Updated: September 25, 2017 5:25 am
Next update: September 25, 2017 4:25 pm

WXSIM Forecast for: O'Fallon

Today


Tonight


Tuesday


Tuesday
night


Wednesday


Wednesday
night


Thursday


Thursday
night


Friday











3
4
4
4
9
7
7
3
11

Temperature/Precipitation/PressureThunder/Dewpoint/Pressure UV/Solar radiation Wind Max/min temperature
  Conditions Temperature Wind Precipitation UV Index Description and notes
Today
3
  UV
UV Index: 6
Sunny. Patchy light fog in the morning. Unusually hot.
Heat index: 94°.
Tonight
4
  Fair in the evening, becoming clear after midnight. Light to moderate fog after midnight. Warm.
Tuesday
4
  UV
UV Index: 7
Sunny. Moderate fog in the morning. Unusually hot.
Heat index: 96°.
Tuesday night
4
  Fair to partly cloudy. Moderate fog after midnight. Warm.
Wednesday
9
  UV
UV Index: 6
Partly cloudy in the morning, becoming partly to mostly sunny in the afternoon. Moderate fog in the morning. Warm.
Wednesday night
7
  Fair in the evening, becoming mostly clear after midnight. Moderate to dense fog after midnight.
Thursday
7
  UV
UV Index: 7
Sunny. Moderate to dense fog in the morning.
Thursday night
3
  Fair to partly cloudy in the evening, becoming partly cloudy after midnight. Patchy light fog in the evening, then moderate to dense fog after midnight.
Friday
11
  UV
UV Index: 6
Partly to mostly sunny in the morning, becoming mostly sunny in the afternoon. Moderate to dense fog in the morning. Warm.
Friday night
5
  Fair in the evening, becoming fair to partly cloudy after midnight. Moderate to dense fog.
Saturday
5
  UV
UV Index: 6
Partly to mostly sunny in the morning, becoming sunny in the afternoon. Moderate fog in the morning.
Saturday night
4
  Clear. Patchy light fog in the evening, then moderate fog after midnight.
Sunday
9
  UV
UV Index: 5
Partly to mostly sunny in the morning, becoming partly cloudy in the afternoon. Moderate fog in the morning.
Sunday night
4
  Partly cloudy in the evening, becoming partly to mostly cloudy 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
 06:53     18:54    Daylength: 12:00 Today
18:00
Heat index:90F
3
  29.91 in   Mostly sunny.
21:00
4
  29.91 in   Mostly clear.
 06:54     18:52    Daylength: 11:57 Tomorrow
00:00
4
  29.92 in   Mostly clear.
Light fog.
03:00
3
  29.93 in   Clear.
Moderate fog.
06:00
2
  29.95 in UV
UV Index: 2
Clear.
Moderate fog.
09:00
4
  29.99 in UV
UV Index: 7
Sunny.
12:00
Heat index:92F
5
  29.95 in UV
UV Index: 7
Sunny.
15:00
Heat index:92F
5
  29.91 in UV
UV Index: 2
Sunny.
18:00
Heat index:91F
3
  29.94 in   Mostly sunny.
21:00
4
  29.97 in   Mostly clear.
Light fog.
 06:55     18:51    Daylength: 11:55 Wednesday 27 Sep
00:00
5
  29.99 in   Mostly clear.
Moderate fog.
03:00
6
  30.00 in   Mostly clear.
Moderate fog.
06:00
7
  30.04 in UV
UV Index: 1
Partly cloudy.
Moderate fog.
09:00
9
  30.09 in UV
UV Index: 6
Partly cloudy.
12:00
8
  30.08 in UV
UV Index: 6
Partly cloudy.
15:00
11
  30.03 in UV
UV Index: 2
Mostly sunny.
18:00
9
  30.07 in   Sunny.
21:00
8
  30.14 in   Clear.
Light fog.
 06:56     18:49    Daylength: 11:52 Thursday 28 Sep
00:00
6
  30.16 in   Clear.
Moderate fog.
03:00
6
  30.17 in   Clear.
06:00
4
  30.20 in UV
UV Index: 1
Clear.
Moderate fog.
09:00
7
  30.22 in UV
UV Index: 6
Sunny.
Light fog.
12:00
9
  30.17 in UV
UV Index: 7
Sunny.
15:00
8
  30.11 in UV
UV Index: 2
Sunny.
18:00
5
  30.13 in   Mostly sunny.
21:00
3
  30.16 in   Partly cloudy.
Light fog.
 06:57     18:48    Daylength: 11:50 Friday 29 Sep
00:00
3
  30.15 in   Partly cloudy.
Moderate fog.
03:00
4
  30.15 in   Partly cloudy.
06:00
4
  30.17 in UV
UV Index: 1
Mostly clear.
Moderate fog.
09:00
6
  30.19 in UV
UV Index: 6
Mostly sunny.
12:00
10
