Updated: September 21, 2018 5:25 am
Next update: September 21, 2018 4:25 pm

WXSIM Forecast for: O'Fallon

Today


Tonight


Saturday


Saturday
night


Sunday


Sunday
night


Monday


Monday
night


40% Tuesday











9
8
7
4
6
4
6
3
7

Temperature/Precipitation/PressureThunder/Dewpoint/Pressure UV/Solar radiation Wind Max/min temperature
  Conditions Temperature Wind Precipitation UV Index Description and notes
Today
9
  UV
UV Index: 7
Mostly cloudy in the morning, becoming partly cloudy in the afternoon. Warm.
Tonight
8
  Partly to mostly cloudy. Patchy light fog in the evening, then moderate fog after midnight.
Saturday
7
  UV
UV Index: 6
Partly to mostly cloudy in the morning, becoming partly to mostly sunny in the afternoon. Moderate fog in the morning.
Saturday night
4
  Clear. Light to moderate fog in the evening, then moderate to dense fog after midnight.
Sunday
6
  UV
UV Index: 6
Sunny. Moderate to dense fog in the morning. Warm.
Sunday night
4
  Fair in the evening, becoming fair to partly cloudy after midnight.
Monday
6
  UV
UV Index: 4
Partly to mostly cloudy. Warm.
Monday night
3
  Clear in the evening, becoming fair after midnight.
Tuesday
7
0.1 in
PoP: 40%
UV
UV Index: 6
Partly cloudy in the morning, becoming partly to mostly cloudy in the afternoon. A slight chance of rain in the morning, then a chance of rain in the afternoon. Warm. Precipitation mostly around a tenth of an inch.
Tuesday night
7
  Mostly cloudy to cloudy in the evening, becoming partly cloudy after midnight.
Wednesday
6
  UV
UV Index: 6
Partly cloudy. Warm.
Wednesday night
4
  Partly cloudy in the evening, becoming clear after midnight. Light to moderate fog in the evening, then moderate fog after midnight.
Thursday
9
  UV
UV Index: 5
Mostly sunny in the morning, becoming mostly cloudy to cloudy in the afternoon. Moderate fog in the morning. Warm.
Thursday night
8
  Cloudy in the evening, becoming partly cloudy after midnight. Light to moderate fog after midnight.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Pressure UV Index Description and notes
 06:50     19:01    Daylength: 12:11 Today
15:00
9
  30.05 in UV
UV Index: 2
Mostly sunny.
18:00
9
  30.13 in   Mostly sunny.
21:00
8
  30.19 in   Mostly clear.
Moderate fog.
 06:51     18:59    Daylength: 12:08 Tomorrow
00:00
8
  30.23 in   Mostly clear.
Moderate fog.
03:00
7
  30.23 in   Mostly clear.
Moderate fog.
06:00
7
  30.23 in UV
UV Index: 1
Mostly clear.
Moderate fog.
09:00
7
  30.26 in UV
UV Index: 6
Mostly cloudy.
Moderate fog.
12:00
8
  30.21 in UV
UV Index: 6
Mostly cloudy.
15:00
7
  30.14 in UV
UV Index: 3
Sunny.
18:00
5
  30.14 in   Sunny.
21:00
4
  30.15 in   Clear.
Moderate fog.
 06:51     18:57    Daylength: 12:06 Sunday 23 Sep
00:00
4
  30.15 in   Clear.
03:00
4
  30.14 in   Clear.
06:00
4
  30.14 in UV
UV Index: 1
Clear.
Moderate fog.
09:00
5
  30.16 in UV
UV Index: 6
Sunny.
Light fog.
12:00
6
  30.12 in UV
UV Index: 6
Sunny.
15:00
7
  30.04 in UV
UV Index: 2
Sunny.
18:00
5
  30.03 in   Mostly sunny.
21:00
5
  30.07 in   Partly cloudy.
 06:52     18:56    Daylength: 12:03 Monday 24 Sep
00:00
4
  30.05 in   Partly cloudy.
03:00
3
  30.02 in   Partly cloudy.
06:00
4
  30.02 in UV
UV Index: 2
Mostly cloudy.
09:00
6
  30.02 in UV
UV Index: 4
Mostly cloudy.
12:00
6
0.01 in 29.97 in UV
UV Index: 4
Mostly cloudy.
Light rain showers.
15:00
Heat index:86F
6
  29.90 in UV
UV Index: 2
Partly cloudy.
18:00
3
  29.90 in   Mostly sunny.
21:00
3
  29.92 in   Mostly clear.
 06:53     18:54    Daylength: 12:01 Tuesday 25 Sep
00:00
4
  29.91 in   Mostly clear.
03:00
3
  29.90 in   Partly cloudy.
06:00
2
  29.94 in UV
UV Index: 2
Mostly cloudy.
09:00
3
