Updated: May 28, 2017 4:25 pm
Next update: May 29, 2017 5:25 am

WXSIM Forecast for: O'Fallon

Tonight


Monday


Monday
night


Tuesday


Tuesday
night


Wednesday


Wednesday
night


Thursday


Thursday
night











6
7
6
4
5
4
5
8
8

Temperature/Precipitation/PressureThunder/Dewpoint/Pressure UV/Solar radiation Wind Max/min temperature
  Conditions Temperature Wind Precipitation UV Index Description and notes
Tonight
6
  Clear.
Monday
7
  UV
UV Index: 8
Sunny.
Monday night
6
  Clear. Moderate fog after midnight. Relatively cool.
Tuesday
4
  UV
UV Index: 8
Sunny. Moderate fog in the morning.
Tuesday night
5
  Fair in the evening, becoming clear after midnight. Patchy light fog in the evening, then moderate fog after midnight.
Wednesday
4
  UV
UV Index: 8
Sunny. Moderate fog in the morning.
Wednesday night
5
  Clear. Patchy light fog in the evening, then moderate fog after midnight.
Thursday
8
<0.1 in
PoP: 40%
UV
UV Index: 9
Partly to mostly sunny in the morning, becoming partly to mostly cloudy in the afternoon. Moderate fog in the morning. A chance of rain in the afternoon.
Scattered thunderstorms likely, some possibly severe. Precipitation less than a tenth of an inch.
Thursday night
8
<0.1 in
PoP: 30%
Partly to mostly cloudy. Patchy light fog after midnight. A chance of rain.
Scattered thunderstorms likely. Precipitation less than a tenth of an inch.
Friday
7
<0.25 in
PoP: 50%
UV
UV Index: 6
Mostly cloudy in the morning, becoming cloudy in the afternoon. Patchy light fog in the morning. A slight chance of rain in the morning, then a chance of rain in the afternoon.
Precipitation less than a quarter of an inch.
Friday night
7
<0.1 in
PoP: 30%
Mostly cloudy to cloudy in the evening, becoming mostly cloudy after midnight. Patchy light fog after midnight. A chance of rain.
Scattered thunderstorms likely. Precipitation less than a tenth of an inch.
Saturday
6
0.25 in
PoP: 60%
UV
UV Index: 8
Partly to mostly cloudy in the morning, becoming mostly cloudy in the afternoon. Light to moderate fog in the morning. Rain likely.
Scattered thunderstorms likely. Precipitation mostly around a quarter of an inch.
Saturday night
6
<0.1 in
PoP: 40%
Partly to mostly cloudy in the evening, becoming mostly cloudy after midnight. Patchy light fog in the evening, then light to moderate fog after midnight. A chance of rain in the evening, then a slight chance of rain after midnight.
Scattered thunderstorms likely. Precipitation less than a tenth of an inch.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Pressure UV Index Description and notes
 05:39     20:21    Daylength: 14:41 Today
03:00
6
  29.91 in   Clear.
06:00
6
  29.93 in UV
UV Index: 3
Sunny.
09:00
7
  29.98 in UV
UV Index: 8
Sunny.
12:00
7
  29.95 in UV
UV Index: 8
Sunny.
15:00
8
  29.92 in UV
UV Index: 4
Mostly sunny.
18:00
7
  29.94 in   Mostly sunny.
21:00
6
  30.00 in   Clear.
 05:39     20:21    Daylength: 14:42 Tomorrow
00:00
7
  30.05 in   Clear.
Moderate fog.
03:00
4
  30.07 in   Clear.
Moderate fog.
06:00
2
  30.09 in UV
UV Index: 3
Sunny.
Moderate fog.
09:00
3
  30.13 in UV
UV Index: 8
Sunny.
12:00
3
  30.10 in UV
UV Index: 8
Sunny.
15:00
6
  30.06 in UV
UV Index: 4
Mostly sunny.
18:00
7
  30.04 in   Mostly sunny.
21:00
6
  30.08 in   Clear.
Moderate fog.
 05:38     20:22    Daylength: 14:43 Wednesday 31 May
00:00
5
  30.10 in   Clear.
Moderate fog.
03:00
4
  30.08 in   Clear.
Moderate fog.
06:00
3
  30.12 in UV
UV Index: 3
Sunny.
Moderate fog.
09:00
4
  30.16 in UV
UV Index: 8
Sunny.
12:00
4
  30.13 in UV
UV Index: 8
Sunny.
15:00
5
  30.10 in UV
UV Index: 4
Sunny.
18:00
4
  30.08 in   Sunny.
21:00
4
  30.11 in   Clear.
Moderate fog.
 05:38     20:23    Daylength: 14:44 Thursday 01 Jun
00:00
5
  30.10 in   Mostly clear.
Moderate fog.
03:00
5
  30.08 in   Mostly clear.
Moderate fog.
06:00
6
  30.07 in UV
UV Index: 4
Mostly sunny.
Moderate fog.
09:00
8
  30.07 in UV
UV Index: 9
Partly cloudy.
12:00
Heat index:85F
8
0.04 in 30.00 in UV
UV Index: 9
Mostly cloudy.
Light rain showers.
