. Breezy. Wind chill ranging from 8 to 25.
Thursday night
7
  Fair in the evening, becoming mostly clear after midnight. Wind chill ranging from 16 to 25.
Friday
6
  UV
UV Index: 4
Sunny in the morning, becoming partly to mostly cloudy in the afternoon.
Friday night
6
  Cloudy in the evening, becoming fair to partly cloudy after midnight.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Pressure UV Index Description and notes
 06:43     17:48    Daylength: 11:05 Today
21:00
6
  30.21 in   Mostly cloudy.
 06:42     17:49    Daylength: 11:07 Tomorrow
00:00
7
  30.18 in   Mostly cloudy.
03:00
7
0.01 in 30.15 in   Mostly cloudy.
Light rain showers.
06:00
6
  30.12 in UV
UV Index: 1
Partly cloudy.
09:00
8
  30.13 in UV
UV Index: 3
Partly cloudy.
12:00
8
  30.07 in UV
UV Index: 3
Mostly cloudy.
15:00
7
  29.99 in UV
UV Index: 1
Mostly cloudy.
18:00
4
0.01 in 30.00 in   Cloudy.
Light rain.
21:00
4
0.02 in 29.99 in   Cloudy.
Light rain.
 06:41     17:51    Daylength: 11:10 Monday 24 Feb
00:00
3
0.09 in 29.95 in   Cloudy.
Light rain.
03:00
4
0.11 in 29.89 in   Cloudy.
Light rain.
06:00
6
0.12 in 29.82 in   Cloudy.
Light rain.
09:00
7
0.09 in 29.79 in UV
UV Index: 1
Cloudy.
Light rain.
12:00
6
0.06 in 29.69 in UV
UV Index: 1
Cloudy.
Light rain.
15:00
2
0.16 in 29.58 in   Cloudy.
Light rain.
18:00
4
0.07 in 29.58 in   Cloudy.
Light rain.
21:00
11
  29.63 in   Cloudy.
 06:39     17:52    Daylength: 11:12 Tuesday 25 Feb
00:00
12
0.01 in 29.66 in   Cloudy.
Light rain.
03:00
10
  29.71 in   Cloudy.
06:00
9
  29.77 in   Mostly cloudy.
09:00
10
  29.85 in UV
UV Index: 2
Mostly cloudy.
12:00
12
  29.87 in UV
UV Index: 2
Mostly cloudy.
15:00
12
  29.85 in UV
UV Index: 1
Partly cloudy.
18:00
5
  29.88 in   Mostly cloudy.
21:00
3
  29.91 in   Mostly cloudy.
 06:38     17:53    Daylength: 11:14 Wednesday 26 Feb
00:00
7
  29.92 in   Cloudy.
03:00
9
0.01 in 29.94 in   Cloudy.
Light snow.
06:00
11
  30.00 in   Cloudy.
09:00
13
  30.07 in UV
UV Index: 1
Mostly cloudy.
12:00
14
  30.08 in UV
UV Index: 1
Cloudy.
15:00
15
  30.06 in   Cloudy.
18:00
11
  30.12 in   Cloudy.
21:00
11
  30.15 in   Clear.
 06:36     17:54    Daylength: 11:17 Thursday 27 Feb
00:00
12
  30.16 in   Clear.
03:00
13
  30.18 in   Clear.
06:00
12
  30.21 in   Clear.
09:00
12
  30.27 in UV
UV Index: 3
Sunny.
12:00
12
  30.27 in UV
UV Index: 3
Sunny.
15:00
13
  30.23 in UV
UV Index: 1
Sunny.
18:00
8
  30.26 in   Clear.
21:00
7
  30.29 in   Clear.
 06:35     17:55    Daylength: 11:19 Friday 28 Feb
00:00
7
  30.30 in   Clear.
03:00
6
  30.28 in   Clear.
06:00
5
  30.30 in UV
UV Index: 1
Clear.
09:00
4
  30.29 in UV
UV Index: 4
Sunny.
12:00
7
  30.22 in UV
UV Index: 4
Sunny.
15:00
8
  30.13 in UV
UV Index: 1
Mostly cloudy.