  29.97 in UV
UV Index: 6
Mostly cloudy.
12:00
Heat index:87F
4
0.09 in 29.95 in UV
UV Index: 6
Partly cloudy.
Light rain showers.
15:00
9
0.03 in 29.93 in UV
UV Index: 2
Partly cloudy.
Light rain showers.
18:00
8
  29.98 in   Partly cloudy.
21:00
7
  30.05 in   Mostly clear.
 06:54     18:53    Daylength: 11:58 Wednesday 26 Sep
00:00
7
  30.05 in   Clear.
03:00
6
  30.07 in   Clear.
06:00
4
  30.10 in UV
UV Index: 2
Clear.
09:00
6
  30.11 in UV
UV Index: 6
Sunny.
12:00
7
  30.06 in UV
UV Index: 6
Sunny.
15:00
6
  30.00 in UV
UV Index: 2
Mostly sunny.
18:00
5
  29.99 in   Mostly sunny.
21:00
4
  30.00 in   Clear.
Moderate fog.
 06:55     18:51    Daylength: 11:56 Thursday 27 Sep
00:00
4
  29.96 in   Clear.
Moderate fog.
03:00
4
  29.93 in   Clear.
06:00
4
  29.93 in UV
UV Index: 1
Mostly clear.
Moderate fog.
09:00
5
  29.93 in UV
UV Index: 5
Mostly cloudy.
Moderate fog.
12:00
8
0.02 in 29.91 in UV
UV Index: 4
Mostly cloudy.
Light rain showers.
15:00
10
  29.91 in UV
UV Index: 1
Cloudy.
18:00
11
0.01 in 30.00 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
 06:50     19:01    Daylength: 12:11 Today
13:00
Heat index:87F
10
  0% 64.9° 30.03 in UV
UV Index: 6
10% 1015 miles
14:00
10
  0% 63.3° 30.04 in UV
UV Index: 4
13% 915 miles
15:00
9
  0% 61.8° 30.05 in UV
UV Index: 2
16% 815 miles
16:00
9
  0% 59.9° 30.08 in UV
UV Index: 1
17% 715 miles
17:00
9
  0% 58.0° 30.10 in   18% 515 miles
18:00
9
  0% 56.9° 30.13 in   19% 515 miles
19:00
9
  0% 56.7° 30.15 in   15% 413 miles
20:00
9
  0% 56.6° 30.17 in   10% 407 miles
21:00
8
  0% 56.4° 30.19 in   8% 403 miles
22:00
8
  0% 56.2° 30.21 in   12% 402 miles
23:00
8
  0% 55.9° 30.22 in   16% 301 miles
 06:51     18:59    Daylength: 12:08 Tomorrow
00:00
8
  0% 55.4° 30.23 in   18% 301 miles
01:00
8
  0% 54.8° 30.23 in   16% 301 miles
02:00
8
  0% 54.2° 30.23 in   14% 301 miles
03:00
7
  0% 53.6° 30.23 in   11% 300 miles
04:00
7
  0% 52.8° 30.22 in   8% 300 miles
05:00
7
  0% 51.9° 30.22 in   5% 300 miles
06:00
7
  0% 51.3° 30.23 in   3% 300 miles
07:00
7
  0% 51.6° 30.24 in UV
UV Index: 1
4% 301 miles
08:00
7
  0% 51.8° 30.25 in UV
UV Index: 1
6% 301 miles
09:00
7
  0% 52.3° 30.26 in UV
UV Index: 3
16% 304 miles
10:00
8
  0% 53.0° 30.25 in UV
UV Index: 5
36% 414 miles
11:00
8
  0% 54.1° 30.23 in UV
UV Index: 6
55% 614 miles
12:00
8
  0% 54.8° 30.21 in UV
UV Index: 6
65% 715 miles
13:00
8
  0% 54.9° 30.18 in UV
UV Index: 6
47% 815 miles
14:00
8
  0% 54.9° 30.15 in UV
UV Index: 5
25% 815 miles
15:00
7
  0% 54.9° 30.14 in UV
UV Index: 3
3% 815 miles
16:00
7
  0% 54.6° 30.14 in UV
UV Index: 1
1% 715 miles
17:00
6
  0% 54.3° 30.14 in   0% 515 miles
18:00
5
  0% 54.6° 30.14 in   0% 414 miles
19:00
4
  0% 55.7° 30.14 in   0% 414 miles
20:00
4
  0% 56.6° 30.14 in   0% 308 miles
21:00
4
  0% 57.1° 30.15 in   0% 302 miles
22:00
4
  0% 56.9° 30.15 in   0% 301 miles
23:00
4
  0% 56.4° 30.15 in   0% 300 miles
 06:51     18:57    Daylength: 12:06 Sunday 23 Sep
00:00
4
  0% 55.9° 30.15 in   0% 300 miles
01:00
4
  0% 55.3° 30.15 in   0% 300 miles
02:00
4
  0% 54.6° 30.14 in   0% 300 miles
03:00
4
  0% 54.0° 30.14 in   0% 300 miles
04:00
4
  0% 53.2° 30.13 in   0% 300 miles
05:00
4
  0% 52.3° 30.13 in   0% 300 miles
06:00
4
  0% 51.7° 30.14 in   0% 300 miles
07:00
4
  0% 52.4° 30.15 in   0% 300 miles
08:00
4
  0% 53.5° 30.16 in UV
UV Index: 1
0% 302 miles
09:00
5
  0% 54.9° 30.16 in UV
UV Index: 4
0% 414 miles
10:00
6
  0% 55.7° 30.16 in UV
UV Index: 5
0% 714 miles
11:00
6
  0% 56.2° 30.14 in UV
UV Index: 6
0% 814 miles
12:00
6
  0% 56.6° 30.12 in UV
UV Index: 6
0% 914 miles
Move the mouse over the values for info.

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