  30.15 in UV
UV Index: 6
Mostly sunny.
15:00
12
  30.12 in UV
UV Index: 2
Mostly sunny.
18:00
7
  30.16 in   Sunny.
Light fog.
21:00
6
  30.22 in   Mostly clear.
Moderate fog.
 06:58     18:46    Daylength: 11:47 Saturday 30 Sep
00:00
5
  30.25 in   Mostly clear.
03:00
4
  30.27 in   Mostly clear.
Moderate fog.
06:00
2
  30.31 in UV
UV Index: 1
Mostly clear.
Moderate fog.
09:00
4
  30.32 in UV
UV Index: 6
Mostly sunny.
12:00
6
  30.27 in UV
UV Index: 6
Sunny.
15:00
7
  30.20 in UV
UV Index: 2
Sunny.
18:00
4
  30.20 in   Sunny.
21:00
4
  30.22 in   Clear.
Moderate fog.
 06:59     18:44    Daylength: 11:45 Sunday 01 Oct
00:00
4
  30.22 in   Clear.
Moderate fog.
03:00
4
  30.21 in   Clear.
Moderate fog.
06:00
3
  30.22 in UV
UV Index: 1
Clear.
Moderate fog.
09:00
5
  30.21 in UV
UV Index: 5
Sunny.
Light fog.
12:00
8
  30.14 in UV
UV Index: 5
Sunny.
15:00
9
  30.05 in UV
UV Index: 2
Sunny.
18:00
6
  30.05 in   Sunny.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Thunderstorm probability Dewpoint Pressure UV Index Cloud cover Visibility
 06:53     18:54    Daylength: 12:00 Today
16:00
Heat index:90F
4
  0% 63.3° 29.90 in UV
UV Index: 1
12% 14 miles
17:00
4
  0% 62.1° 29.90 in   15% 14 miles
18:00
3
  0% 62.1° 29.91 in   17% 13 miles
19:00
3
  0% 63.2° 29.91 in   19% 13 miles
20:00
3
  0% 64.6° 29.91 in   21% 13 miles
21:00
4
  0% 65.7° 29.91 in   22% 13 miles
22:00
4
  0% 66.2° 29.92 in   18% 13 miles
23:00
4
  0% 66.4° 29.92 in   14% 13 miles
 06:54     18:52    Daylength: 11:57 Tomorrow
00:00
4
  0% 66.3° 29.92 in   10% 12 miles
01:00
4
  0% 66.1° 29.93 in   7% 5.8 miles
02:00
4
  0% 65.7° 29.93 in   4% 2.5 miles
03:00
3
  0% 65.3° 29.93 in   1% 1.3 miles
04:00
3
  0% 65.0° 29.93 in   1% 0.8 miles
05:00
3
  0% 64.6° 29.93 in   2% 0.5 miles
06:00
2
  0% 64.4° 29.95 in   2% 0.6 miles
07:00
2
  0% 65.6° 29.96 in UV
UV Index: 1
2% 2.6 miles
08:00
3
  0% 66.7° 29.98 in UV
UV Index: 2
1% 12 miles
09:00
4
  0% 67.2° 29.99 in UV
UV Index: 4
1% 12 miles
10:00
4
  0% 67.0° 29.99 in UV
UV Index: 6
1% 12 miles
11:00
Heat index:90F
4
  0% 66.2° 29.97 in UV
UV Index: 7
0% 12 miles
12:00
Heat index:92F
5
  0% 65.3° 29.95 in UV
UV Index: 7
1% 12 miles
13:00
Heat index:92F
5
  0% 64.3° 29.93 in UV
UV Index: 6
2% 13 miles
14:00
Heat index:92F
5
  0% 63.3° 29.91 in UV
UV Index: 4
3% 13 miles
15:00
Heat index:92F
5
  0% 62.4° 29.91 in UV
UV Index: 2
4% 13 miles
16:00
Heat index:91F
4
  0% 61.3° 29.92 in UV
UV Index: 1
3% 13 miles
17:00
4
  0% 60.6° 29.93 in   3% 13 miles
18:00
3
  0% 61.3° 29.94 in   4% 13 miles
19:00
3
  0% 63.1° 29.95 in   6% 12 miles
20:00
3
  0% 65.2° 29.96 in   8% 12 miles
21:00
4
  0% 66.8° 29.97 in   13% 12 miles
22:00
4
  0% 67.5° 29.97 in   17% 12 miles
23:00
4
  0% 67.7° 29.98 in   22% 1.7 miles
 06:55     18:51    Daylength: 11:55 Wednesday 27 Sep
00:00
5
  0% 67.4° 29.99 in   24% 0.4 miles
01:00
5
  0% 67.1° 30.00 in   11% 0.3 miles
02:00
5
  0% 66.7° 30.00 in   11% 0.3 miles
03:00
6
  0% 66.2° 30.00 in   11% 0.3 miles
04:00
6
  0% 65.7° 30.01 in   14% 0.4 miles
05:00
6
  0% 65.2° 30.02 in   17% 0.5 miles
06:00
7
  0% 65.0° 30.04 in   21% 0.4 miles
07:00
7
  0% 65.7° 30.06 in   26% 0.4 miles
08:00
8
  0% 65.6° 30.08 in UV
UV Index: 1
31% 1.5 miles
09:00
9
  0% 65.0° 30.09 in UV
UV Index: 3
35% 14 miles
10:00
9
  0% 64.9° 30.10 in UV
UV Index: 5
36% 14 miles
11:00
9
  0% 64.7° 30.09 in UV
UV Index: 6
37% 14 miles
12:00
8
  0% 64.2° 30.08 in UV
UV Index: 6
38% 14 miles
13:00
9
  0% 63.6° 30.06 in UV
UV Index: 5
29% 15 miles
14:00
10
  0% 62.8° 30.04 in UV
UV Index: 4
18% 15 miles
15:00
11
  0% 61.1° 30.03 in UV
UV Index: 2
7% 15 miles
Move the mouse over the values for info.

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