Updated: February 23, 2019 5:25 am
Next update: February 23, 2019 4:25 pm

WXSIM Forecast for: O'Fallon

Today


Tonight


Sunday


Sunday
night


Monday


Monday
night


Tuesday


Tuesday
night


Wednesday











5
18
20
9
4
4
7
6
10

Temperature/Precipitation/PressureThunder/Dewpoint/Pressure UV/Solar radiation Wind Max/min temperature
  Conditions Temperature Wind Precipitation UV Index Description and notes
Today
5
<0.25 in
PoP: 60%
Cloudy. Patchy light fog. Rain likely.
Scattered thundershowers possible. Relatively mild. Precipitation less than a quarter of an inch.
Tonight
18
<0.1 in
PoP: 20%
Partly cloudy. A slight chance of rain.
Scattered thundershowers possible. Breezy. Precipitation less than a tenth of an inch.
Sunday
20
  Partly cloudy in the morning, becoming sunny in the afternoon. Windy.
Sunday night
9
  Clear. Cold.
Monday
4
  Sunny.
Monday night
4
  Fair to partly cloudy in the evening, becoming partly cloudy after midnight.
Tuesday
7
  UV
UV Index: 4
Partly cloudy in the morning, becoming mostly sunny in the afternoon.
Tuesday night
6
  Fair in the evening, becoming partly to mostly cloudy after midnight.
Wednesday
10
<0.1 in
PoP: 30%
Cloudy. A chance of rain. Precipitation less than a tenth of an inch.
Wednesday night
8
  Fair to partly cloudy in the evening, becoming mostly clear after midnight. Patchy light fog after midnight. Wind chill ranging from 15 to 30.
Thursday
6
  Mostly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. Patchy light fog in the morning. Cold. Wind chill ranging from 15 to 23.
Thursday night
4
  Partly cloudy.
Friday
7
  Mostly cloudy to cloudy in the morning, becoming cloudy in the afternoon.
Friday night
20
<0.25 in
PoP: 60%
Dense overcast in the evening, becoming cloudy after midnight. Patchy light fog in the evening. A chance of rain in the evening, then a slight chance of a mix of snow and rain after midnight. Breezy. Wind chill ranging from 18 to 36. Precipitation (liquid equivalent) less than a quarter of an inch.
No snow accumulation expected.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Pressure UV Index Description and notes
 06:42     17:50    Daylength: 11:08 Today
12:00
8
0.07 in 29.80 in UV
UV Index: 2
Cloudy.
Light rain.
15:00
9
0.06 in 29.62 in UV
UV Index: 1
Cloudy.
Light rain.
18:00
11
0.01 in 29.52 in   Mostly cloudy.
Light rain showers.
21:00
11
  29.47 in   Clear.
 06:40     17:51    Daylength: 11:10 Tomorrow
00:00
15
  29.46 in   Mostly cloudy.
03:00
21
  29.57 in   Mostly cloudy.
06:00
21
  29.76 in UV
UV Index: 1
Mostly cloudy.
09:00
20
  29.96 in UV
UV Index: 4
Mostly sunny.
12:00
19
  30.08 in UV
UV Index: 4
Sunny.
15:00
19
  30.13 in UV
UV Index: 2
Sunny.
18:00
14
  30.25 in   Clear.
21:00
11
  30.35 in   Clear.
 06:39     17:52    Daylength: 11:13 Monday 25 Feb
00:00
10
  30.43 in   Clear.
03:00
9
  30.50 in   Clear.
06:00
5
  30.52 in UV
UV Index: 1
Clear.
09:00
3
  30.56 in UV
UV Index: 3
Sunny.
12:00
3
  30.51 in UV
UV Index: 4
Sunny.
15:00
3
  30.41 in UV
UV Index: 1
Sunny.
18:00
5
  30.38 in   Clear.
21:00
5
  30.41 in   Mostly clear.
 06:37     17:53    Daylength: 11:15 Tuesday 26 Feb
00:00
4
  30.42 in   Mostly clear.
03:00
4
  30.40 in   Clear.
06:00
5
  30.40 in UV
UV Index: 1
Clear.
09:00
7
  30.39 in UV
UV Index: 4
Sunny.
12:00
8
  30.30 in UV
UV Index: 4
Sunny.
15:00
9
  30.17 in UV
UV Index: 2
Sunny.
18:00
7
  30.14 in   Mostly clear.
21:00
7
  30.14 in   Mostly clear.
 06:36     17:54    Daylength: 11:18 Wednesday 27 Feb
00:00
6
  30.12 in   Mostly cloudy.
03:00
6
  30.09 in   Mostly cloudy.
06:00
5
0.01 in 30.09 in   Mostly cloudy.
Light rain showers.
09:00
5
  30.14 in UV
UV Index: 2
Mostly cloudy.
12:00
12
0.03 in 30.19 in UV
UV Index: 1
