Updated: June 22, 2017 5:25 am
Next update: June 22, 2017 4:25 pm

WXSIM Forecast for: O'Fallon

Today


Tonight


Friday


Friday
night


Saturday


Saturday
night


Sunday


Sunday
night


Monday











12
7
12
8
9
5
10
6
9

Temperature/Precipitation/PressureThunder/Dewpoint/Pressure UV/Solar radiation Wind Max/min temperature
  Conditions Temperature Wind Precipitation UV Index Description and notes
Today
12
  UV
UV Index: 9
Partly to mostly cloudy.
Tonight
7
  Partly to mostly cloudy in the evening, becoming fair to partly cloudy after midnight. Light to moderate fog after midnight.
Friday
12
<0.1 in
PoP: 30%
UV
UV Index: 9
Partly cloudy. Light to moderate fog in the morning. A chance of rain.
Scattered thundershowers possible. Precipitation less than a tenth of an inch.
Friday night
8
  Fair to partly cloudy in the evening, becoming mostly clear after midnight. Relatively cool.
Saturday
9
  UV
UV Index: 9
Sunny.
Saturday night
5
  Clear. Moderate to dense fog after midnight. Unusually cool.
Sunday
10
  UV
UV Index: 10
Sunny. Moderate to dense fog in the morning.
Sunday night
6
  Partly to mostly cloudy in the evening, becoming mostly cloudy after midnight. Patchy light fog after midnight. Relatively cool.
Monday
9
  UV
UV Index: 9
Mostly sunny in the morning, becoming sunny in the afternoon. Patchy light fog in the morning.
Monday night
4
  Clear. Patchy light fog in the evening, then moderate to dense fog after midnight. Unusually cool.
Tuesday
9
  UV
UV Index: 8
Sunny. Moderate to dense fog in the morning.
Tuesday night
9
  Clear. Relatively cool.
Wednesday
16
  UV
UV Index: 10
Mostly sunny in the morning, becoming partly to mostly sunny in the afternoon. Breezy and hot.
Wednesday night
10
  Mostly clear in the evening, becoming clear after midnight. Breezy.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Pressure UV Index Description and notes
 05:37     20:32    Daylength: 14:54 Today
12:00
Heat index:92F
12
  29.81 in UV
UV Index: 9
Mostly cloudy.
15:00
Heat index:92F
12
  29.76 in UV
UV Index: 4
Mostly cloudy.
18:00
Heat index:89F
9
  29.75 in   Mostly cloudy.
21:00
7
  29.73 in   Partly cloudy.
 05:38     20:32    Daylength: 14:54 Tomorrow
00:00
6
  29.71 in   Partly cloudy.
Moderate fog.
03:00
6
  29.71 in   Mostly clear.
Moderate fog.
06:00
6
0.02 in 29.72 in UV
UV Index: 3
Mostly cloudy.
Light rain showers.
Light fog.
09:00
8
0.03 in 29.76 in UV
UV Index: 8
Mostly cloudy.
Light rain showers.
12:00
11
  29.77 in UV
UV Index: 9
Partly cloudy.
15:00
Heat index:87F
12
  29.78 in UV
UV Index: 4
Mostly sunny.
18:00
10
  29.83 in   Mostly sunny.
21:00
9
  29.89 in   Mostly clear.
 05:38     20:32    Daylength: 14:54 Saturday 24 Jun
00:00
9
  29.95 in   Mostly clear.
03:00
6
  30.02 in   Clear.
06:00
6
  30.08 in UV
UV Index: 4
Sunny.
09:00
9
  30.13 in UV
UV Index: 9
Sunny.
12:00
10
  30.14 in UV
UV Index: 9
Sunny.
15:00
9
  30.09 in UV
UV Index: 5
Sunny.
18:00
6
  30.09 in   Sunny.
21:00
6
  30.15 in   Clear.
 05:38     20:32    Daylength: 14:53 Sunday 25 Jun
00:00
5
  30.18 in   Clear.
Moderate fog.
03:00
5
  30.19 in   Clear.
Moderate fog.
06:00
4
  30.23 in UV
UV Index: 4
Sunny.
Moderate fog.
09:00
8
  30.26 in UV
UV Index: 10
Sunny.
12:00
10
  30.24 in UV
UV Index: 10
Sunny.
15:00
10
  30.20 in UV
UV Index: 5
Sunny.
18:00
7
  30.20 in   Mostly sunny.
21:00
6
  30.23 in   Partly cloudy.
 05:39     20:32    Daylength: 14:53 Monday 26 Jun
00:00
7
  30.25 in   Mostly cloudy.
03:00
6
  30.25 in   Partly cloudy.
Moderate fog.
06:00
5
  30.27 in UV
UV Index: 4
Partly cloudy.
Moderate fog.
09:00
7
  30.29 in UV
UV Index: 9
Sunny.
12:00
10
  30.25 in UV
UV Index: 9
Sunny.
15:00
9
  30.21 in UV
UV Index: 5
Mostly sunny.
18:00
