Updated: February 19, 2019 5:25 am
Next update: February 19, 2019 4:25 pm

WXSIM Forecast for: O'Fallon

Today


50% Tonight


Wednesday


Wednesday
night


Thursday


Thursday
night


Friday


Friday
night


80% Saturday











9
10
7
7
2
4
8
6
6

Temperature/Precipitation/PressureSnowdepthThunder/Dewpoint/Pressure UV/Solar radiation Wind Max/min temperature
  Conditions Temperature Wind Precipitation UV Index Description and notes
Today
9
  Mostly cloudy in the morning, becoming cloudy in the afternoon. Wind chill ranging from 21 to 30.
Tonight
10
0.1 in
PoP: 50%
Dense overcast. A chance of a mix of sleet, snow, and rain in the evening, then a chance of a mix of sleet, rain, snow, and freezing rain after midnight. Wind chill ranging from 23 to 29. Precipitation (liquid equivalent) mostly around a tenth of an inch.
Little or no snow or ice (on ground) accumulation expected.
Little if any freezing rain accumulation.
Wednesday
7
  Dense overcast in the morning, becoming cloudy in the afternoon.
Wednesday night
7
  Partly to mostly cloudy in the evening, becoming partly cloudy after midnight.
Thursday
2
  Partly cloudy. Patchy light fog in the morning.
Thursday night
4
  Partly cloudy in the evening, becoming partly to mostly cloudy after midnight.
Friday
8
  Partly to mostly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon.
Friday night
6
  Cloudy.
Saturday
6
0.5 in
PoP: 80%
Cloudy in the morning, becoming dense overcast in the afternoon. Patchy light fog. A slight chance of rain in the morning, then rain likely in the afternoon. Precipitation mostly around half an inch.
Saturday night
22
<0.1 in
PoP: 30%
Mostly cloudy in the evening, becoming partly to mostly cloudy after midnight. Patchy light fog in the evening. A chance of rain. Breezy. Precipitation less than a tenth of an inch.
Sunday
19
  Partly to mostly cloudy in the morning, becoming mostly sunny in the afternoon. Windy.
Sunday night
8
  Clear.
Monday
3
  Mostly sunny in the morning, becoming partly to mostly cloudy in the afternoon.
Monday night
6
  Mostly cloudy.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Snowdepth Pressure UV Index Description and notes
 06:47     17:45    Daylength: 10:58 Today
15:00
9
    30.40 in UV
UV Index: 1
Sunny.
18:00
9
0.02 in   30.35 in   Mostly cloudy.
Light snow showers.
21:00
10
0.07 in   30.29 in   Cloudy.
Light snow.
 06:46     17:46    Daylength: 11:00 Tomorrow
00:00
10
0.02 in 0.1 in 30.17 in   Cloudy.
Light snow.
03:00
9
0.02 in   30.04 in   Cloudy.
Light snow.
06:00
8
    29.93 in   Cloudy.
09:00
5
    29.89 in UV
UV Index: 2
Mostly cloudy.
12:00
5
    29.82 in UV
UV Index: 2
Mostly cloudy.
15:00
8
    29.76 in UV
UV Index: 1
Mostly cloudy.
18:00
8
    29.84 in   Mostly cloudy.
21:00
7
    29.92 in   Partly cloudy.
 06:44     17:48    Daylength: 11:03 Thursday 21 Feb
00:00
7
    30.01 in   Partly cloudy.
03:00
5
    30.11 in   Clear.
Light fog.
06:00
4
    30.16 in UV
UV Index: 1
Clear.
Light fog.
09:00
2
    30.25 in UV
UV Index: 4
Sunny.
12:00
2
    30.27 in UV
UV Index: 4
Sunny.
15:00
2
    30.23 in UV
UV Index: 1
Sunny.
18:00
3
    30.26 in   Clear.
21:00
4
    30.30 in   Clear.
 06:43     17:49    Daylength: 11:05 Friday 22 Feb
00:00
4
    30.32 in   Clear.
03:00
4
    30.33 in   Clear.
06:00
6
    30.32 in UV
UV Index: 1
Clear.
09:00
8
    30.34 in UV
UV Index: 3
Sunny.
12:00
8
    30.29 in UV
UV Index: 4
Mostly cloudy.
15:00
9
    30.19 in UV
UV Index: 1
Cloudy.
18:00
7
    30.17 in   Mostly cloudy.
21:00
8
    30.15 in   Mostly cloudy.
 06:42     17:50    Daylength: 11:08 Saturday 23 Feb
00:00
5
    30.10 in   Cloudy.
03:00
4
    30.04 in   Cloudy.
06:00
5