Mostly cloudy.
Light rain showers.
15:00
9
  30.19 in UV
UV Index: 1
Cloudy.
18:00
9
  30.25 in   Mostly clear.
21:00
9
  30.30 in   Clear.
Light fog.
 06:35     17:55    Daylength: 11:20 Thursday 28 Feb
00:00
8
  30.30 in   Clear.
Light fog.
03:00
7
  30.28 in   Clear.
Light fog.
06:00
6
  30.27 in UV
UV Index: 1
Clear.
Light fog.
09:00
6
  30.27 in UV
UV Index: 2
Partly cloudy.
12:00
5
  30.23 in UV
UV Index: 2
Mostly cloudy.
15:00
6
  30.16 in UV
UV Index: 1
Mostly cloudy.
18:00
4
  30.14 in   Mostly cloudy.
21:00
4
  30.15 in   Mostly clear.
 06:33     17:56    Daylength: 11:23 Friday 01 Mar
00:00
4
  30.11 in   Partly cloudy.
03:00
4
  30.07 in   Partly cloudy.
06:00
5
  30.01 in UV
UV Index: 1
Partly cloudy.
09:00
7
  29.98 in UV
UV Index: 2
Mostly cloudy.
12:00
9
  29.86 in UV
UV Index: 2
Mostly cloudy.
15:00
9
0.01 in 29.73 in UV
UV Index: 1
Mostly cloudy.
Light rain showers.
18:00
7
0.06 in 29.67 in   Cloudy.
Light rain.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Thunderstorm probability Dewpoint Pressure UV Index Cloud cover Visibility
 06:42     17:50    Daylength: 11:08 Today
12:00
8
0.02 in <20% 47.8° 29.80 in UV
UV Index: 2
97% 305 miles
13:00
9
0.02 in 20-40% 48.9° 29.74 in UV
UV Index: 2
97% 305 miles
14:00
9
0.03 in 20-40% 50.2° 29.68 in UV
UV Index: 1
98% 305 miles
15:00
9
0.02 in 40-60% 51.7° 29.62 in UV
UV Index: 1
98% 304 miles
16:00
10
0.02 in 40-60% 53.8° 29.58 in   97% 304 miles
17:00
11
0.02 in 20-40% 55.6° 29.55 in   96% 405 miles
18:00
11
0.01 in 40-60% 54.9° 29.52 in   95% 407 miles
19:00
12
  20-40% 49.8° 29.50 in   67% 408 miles
20:00
11
  0% 43.1° 29.49 in   35% 308 miles
21:00
11
  0% 38.6° 29.47 in   4% 308 miles
22:00
11
  0% 38.0° 29.47 in   2% 308 miles
23:00
13
  0% 38.9° 29.46 in   3% 308 miles
 06:40     17:51    Daylength: 11:10 Tomorrow
00:00
15
  0% 39.1° 29.46 in   18% 309 miles
01:00
17
  0% 38.0° 29.48 in   37% 409 miles
02:00
19
  0% 36.4° 29.52 in   61% 409 miles
03:00
21
  0% 34.9° 29.57 in   74% 409 miles
04:00
22
  0% 33.5° 29.62 in   74% 409 miles
05:00
22
  0% 31.9° 29.69 in   74% 309 miles
06:00
21
  0% 30.3° 29.76 in   74% 310 miles
07:00
21
  0% 29.0° 29.83 in   55% 310 miles
08:00
20
  0% 27.0° 29.90 in UV
UV Index: 1
34% 310 miles
09:00
20
  0% 24.0° 29.96 in UV
UV Index: 2
12% 310 miles
10:00
19
  0% 23.5° 30.01 in UV
UV Index: 3
8% 410 miles
11:00
19
  0% 24.0° 30.05 in UV
UV Index: 4
6% 410 miles
12:00
19
  0% 24.1° 30.08 in UV
UV Index: 4
3% 510 miles
13:00
19
  0% 23.4° 30.09 in UV
UV Index: 4
2% 610 miles
14:00
19
  0% 22.6° 30.11 in UV
UV Index: 3
1% 610 miles
15:00
19
  0% 21.5° 30.13 in UV
UV Index: 2
0% 610 miles
16:00
18
  0% 20.7° 30.16 in UV
UV Index: 1
0% 510 miles
17:00
17
  0% 19.7° 30.20 in   0% 410 miles
18:00
14
  0% 18.7° 30.25 in   0% 310 miles
19:00
13
  0% 17.8° 30.29 in   0% 310 miles
20:00
12
  0% 17.2° 30.32 in   0% 310 miles
21:00
11
  0% 16.7° 30.35 in   0% 210 miles
22:00
11
  0% 16.5° 30.38 in   0% 210 miles
23:00
11
  0% 16.2° 30.40 in   0% 210 miles
 06:39     17:52    Daylength: 11:13 Monday 25 Feb
00:00
10
  0% 16.0° 30.43 in   0% 210 miles
01:00
9
  0% 15.5° 30.48 in   0% 210 miles
02:00
9
  0% 14.8° 30.49 in   0% 210 miles
03:00
9
  0% 14.1° 30.50 in   0% 210 miles
04:00
7
  0% 13.3° 30.50 in   0% 210 miles
05:00
6
  0% 11.9° 30.51 in   0% 210 miles
06:00
5
  0% 10.5° 30.52 in   0% 210 miles
07:00
4
  0% 9.3° 30.53 in   0% 210 miles
08:00
3
  0% 8.3° 30.55 in UV
UV Index: 1
0% 210 miles
09:00
3
  0% 6.7° 30.56 in UV
UV Index: 1
0% 209 miles
10:00
3
  0% 6.0° 30.55 in UV
UV Index: 3
0% 209 miles
11:00
3
  0% 5.6° 30.54 in UV
UV Index: 3
0% 309 miles
Move the mouse over the values for info.

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