15:00
Heat index:85F
9
0.06 in 29.92 in UV
UV Index: 4
Mostly cloudy.
Light rain showers.
18:00
8
0.01 in 29.90 in   Partly cloudy.
Light rain showers.
21:00
9
0.01 in 29.89 in   Partly cloudy.
Light rain showers.
 05:38     20:23    Daylength: 14:45 Friday 02 Jun
00:00
8
  29.88 in   Partly cloudy.
03:00
6
  29.88 in   Partly cloudy.
Light fog.
06:00
5
  29.89 in UV
UV Index: 3
Partly cloudy.
09:00
8
0.05 in 29.89 in UV
UV Index: 6
Partly cloudy.
Light rain showers.
12:00
9
0.11 in 29.84 in UV
UV Index: 6
Mostly cloudy.
Light rain showers.
15:00
8
0.02 in 29.80 in UV
UV Index: 3
Mostly cloudy.
Light rain showers.
18:00
7
0.01 in 29.80 in   Partly cloudy.
Light rain showers.
21:00
6
  29.82 in   Partly cloudy.
 05:37     20:24    Daylength: 14:46 Saturday 03 Jun
00:00
7
0.03 in 29.78 in   Partly cloudy.
Light rain showers.
03:00
7
  29.74 in   Partly cloudy.
06:00
5
0.03 in 29.75 in UV
UV Index: 2
Partly cloudy.
Light rain showers.
09:00
5
0.04 in 29.75 in UV
UV Index: 8
Partly cloudy.
Light rain showers.
12:00
7
0.14 in 29.71 in UV
UV Index: 8
Mostly cloudy.
Light rain showers.
15:00
7
0.05 in 29.67 in UV
UV Index: 3
Mostly cloudy.
Light rain showers.
18:00
7
0.03 in 29.67 in   Partly cloudy.
Light rain showers.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Thunderstorm probability Dewpoint Pressure UV Index Cloud cover Visibility
 05:40     20:20    Daylength: 14:40 Sunday 28 May
03:00
6
  0% 56.5° 29.91 in   0% 12 miles
04:00
6
  0% 56.1° 29.91 in   0% 12 miles
05:00
6
  0% 55.5° 29.92 in   0% 12 miles
06:00
6
  0% 56.9° 29.93 in UV
UV Index: 1
0% 12 miles
07:00
7
  0% 58.4° 29.96 in UV
UV Index: 1
0% 12 miles
08:00
7
  <20% 59.7° 29.97 in UV
UV Index: 3
0% 12 miles
09:00
7
  <20% 60.4° 29.98 in UV
UV Index: 5
0% 13 miles
10:00
7
  20-40% 60.0° 29.98 in UV
UV Index: 7
0% 13 miles
11:00
7
  20-40% 59.1° 29.97 in UV
UV Index: 8
0% 13 miles
12:00
7
  40-60% 58.5° 29.95 in UV
UV Index: 8
1% 13 miles
13:00
7
  40-60% 59.0° 29.93 in UV
UV Index: 7
2% 13 miles
14:00
8
  40-60% 60.1° 29.92 in UV
UV Index: 6
3% 13 miles
15:00
8
  40-60% 60.5° 29.92 in UV
UV Index: 4
4% 13 miles
16:00
7
  40-60% 60.2° 29.93 in UV
UV Index: 2
5% 13 miles
17:00
7
  20-40% 59.5° 29.94 in UV
UV Index: 1
6% 13 miles
18:00
7
  20-40% 58.5° 29.94 in   7% 13 miles
19:00
6
  <20% 57.7° 29.95 in   5% 13 miles
20:00
6
  0% 56.6° 29.97 in   3% 13 miles
21:00
6
  0% 55.5° 30.00 in   0% 13 miles
22:00
7
  0% 54.4° 30.02 in   0% 13 miles
23:00
7
  0% 53.4° 30.04 in   0% 12 miles
 05:39     20:21    Daylength: 14:41 Today
00:00
7
  0% 52.4° 30.05 in   0% 3.4 miles
01:00
6
  0% 51.7° 30.07 in   0% 0.4 miles
02:00
5
  0% 51.2° 30.07 in   0% 0.2 miles
03:00
4
  0% 50.9° 30.07 in   0% 0.2 miles
04:00
3
  0% 50.6° 30.07 in   0% 0.2 miles
05:00
2
  0% 50.3° 30.08 in   0% 0.4 miles
06:00
2
  0% 51.6° 30.09 in   0% 1.6 miles
07:00
1
  0% 52.8° 30.11 in UV
UV Index: 1
0% 11 miles
08:00
2
  0% 53.7° 30.13 in UV
UV Index: 3
0% 11 miles
09:00
3
  0% 53.9° 30.13 in UV
UV Index: 5
0% 11 miles
10:00
3
  0% 53.2° 30.13 in UV
UV Index: 7
0% 11 miles
11:00
3
  0% 51.9° 30.12 in UV
UV Index: 8
0% 11 miles
12:00
3
  <20% 51.2° 30.10 in UV
UV Index: 8
0% 12 miles
13:00
4
  20-40% 51.8° 30.08 in UV
UV Index: 7
0% 12 miles
14:00
5
  20-40% 53.2° 30.07 in UV
UV Index: 6
0% 12 miles
15:00
6
  20-40% 54.3° 30.06 in UV
UV Index: 4
2% 12 miles
16:00
6
  20-40% 55.0° 30.05 in UV
UV Index: 2
6% 13 miles
17:00
7
  20-40% 55.5° 30.05 in UV
UV Index: 1
10% 13 miles
18:00
7
  20-40% 55.9° 30.04 in   12% 12 miles
19:00
6
  20-40% 56.7° 30.06 in   9% 13 miles
20:00
6
  20-40% 57.2° 30.07 in   5% 13 miles
21:00
6
  <20% 57.4° 30.08 in   1% 11 miles
22:00
5
  <20% 57.6° 30.09 in   1% 2.7 miles
23:00
5
  <20% 57.7° 30.09 in   1% 1.1 miles
 05:39     20:21    Daylength: 14:42 Tomorrow
00:00
5
  <20% 57.6° 30.10 in   2% 0.6 miles
01:00
4
  <20% 57.4° 30.09 in   1% 0.4 miles
02:00
4
  <20% 57.2° 30.09 in   1% 0.3 miles
Move the mouse over the values for info.

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