    29.99 in   Cloudy.
09:00
6
0.01 in   29.93 in UV
UV Index: 2
Cloudy.
Light rain.
12:00
7
0.51 in   29.81 in UV
UV Index: 2
Cloudy.
Moderate rain.
15:00
6
0.09 in   29.61 in   Cloudy.
Light rain.
18:00
7
0.02 in   29.50 in   Mostly cloudy.
Light rain showers.
21:00
9
    29.44 in   Mostly cloudy.
 06:40     17:51    Daylength: 11:10 Sunday 24 Feb
00:00
22
    29.48 in   Mostly cloudy.
03:00
22
    29.62 in   Mostly cloudy.
06:00
20
    29.75 in UV
UV Index: 1
Mostly cloudy.
09:00
19
    29.87 in UV
UV Index: 3
Mostly cloudy.
12:00
19
    29.92 in UV
UV Index: 4
Partly cloudy.
15:00
18
    29.95 in UV
UV Index: 2
Sunny.
18:00
10
    30.05 in   Clear.
21:00
8
    30.16 in   Clear.
 06:39     17:52    Daylength: 11:13 Monday 25 Feb
00:00
6
    30.22 in   Clear.
03:00
5
    30.28 in   Clear.
06:00
3
    30.34 in UV
UV Index: 1
Clear.
09:00
3
    30.39 in UV
UV Index: 4
Sunny.
12:00
2
    30.36 in UV
UV Index: 4
Sunny.
15:00
6
    30.27 in UV
UV Index: 1
Sunny.
18:00
5
    30.24 in   Clear.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Snowdepth Dewpoint Pressure UV Index Cloud cover Visibility
 06:47     17:45    Daylength: 10:58 Today
13:00
8
    22.7° 30.49 in UV
UV Index: 2
8% 519 miles
14:00
9
    22.9° 30.44 in UV
UV Index: 1
4% 619 miles
15:00
9
    23.1° 30.40 in UV
UV Index: 1
5% 618 miles
16:00
9
    23.6° 30.37 in   0% 518 miles
17:00
9
    23.9° 30.36 in   0% 519 miles
18:00
9
    24.2° 30.35 in   19% 515 miles
19:00
9
    24.8° 30.34 in   47% 410 miles
20:00
10
0.01 in   25.6° 30.32 in   81% 410 miles
21:00
10
0.02 in   26.4° 30.29 in   100% 411 miles
22:00
10
0.02 in   27.5° 30.25 in   100% 311 miles
23:00
10
0.03 in   28.6° 30.21 in   100% 311 miles
 06:46     17:46    Daylength: 11:00 Tomorrow
00:00
10
0.01 in 0 in 29.6° 30.17 in   100% 309 miles
01:00
10
    30.1° 30.13 in   98% 309 miles
02:00
10
0.01 in   30.3° 30.09 in   97% 313 miles
03:00
9
0.01 in   30.6° 30.04 in   95% 312 miles
04:00
9
    30.9° 29.99 in   96% 308 miles
05:00
8
0.01 in   31.2° 29.95 in   98% 310 miles
06:00
8
    31.6° 29.93 in   98% 209 miles
07:00
7
    31.8° 29.91 in   96% 209 miles
08:00
6
    32.1° 29.90 in   94% 213 miles
09:00
5
    33.1° 29.89 in UV
UV Index: 1
92% 315 miles
10:00
5
    34.5° 29.87 in UV
UV Index: 1
91% 315 miles
11:00
5
    36.1° 29.85 in UV
UV Index: 2
91% 315 miles
12:00
5
    37.5° 29.82 in UV
UV Index: 2
90% 315 miles
13:00
6
    38.4° 29.79 in UV
UV Index: 2
89% 415 miles
14:00
7
    39.3° 29.77 in UV
UV Index: 1
89% 415 miles
15:00
8
    39.6° 29.76 in UV
UV Index: 1
88% 415 miles
16:00
9
    38.4° 29.78 in   83% 415 miles
17:00
9
    36.4° 29.81 in   79% 415 miles
18:00
8
    34.5° 29.84 in   74% 316 miles
19:00
8
    33.2° 29.87 in   62% 316 miles
20:00
8
    32.2° 29.90 in   48% 316 miles
21:00
7
    31.4° 29.92 in   36% 315 miles
22:00
7
    31.0° 29.95 in   39% 315 miles
23:00
7
    30.7° 29.97 in   42% 215 miles
 06:44     17:48    Daylength: 11:03 Thursday 21 Feb
00:00
7
    30.3° 30.01 in   44% 215 miles
01:00
6
    29.6° 30.07 in   29% 215 miles
02:00
6
    28.6° 30.09 in   15% 215 miles
03:00
5
    27.9° 30.11 in   0% 212 miles
04:00
4
    27.2° 30.12 in   0% 210 miles
05:00
4
    26.5° 30.14 in   0% 209 miles
06:00
4
    25.9° 30.16 in   0% 208 miles
07:00
3
    25.6° 30.19 in   0% 211 miles
08:00
3
    26.1° 30.22 in UV
UV Index: 1
0% 215 miles
09:00
2
    26.8° 30.25 in UV
UV Index: 2
0% 215 miles
10:00
2
    27.7° 30.27 in UV
UV Index: 3
0% 315 miles
11:00
1
    28.6° 30.28 in UV
UV Index: 4
0% 315 miles
12:00
2
    29.0° 30.27 in UV
UV Index: 4
0% 414 miles
Move the mouse over the values for info.

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