6
  30.21 in   Mostly sunny.
21:00
3
  30.23 in   Clear.
Moderate fog.
 05:39     20:32    Daylength: 14:53 Tuesday 27 Jun
00:00
3
  30.23 in   Clear.
Moderate fog.
03:00
4
  30.22 in   Clear.
06:00
3
  30.23 in UV
UV Index: 3
Sunny.
Moderate fog.
09:00
4
  30.23 in UV
UV Index: 8
Sunny.
12:00
7
  30.18 in UV
UV Index: 8
Sunny.
15:00
10
  30.11 in UV
UV Index: 4
Sunny.
18:00
9
  30.08 in   Sunny.
21:00
10
  30.09 in   Clear.
 05:40     20:32    Daylength: 14:52 Wednesday 28 Jun
00:00
9
  30.09 in   Clear.
03:00
8
  30.08 in   Mostly clear.
06:00
9
  30.10 in UV
UV Index: 4
Sunny.
09:00
14
  30.07 in UV
UV Index: 10
Sunny.
12:00
16
  30.02 in UV
UV Index: 10
Sunny.
15:00
17
  29.94 in UV
UV Index: 5
Sunny.
18:00
14
  29.91 in   Sunny.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Thunderstorm probability Dewpoint Pressure UV Index Cloud cover Visibility
 05:37     20:32    Daylength: 14:54 Today
12:00
Heat index:92F
12
  <20% 71.1° 29.81 in UV
UV Index: 9
41% 13 miles
13:00
Heat index:92F
13
  <20% 70.9° 29.78 in UV
UV Index: 8
47% 14 miles
14:00
Heat index:91F
12
  <20% 70.6° 29.76 in UV
UV Index: 6
54% 14 miles
15:00
Heat index:91F
12
  <20% 69.7° 29.76 in UV
UV Index: 4
59% 14 miles
16:00
Heat index:89F
11
  <20% 68.7° 29.76 in UV
UV Index: 2
62% 14 miles
17:00
Heat index:88F
10
  <20% 67.9° 29.76 in UV
UV Index: 1
65% 14 miles
18:00
9
  <20% 68.0° 29.75 in   66% 13 miles
19:00
8
  <20% 69.5° 29.74 in   60% 13 miles
20:00
8
  <20% 71.1° 29.73 in   52% 13 miles
21:00
7
  <20% 72.1° 29.73 in   44% 12 miles
22:00
7
  <20% 72.3° 29.72 in   40% 11 miles
23:00
6
  <20% 72.2° 29.71 in   37% 7.2 miles
 05:38     20:32    Daylength: 14:54 Tomorrow
00:00
6
  <20% 72.0° 29.71 in   33% 4.6 miles
01:00
6
  <20% 71.9° 29.71 in   29% 1.8 miles
02:00
6
  <20% 71.7° 29.71 in   25% 0.7 miles
03:00
6
  <20% 71.7° 29.71 in   20% 0.7 miles
04:00
6
  <20% 71.4° 29.71 in   19% 0.6 miles
05:00
6
  <20% 71.2° 29.71 in   18% 1.3 miles
06:00
6
  <20% 71.7° 29.72 in UV
UV Index: 1
22% 5.9 miles
07:00
7
0.01 in <20% 72.3° 29.73 in UV
UV Index: 2
45% 9.7 miles
08:00
7
0.01 in 20-40% 72.6° 29.75 in UV
UV Index: 3
59% 9.9 miles
09:00
8
0.01 in 20-40% 71.9° 29.76 in UV
UV Index: 5
64% 10 miles
10:00
9
0.01 in 20-40% 70.2° 29.76 in UV
UV Index: 7
56% 10 miles
11:00
10
0.01 in <20% 67.8° 29.77 in UV
UV Index: 8
46% 11 miles
12:00
11
  <20% 65.8° 29.77 in UV
UV Index: 9
35% 13 miles
13:00
Heat index:87F
12
  <20% 64.5° 29.76 in UV
UV Index: 9
12% 13 miles
14:00
Heat index:87F
12
  <20% 63.8° 29.77 in UV
UV Index: 7
8% 14 miles
15:00
12
  <20% 62.5° 29.78 in UV
UV Index: 4
4% 14 miles
16:00
11
  0% 60.9° 29.80 in UV
UV Index: 3
6% 14 miles
17:00
11
  0% 59.6° 29.82 in UV
UV Index: 1
8% 14 miles
18:00
10
  0% 59.0° 29.83 in   9% 14 miles
19:00
9
  0% 59.3° 29.85 in   7% 14 miles
20:00
9
  0% 59.7° 29.87 in   5% 14 miles
21:00
9
  0% 59.8° 29.89 in   6% 14 miles
22:00
8
  0% 59.9° 29.91 in   13% 14 miles
23:00
9
  0% 60.0° 29.93 in   20% 13 miles
 05:38     20:32    Daylength: 14:54 Saturday 24 Jun
00:00
9
  0% 59.9° 29.95 in   23% 13 miles
01:00
8
  0% 59.4° 29.99 in   18% 13 miles
02:00
7
  0% 58.8° 30.00 in   10% 13 miles
03:00
6
  0% 58.1° 30.02 in   3% 13 miles
04:00
6
  0% 56.9° 30.03 in   1% 13 miles
05:00
6
  0% 55.0° 30.05 in   1% 13 miles
06:00
6
  0% 55.7° 30.08 in UV
UV Index: 1
0% 13 miles
07:00
7
  0% 55.3° 30.10 in UV
UV Index: 2
0% 13 miles
08:00
8
  0% 54.3° 30.11 in UV
UV Index: 4
0% 13 miles
09:00
9
  0% 53.1° 30.13 in UV
UV Index: 6
0% 14 miles
10:00
10
  0% 52.3° 30.14 in UV
UV Index: 8
0% 14 miles
11:00
10
  0% 51.7° 30.15 in UV
UV Index: 9
0% 14 miles
Move the mouse over the values for info.

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