Updated: July 16, 2018 4:25 pm
Next update: July 17, 2018 5:25 am

WXSIM Forecast for: O'Fallon

Tonight


Tuesday


Tuesday
night


Wednesday


Wednesday
night


Thursday


Thursday
night


Friday


Friday
night











5
6
4
4
7
10
6
9
8

Temperature/Precipitation/PressureThunder/Dewpoint/Pressure UV/Solar radiation Wind Max/min temperature
  Conditions Temperature Wind Precipitation UV Index Description and notes
Tonight
5
  Fair in the evening, becoming clear after midnight. Moderate fog after midnight.
Tuesday
6
  UV
UV Index: 9
Sunny. Moderate fog in the morning.
Heat index: 95°.
Tuesday night
4
  Clear. Patchy light fog in the evening, then moderate fog after midnight.
Wednesday
4
  UV
UV Index: 8
Partly to mostly sunny in the morning, becoming partly to mostly cloudy in the afternoon. Moderate fog in the morning.
Heat index: 94°.
Wednesday night
7
<0.1 in
PoP: 30%
Partly to mostly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. A chance of rain after midnight. Precipitation less than a tenth of an inch.
Thursday
10
  UV
UV Index: 9
Partly cloudy in the morning, becoming sunny in the afternoon.
Heat index: 95°.
Thursday night
6
  Clear in the evening, becoming fair to partly cloudy after midnight.
Friday
9
  UV
UV Index: 9
Partly to mostly sunny in the morning, becoming sunny in the afternoon. Very hot.
Heat index: 107°.
Friday night
8
  Clear. Patchy light fog in the evening, then moderate to dense fog after midnight.
Saturday
12
  UV
UV Index: 8
Partly to mostly sunny in the morning, becoming mostly sunny in the afternoon. Moderate to dense fog in the morning.
Saturday night
8
  Clear. Light to moderate fog in the evening, then moderate to dense fog after midnight.
Sunday
10
  UV
UV Index: 10
Sunny. Moderate to dense fog in the morning.
Heat index: 91°.
Sunday night
4
  Clear. Patchy light fog in the evening, then moderate fog after midnight. Relatively cool.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Pressure UV Index Description and notes
 05:51     20:27    Daylength: 14:36 Monday 16 Jul
06:00
4
  30.03 in UV
UV Index: 4
Sunny.
Moderate fog.
09:00
5
  30.09 in UV
UV Index: 9
Sunny.
12:00
Heat index:90F
7
  30.07 in UV
UV Index: 9
Sunny.
15:00
Heat index:91F
7
  30.03 in UV
UV Index: 5
Sunny.
18:00
Heat index:91F
5
  30.05 in   Sunny.
21:00
3
  30.06 in   Clear.
Light fog.
 05:51     20:26    Daylength: 14:34 Today
00:00
4
  30.07 in   Clear.
Moderate fog.
03:00
3
  30.06 in   Clear.
Moderate fog.
06:00
2
  30.08 in UV
UV Index: 3
Partly cloudy.
Moderate fog.
09:00
4
  30.11 in UV
UV Index: 8
Partly cloudy.
12:00
Heat index:90F
5
  30.07 in UV
UV Index: 8
Mostly cloudy.
15:00
Heat index:91F
5
  30.00 in UV
UV Index: 4
Mostly cloudy.
18:00
Heat index:91F
8
  29.96 in   Mostly cloudy.
21:00
7
  29.99 in   Partly cloudy.
 05:52     20:25    Daylength: 14:33 Tomorrow
00:00
7
0.05 in 29.97 in   Mostly cloudy.
Light rain showers.
03:00
7
  29.95 in   Partly cloudy.
06:00
7
  29.92 in UV
UV Index: 3
Mostly sunny.
09:00
11
  29.90 in UV
UV Index: 9
Mostly sunny.
12:00
12
  29.86 in UV
UV Index: 9
Mostly sunny.
15:00
Heat index:94F
10
  29.78 in UV
UV Index: 5
Sunny.
18:00
Heat index:94F
7
  29.75 in   Sunny.
21:00
6
  29.77 in   Clear.
 05:53     20:25    Daylength: 14:31 Thursday 19 Jul
00:00
6
  29.77 in   Clear.
03:00
6
  29.76 in   Clear.
06:00
3
  29.76 in UV
UV Index: 3
Sunny.
09:00
Heat index:93F
9
  29.75 in UV
UV Index: 9
Sunny.
12:00
Heat index:104F
7
  29.71 in UV
UV Index: 9
Sunny.
15:00
Heat index:105F
11
  29.67 in UV
UV Index: 5
Mostly sunny.
18:00
Heat index:100F
10
  29.70 in   Mostly sunny.
21:00
8
  29.79 in   Clear.
Moderate fog.
