Updated: September 20, 2018 4:25 pm
Next update: September 21, 2018 5:25 am

WXSIM Forecast for: O'Fallon

Tonight


 Friday


 Friday
night

 Saturday


 Saturday
night

 Sunday


 Sunday
night

 Monday


 Monday
night









9
9
8
6
4
5
5
6
5

Temperature/Precipitation/PressureThunder/Dewpoint/Pressure UV/Solar radiation Wind Max/min temperature
  Conditions Temperature Wind Precipitation UV Index Description and notes
Tonight
9
   Mostly clear in the evening, becoming partly to mostly cloudy after midnight. Unusually warm.
Friday
9
   UV
UV Index: 7		 Mostly cloudy in the morning, becoming partly cloudy in the afternoon. Warm.
Friday night
8
   Mostly cloudy in the evening, becoming partly to mostly cloudy after midnight. Patchy light fog in the evening, then moderate fog after midnight.
Saturday
6
   UV
UV Index: 8		 Partly to mostly cloudy 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 to dense fog after midnight.
Sunday
5
   UV
UV Index: 7		 Sunny. Moderate to dense fog in the morning. Warm.
Sunday night
5
   Mostly clear. Patchy light fog after midnight.
Monday
6
   UV
UV Index: 5		 Mostly sunny in the morning, becoming partly to mostly cloudy in the afternoon. Patchy light fog in the morning. Warm.
Monday night
5
   Mostly clear in the evening, becoming partly cloudy after midnight. Light to moderate fog after midnight. Warm.
Tuesday
7
 <0.1 in
PoP: 30%		 Partly cloudy in the morning, becoming cloudy in the afternoon. Moderate fog in the morning. A slight chance of rain in the morning, then a chance of rain in the afternoon. Precipitation less than a tenth of an inch.
Tuesday night
9
   Partly to mostly cloudy in the evening, becoming clear after midnight. Light to moderate fog in the evening, then moderate to dense fog after midnight.
Wednesday
3
   UV
UV Index: 6		 Sunny. Moderate to dense fog in the morning.
Wednesday night
5
   Clear. Moderate fog in the evening, then moderate to dense 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
03:00
9
 0.03 in 29.89 in   Partly cloudy.
Light rain showers.
06:00
8
   29.92 in UV
UV Index: 2		 Mostly clear.
09:00
9
   29.99 in UV
UV Index: 7		 Mostly sunny.
12:00
Heat index:86°F
9
   30.00 in UV
UV Index: 7		 Mostly sunny.
15:00
9
   30.02 in UV
UV Index: 2		 Sunny.
18:00
8
   30.10 in   Sunny.
21:00
8
   30.17 in   Mostly clear.
Light fog.
 06:51     18:59    Daylength: 12:08 Tomorrow
00:00
8
   30.21 in   Clear.
Moderate fog.
03:00
7
   30.21 in   Clear.
Moderate fog.
06:00
7
   30.21 in UV
UV Index: 1		 Partly cloudy.
Moderate fog.
09:00
6
   30.24 in UV
UV Index: 7		 Mostly cloudy.
Moderate fog.
12:00
7
   30.19 in UV
UV Index: 8		 Sunny.
15:00
5
   30.11 in UV
UV Index: 3		 Sunny.
18:00
4
   30.11 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.
Moderate fog.
03:00
4
   30.14 in   Clear.
Moderate fog.
06:00
4
   30.15 in UV
UV Index: 1		 Clear.
Moderate fog.
09:00
5
   30.17 in UV
UV Index: 7		 Sunny.
Light fog.
12:00
5
   30.12 in UV
UV Index: 7		 Sunny.
15:00
5
   30.05 in UV
UV Index: 3		 Sunny.
18:00
5
   30.06 in   Mostly sunny.
21:00
5
   30.09 in   Partly cloudy.
 06:52     18:56    Daylength: 12:03 Monday 24 Sep
00:00
5
   30.07 in   Mostly clear.
Light fog.
03:00
4
   30.06 in   Mostly clear.
Light fog.
06:00
4
   30.07 in UV
UV Index: 2		 Mostly clear.
Light fog.
09:00
6
   30.08 in UV
UV Index: 5		 Mostly cloudy.
12:00
6
 0.01 in 30.02 in UV
UV Index: 5		 Mostly cloudy.
Light rain showers.
15:00
6
   29.95 in UV
UV Index: 2		 Mostly cloudy.
18:00
5
   29.95 in   Mostly sunny.
21:00
4
   29.98 in   Mostly clear.
 06:53     18:54    Daylength: 12:01 Tuesday 25 Sep
00:00
5
   29.95 in   Partly cloudy.
