Updated: December 15, 2018 4:25 pm
Next update: December 16, 2018 5:25 am

WXSIM Forecast for: O'Fallon

Tonight


Sunday


Sunday
night


Monday


Monday
night


Tuesday


Tuesday
night


Wednesday


Wednesday
night











4
5
5
4
0
4
4
6
8

Temperature/Precipitation/PressureThunder/Dewpoint/Pressure UV/Solar radiation Wind Max/min temperature
  Conditions Temperature Wind Precipitation UV Index Description and notes
Tonight
4
  Clear.
Sunday
5
  Sunny. Relatively mild.
Sunday night
5
  Clear.
Monday
4
  Sunny. Relatively mild.
Monday night
0
  Clear.
Tuesday
4
  Partly to mostly sunny in the morning, becoming partly cloudy in the afternoon. Relatively mild.
Tuesday night
4
  Partly to mostly cloudy in the evening, becoming mostly cloudy after midnight.
Wednesday
6
  Partly cloudy in the morning, becoming partly to mostly sunny in the afternoon. Light to moderate fog in the morning. Relatively mild.
Wednesday night
8
<0.25 in
PoP: 60%
Cloudy in the evening, becoming dense overcast after midnight. Patchy light fog after midnight. Rain likely. Relatively mild. Precipitation less than a quarter of an inch.
Thursday
14
<0.25 in
PoP: 60%
Dense overcast. Patchy light fog in the morning. Rain likely. Breezy and relatively mild. Precipitation less than a quarter of an inch.
Thursday night
17
<0.1 in
PoP: 30%
Dense overcast in the evening, becoming cloudy after midnight. A slight chance of a mix of rain and snow in the evening, then a slight chance of a mix of snow and rain after midnight. Windy. Wind chill ranging from 21 to 32. Precipitation (liquid equivalent) less than a tenth of an inch.
No snow accumulation expected.
Friday
14
  Cloudy in the morning, becoming partly cloudy in the afternoon. Breezy. Wind chill ranging from 20 to 31.
Friday night
5
  Clear in the evening, becoming mostly clear after midnight. Patchy light fog after midnight.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Pressure UV Index Description and notes
 07:14     16:43    Daylength: 9:28 Tomorrow
00:00
4
  30.19 in   Clear.
03:00
3
  30.21 in   Clear.
06:00
3
  30.23 in   Clear.
09:00
4
  30.26 in UV
UV Index: 1
Sunny.
12:00
6
  30.21 in UV
UV Index: 1
Sunny.
15:00
8
  30.17 in   Sunny.
18:00
5
  30.21 in   Clear.
21:00
4
  30.23 in   Clear.
 07:15     16:43    Daylength: 9:28 Monday 17 Dec
00:00
5
  30.25 in   Clear.
03:00
5
  30.25 in   Clear.
Light fog.
06:00
4
  30.27 in   Clear.
Light fog.
09:00
4
  30.33 in UV
UV Index: 2
Sunny.
12:00
4
  30.30 in UV
UV Index: 2
Sunny.
15:00
3
  30.26 in   Sunny.
18:00
2
  30.29 in   Clear.
21:00
1
  30.28 in   Clear.
 07:16     16:43    Daylength: 9:27 Tuesday 18 Dec
00:00
2
  30.28 in   Clear.
03:00
2
  30.27 in   Clear.
06:00
2
  30.27 in   Clear.
09:00
5
  30.27 in UV
UV Index: 1
Sunny.
12:00
5
  30.20 in UV
UV Index: 1
Sunny.
15:00
5
  30.13 in   Sunny.
18:00
4
  30.13 in   Clear.
21:00
5
  30.12 in   Clear.
 07:16     16:44    Daylength: 9:27 Wednesday 19 Dec
00:00
5
  30.09 in   Clear.
03:00
5
  30.07 in   Mostly clear.
06:00
4
  30.04 in   Mostly clear.
Moderate fog.
09:00
5
  30.01 in UV
UV Index: 1
Sunny.
Moderate fog.
12:00
7
  29.92 in UV
UV Index: 1
Mostly sunny.
15:00
7
  29.83 in   Partly cloudy.
18:00
8
0.06 in 29.79 in   Mostly cloudy.
Light rain showers.
21:00
10
0.04 in 29.74 in   Cloudy.
Light rain.