 05:54     20:24    Daylength: 14:30 Friday 20 Jul
00:00
6
  29.81 in   Clear.
03:00
8
  29.82 in   Clear.
06:00
8
  29.86 in UV
UV Index: 2
Partly cloudy.
Moderate fog.
09:00
9
  29.87 in UV
UV Index: 8
Partly cloudy.
Moderate fog.
12:00
12
  29.86 in UV
UV Index: 8
Partly cloudy.
15:00
13
  29.85 in UV
UV Index: 5
Sunny.
18:00
9
  29.87 in   Sunny.
21:00
6
  29.91 in   Clear.
Moderate fog.
 05:55     20:23    Daylength: 14:28 Saturday 21 Jul
00:00
8
  29.90 in   Mostly clear.
Moderate fog.
03:00
8
  29.90 in   Mostly clear.
06:00
7
  29.93 in UV
UV Index: 3
Sunny.
Moderate fog.
09:00
9
  29.95 in UV
UV Index: 9
Sunny.
Light fog.
12:00
11
  29.93 in UV
UV Index: 10
Sunny.
15:00
11
  29.90 in UV
UV Index: 5
Sunny.
18:00
7
  29.92 in   Sunny.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Thunderstorm probability Dewpoint Pressure UV Index Cloud cover Visibility
 05:51     20:27    Daylength: 14:36 Monday 16 Jul
05:00
4
  0% 65.8° 30.01 in   0% 0.2 miles
06:00
4
  0% 65.9° 30.03 in   0% 0.3 miles
07:00
4
  0% 66.1° 30.06 in UV
UV Index: 1
0% 1.0 miles
08:00
4
  0% 65.9° 30.08 in UV
UV Index: 4
0% 11 miles
09:00
5
  0% 66.0° 30.09 in UV
UV Index: 6
0% 11 miles
10:00
Heat index:85F
6
  0% 65.7° 30.09 in UV
UV Index: 8
0% 11 miles
11:00
Heat index:88F
6
  0% 65.2° 30.09 in UV
UV Index: 9
0% 11 miles
12:00
Heat index:90F
7
  0% 64.6° 30.07 in UV
UV Index: 9
0% 12 miles
13:00
Heat index:91F
7
  0% 64.2° 30.05 in UV
UV Index: 9
0% 12 miles
14:00
Heat index:91F
7
  0% 63.8° 30.03 in UV
UV Index: 7
0% 12 miles
15:00
Heat index:91F
7
  0% 63.8° 30.03 in UV
UV Index: 5
1% 12 miles
16:00
Heat index:91F
6
  0% 63.9° 30.04 in UV
UV Index: 3
1% 13 miles
17:00
Heat index:90F
6
  0% 63.9° 30.04 in UV
UV Index: 1
2% 13 miles
18:00
5
  0% 64.9° 30.05 in   3% 12 miles
19:00
4
  0% 66.0° 30.05 in   2% 12 miles
20:00
4
  0% 66.9° 30.06 in   1% 12 miles
21:00
3
  0% 67.5° 30.06 in   0% 9.2 miles
22:00
3
  0% 67.9° 30.07 in   0% 3.6 miles
23:00
3
  0% 68.1° 30.07 in   0% 1.5 miles
 05:51     20:26    Daylength: 14:34 Today
00:00
4
  0% 68.1° 30.07 in   0% 0.8 miles
01:00
4
  0% 67.9° 30.07 in   0% 0.5 miles
02:00
4
  0% 67.5° 30.07 in   0% 0.4 miles
03:00
3
  0% 66.9° 30.06 in   0% 0.3 miles
04:00
3
  0% 66.4° 30.06 in   0% 0.3 miles
05:00
2
  0% 66.2° 30.07 in   0% 0.4 miles
06:00
2
  0% 66.6° 30.08 in   5% 0.9 miles
07:00
2
  0% 67.0° 30.10 in UV
UV Index: 1
18% 4.2 miles
08:00
3
  0% 67.2° 30.11 in UV
UV Index: 3
30% 10 miles
09:00
4
  0% 67.3° 30.11 in UV
UV Index: 5
39% 10 miles
10:00
4
  0% 67.1° 30.10 in UV
UV Index: 7
42% 11 miles
11:00
5
  0% 66.7° 30.09 in UV
UV Index: 8
46% 11 miles
12:00
Heat index:90F
5
  0% 66.1° 30.07 in UV
UV Index: 8
52% 11 miles
13:00
Heat index:91F
5
  0% 65.7° 30.04 in UV
UV Index: 7
60% 12 miles
14:00
Heat index:91F
5
  0% 65.3° 30.02 in UV
UV Index: 6
67% 12 miles
15:00
Heat index:91F
5
  0% 65.1° 30.00 in UV
UV Index: 4
73% 12 miles
16:00
Heat index:91F
6
  0% 64.9° 29.98 in UV
UV Index: 2
77% 12 miles
17:00
7
  0% 64.5° 29.97 in UV
UV Index: 1
82% 13 miles
18:00
8
  0% 65.3° 29.96 in   84% 13 miles
19:00
7
  0% 66.3° 29.97 in   64% 13 miles
20:00
7
  0% 67.0° 29.98 in   43% 13 miles
21:00
7
  0% 67.4° 29.99 in   28% 13 miles
22:00
7
  0% 67.2° 29.99 in   39% 12 miles
23:00
7
  0% 66.5° 29.98 in   49% 12 miles
 05:52     20:25    Daylength: 14:33 Tomorrow
00:00
7
0.01 in 0% 66.1° 29.97 in   54% 10 miles
01:00
7
0.02 in 0% 65.9° 29.96 in   53% 10 miles
02:00
7
0.02 in 0% 65.8° 29.96 in   52% 10 miles
03:00
7
  0% 65.8° 29.95 in   50% 12 miles
04:00
7
  0% 65.9° 29.93 in   41% 12 miles
Move the mouse over the values for info.

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