18:00
6
  30.13 in   Mostly cloudy.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Thunderstorm probability Dewpoint Pressure UV Index Cloud cover Visibility
 06:43     17:48    Daylength: 11:05 Today
19:00
6
  0% 20.9° 30.21 in   6% 17 miles
20:00
6
  0% 21.6° 30.21 in   10% 17 miles
21:00
6
  0% 22.4° 30.21 in   26% 16 miles
22:00
7
  0% 23.3° 30.20 in   47% 16 miles
23:00
7
  0% 23.9° 30.19 in   70% 16 miles
 06:42     17:49    Daylength: 11:07 Tomorrow
00:00
7
  0% 24.5° 30.18 in   82% 15 miles
01:00
7
  0% 25.2° 30.17 in   76% 15 miles
02:00
7
  0% 25.9° 30.16 in   67% 15 miles
03:00
7
  0% 26.7° 30.15 in   57% 15 miles
04:00
7
  0% 27.4° 30.13 in   52% 15 miles
05:00
7
0.01 in 0% 27.9° 30.12 in   46% 14 miles
06:00
6
  0% 28.6° 30.12 in   41% 15 miles
07:00
6
  0% 29.0° 30.12 in   34% 15 miles
08:00
7
  0% 30.2° 30.13 in UV
UV Index: 1
28% 15 miles
09:00
8
  0% 32.2° 30.13 in UV
UV Index: 1
26% 15 miles
10:00
8
  0% 34.0° 30.12 in UV
UV Index: 2
28% 15 miles
11:00
8
  0% 35.7° 30.10 in UV
UV Index: 3
33% 15 miles
12:00
8
  0% 37.0° 30.07 in UV
UV Index: 3
42% 15 miles
13:00
8
  0% 38.1° 30.04 in UV
UV Index: 3
53% 15 miles
14:00
7
  0% 38.7° 30.01 in UV
UV Index: 2
65% 15 miles
15:00
7
  0% 39.1° 29.99 in UV
UV Index: 1
73% 14 miles
16:00
6
  0% 39.5° 29.99 in   76% 14 miles
17:00
5
  0% 39.7° 29.99 in   79% 14 miles
18:00
4
  0% 39.9° 30.00 in   84% 13 miles
19:00
3
0.01 in 0% 40.2° 30.00 in   90% 13 miles
20:00
4
  0% 40.7° 30.00 in   96% 12 miles
21:00
4
  0% 41.1° 29.99 in   100% 12 miles
22:00
4
0.01 in 0% 41.5° 29.98 in   100% 12 miles
23:00
4
0.01 in 0% 41.5° 29.97 in   100% 11 miles
 06:41     17:51    Daylength: 11:10 Monday 24 Feb
00:00
3
0.02 in 0% 41.4° 29.95 in   100% 8.7 miles
01:00
3
0.03 in 0% 41.7° 29.93 in   100% 7.7 miles
02:00
3
0.04 in 0% 42.0° 29.91 in   100% 6.2 miles
03:00
4
0.03 in 0% 42.2° 29.89 in   100% 4.6 miles
04:00
4
0.04 in 0% 42.3° 29.86 in   100% 3.5 miles
05:00
5
0.04 in 0% 42.3° 29.84 in   100% 4.1 miles
06:00
6
0.04 in 0% 42.3° 29.82 in   100% 4.8 miles
07:00
7
0.04 in 0% 42.3° 29.81 in   100% 5.2 miles
08:00
7
0.04 in 0% 42.6° 29.80 in   100% 3.9 miles
09:00
7
0.03 in 0% 43.6° 29.79 in   100% 3.6 miles
10:00
7
0.03 in 0% 44.5° 29.77 in UV
UV Index: 1
100% 3.5 miles
11:00
6
0.03 in <20% 45.3° 29.73 in UV
UV Index: 1
100% 3.7 miles
12:00
6
0.02 in 20-40% 46.1° 29.69 in UV
UV Index: 1
100% 3.1 miles
13:00
4
0.02 in 20-40% 47.0° 29.62 in UV
UV Index: 1
100% 5.7 miles
14:00
3
0.02 in 20-40% 47.7° 29.60 in UV
UV Index: 1
100% 6.7 miles
15:00
2
0.05 in 40-60% 48.0° 29.58 in   100% 6.7 miles
16:00
3
0.06 in 40-60% 47.7° 29.57 in   100% 7.0 miles
17:00
4
0.05 in 20-40% 47.0° 29.57 in   100% 7.2 miles
18:00
4
0.03 in 20-40% 45.9° 29.58 in   100% 9.7 miles
Move the mouse over the values for info.

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