03:00
6
   29.92 in   Mostly cloudy.
Moderate fog.
06:00
6
   29.94 in UV
UV Index: 2		 Partly cloudy.
Moderate fog.
09:00
5
 0.02 in 29.97 in UV
UV Index: 4		 Mostly cloudy.
Light rain showers.
12:00
7
 0.03 in 29.96 in UV
UV Index: 3		 Mostly cloudy.
Light rain showers.
15:00
10
 0.01 in 29.95 in UV
UV Index: 1		 Mostly cloudy.
Light rain showers.
18:00
10
   30.03 in   Mostly cloudy.
21:00
8
   30.11 in   Mostly cloudy.
Moderate fog.
 06:54     18:53    Daylength: 11:58 Wednesday 26 Sep
00:00
5
   30.13 in   Clear.
03:00
4
   30.13 in   Clear.
06:00
1
   30.16 in UV
UV Index: 1		 Clear.
Moderate fog.
09:00
2
   30.17 in UV
UV Index: 6		 Sunny.
12:00
5
   30.12 in UV
UV Index: 6		 Sunny.
15:00
5
   30.03 in UV
UV Index: 2		 Sunny.
18:00
5
   30.01 in   Sunny.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Thunderstorm probability Dewpoint Pressure UV Index Cloud cover Visibility
 06:49     19:02    Daylength: 12:13 Thursday 20 Sep
03:00
9
 0.01 in <20% 70.6° 29.89 in   36% 511 miles
04:00
8
   0% 70.7° 29.89 in   30% 410 miles
05:00
8
   0% 70.5° 29.90 in   23% 410 miles
06:00
8
   0% 70.4° 29.92 in   16% 411 miles
07:00
8
   0% 71.2° 29.95 in UV
UV Index: 1		 18% 512 miles
08:00
8
   0% 71.2° 29.97 in UV
UV Index: 2		 21% 512 miles
09:00
9
   0% 70.6° 29.99 in UV
UV Index: 4		 22% 712 miles
10:00
Heat index:85°F
9
   0% 69.7° 30.01 in UV
UV Index: 6		 20% 812 miles
11:00
Heat index:86°F
9
   0% 68.4° 30.01 in UV
UV Index: 7		 16% 912 miles
12:00
Heat index:86°F
9
   0% 66.9° 30.00 in UV
UV Index: 7		 13% 913 miles
13:00
Heat index:85°F
9
   0% 65.0° 30.00 in UV
UV Index: 6		 10% 913 miles
14:00
9
   0% 63.1° 30.01 in UV
UV Index: 4		 7% 813 miles
15:00
9
   0% 61.3° 30.02 in UV
UV Index: 2		 4% 713 miles
16:00
9
   0% 59.3° 30.05 in UV
UV Index: 1		 3% 613 miles
17:00
8
   0% 57.4° 30.08 in   2% 513 miles
18:00
8
   0% 56.3° 30.10 in   1% 413 miles
19:00
7
   0% 56.2° 30.13 in   1% 410 miles
20:00
8
   0% 56.3° 30.15 in   1% 409 miles
21:00
8
   0% 56.2° 30.17 in   7% 408 miles
22:00
9
   0% 55.7° 30.19 in   3% 405 miles
23:00
9
   0% 55.1° 30.20 in   4% 402 miles
 06:50     19:01    Daylength: 12:11 Today
00:00
8
   0% 54.4° 30.21 in   4% 301 miles
01:00
8
   0% 53.8° 30.22 in   3% 301 miles
02:00
8
   0% 53.3° 30.22 in   2% 301 miles
03:00
7
   0% 52.8° 30.21 in   0% 300 miles
04:00
7
   0% 52.1° 30.21 in   0% 300 miles
05:00
7
   0% 51.5° 30.21 in   0% 300 miles
06:00
7
   0% 51.0° 30.21 in   9% 300 miles
07:00
6
   0% 51.6° 30.23 in UV
UV Index: 1		 29% 300 miles
08:00
6
   0% 52.2° 30.24 in UV
UV Index: 1		 50% 301 miles
09:00
6
   0% 52.7° 30.24 in UV
UV Index: 3		 60% 303 miles
10:00
6
   0% 53.1° 30.23 in UV
UV Index: 6		 43% 412 miles
11:00
7
   0% 53.4° 30.22 in UV
UV Index: 7		 24% 612 miles
12:00
7
   0% 53.5° 30.19 in UV
UV Index: 8		 2% 712 miles
13:00
6
   0% 53.5° 30.15 in UV
UV Index: 7		 2% 812 miles
14:00
6
   0% 53.5° 30.13 in UV
UV Index: 5		 1% 812 miles
15:00
5
   0% 53.7° 30.11 in UV
UV Index: 3		 0% 713 miles
16:00
5
   0% 53.5° 30.11 in UV
UV Index: 1		 0% 613 miles
17:00
5
   0% 53.4° 30.11 in   0% 512 miles
18:00
4
   0% 53.8° 30.11 in   0% 412 miles
19:00
4
   0% 54.9° 30.13 in   0% 412 miles
20:00
4
   0% 56.0° 30.14 in   0% 312 miles
21:00
4
   0% 56.5° 30.15 in   0% 308 miles
22:00
4
   0% 56.6° 30.15 in   0% 303 miles
23:00
4
   0% 56.4° 30.15 in   0% 301 miles
 06:51     18:59    Daylength: 12:08 Tomorrow
00:00
4
   0% 56.1° 30.15 in   0% 301 miles
01:00
4
   0% 55.8° 30.15 in   0% 300 miles
02:00
4
   0% 55.4° 30.15 in   0% 300 miles
Move the mouse over the values for info.

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