 07:17     16:44    Daylength: 9:27 Thursday 20 Dec
00:00
7
0.01 in 29.67 in   Cloudy.
Light rain.
03:00
5
0.03 in 29.63 in   Cloudy.
Light rain.
06:00
6
0.05 in 29.61 in   Cloudy.
Light rain.
09:00
9
0.04 in 29.64 in   Cloudy.
Light rain.
12:00
13
0.05 in 29.63 in   Cloudy.
Light rain.
15:00
15
0.02 in 29.64 in   Cloudy.
Light rain.
18:00
16
0.02 in 29.69 in   Cloudy.
Light rain.
21:00
17
  29.72 in   Cloudy.
 07:17     16:45    Daylength: 9:27 Friday 21 Dec
00:00
18
  29.72 in   Cloudy.
03:00
17
  29.73 in   Mostly cloudy.
06:00
17
  29.77 in   Cloudy.
09:00
15
  29.83 in UV
UV Index: 1
Cloudy.
12:00
14
  29.83 in UV
UV Index: 1
Mostly cloudy.
15:00
12
  29.84 in   Sunny.
18:00
7
  29.89 in   Clear.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Thunderstorm probability Dewpoint Pressure UV Index Cloud cover Visibility
 07:14     16:42    Daylength: 9:28 Today
22:00
4
  0% 33.2° 30.16 in   0% 315 miles
23:00
4
  0% 32.7° 30.17 in   0% 315 miles
 07:14     16:43    Daylength: 9:28 Tomorrow
00:00
4
  0% 32.2° 30.19 in   0% 315 miles
01:00
4
  0% 31.8° 30.20 in   0% 315 miles
02:00
4
  0% 31.2° 30.21 in   0% 316 miles
03:00
3
  0% 30.6° 30.21 in   0% 316 miles
04:00
3
  0% 30.0° 30.21 in   0% 316 miles
05:00
3
  0% 29.4° 30.22 in   0% 316 miles
06:00
3
  0% 28.7° 30.23 in   0% 316 miles
07:00
4
  0% 28.1° 30.24 in   0% 316 miles
08:00
4
  0% 28.5° 30.25 in   0% 316 miles
09:00
4
  0% 30.1° 30.26 in UV
UV Index: 1
1% 416 miles
10:00
5
  0% 31.3° 30.25 in UV
UV Index: 1
2% 516 miles
11:00
6
  0% 32.5° 30.24 in UV
UV Index: 1
4% 616 miles
12:00
6
  0% 33.3° 30.21 in UV
UV Index: 1
5% 716 miles
13:00
7
  0% 33.5° 30.19 in UV
UV Index: 1
3% 816 miles
14:00
7
  0% 33.4° 30.17 in UV
UV Index: 1
2% 716 miles
15:00
8
  0% 33.4° 30.17 in   1% 716 miles
16:00
7
  0% 33.5° 30.18 in   1% 516 miles
17:00
6
  0% 33.6° 30.19 in   2% 416 miles
18:00
5
  0% 33.7° 30.21 in   3% 416 miles
19:00
5
  0% 33.8° 30.22 in   3% 316 miles
20:00
4
  0% 33.9° 30.23 in   3% 316 miles
21:00
4
  0% 33.9° 30.23 in   3% 315 miles
22:00
5
  0% 33.7° 30.23 in   3% 315 miles
23:00
5
  0% 33.0° 30.24 in   2% 316 miles
 07:15     16:43    Daylength: 9:28 Monday 17 Dec
00:00
5
  0% 32.4° 30.25 in   2% 316 miles
01:00
5
  0% 31.7° 30.25 in   2% 316 miles
02:00
5
  0% 31.1° 30.25 in   1% 316 miles
03:00
5
  0% 30.4° 30.25 in   0% 314 miles
04:00
5
  0% 29.7° 30.25 in   0% 311 miles
05:00
5
  0% 29.1° 30.26 in   0% 210 miles
06:00
4
  0% 28.4° 30.27 in   0% 210 miles
07:00
4
  0% 27.8° 30.29 in   0% 210 miles
08:00
4
  0% 27.7° 30.31 in   0% 216 miles
09:00
4
  0% 28.2° 30.33 in UV
UV Index: 1
0% 316 miles
10:00
4
  0% 28.0° 30.33 in UV
UV Index: 1
0% 416 miles
11:00
4
  0% 27.5° 30.33 in UV
UV Index: 2
0% 516 miles
12:00
4
  0% 27.0° 30.30 in UV
UV Index: 2
0% 515 miles
13:00
4
  0% 26.9° 30.28 in UV
UV Index: 1
0% 515 miles
14:00
4
  0% 27.0° 30.27 in UV
UV Index: 1
0% 515 miles
15:00
3
  0% 27.1° 30.26 in   0% 415 miles
16:00
3
  0% 27.1° 30.27 in   0% 415 miles
17:00
2
  0% 26.9° 30.28 in   0% 315 miles
18:00
2
  0% 26.7° 30.29 in   0% 315 miles
19:00
1
  0% 26.4° 30.29 in   0% 315 miles
20:00
1
  0% 26.1° 30.29 in   0% 315 miles
21:00
1
  0% 25.9° 30.28 in   0% 315 miles
Move the mouse over the values for info.

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