Updated: August 21, 2017 5:25 am
Next update: August 21, 2017 4:25 pm

WXSIM Forecast for: O'Fallon

Today


70% Tonight


60% Tuesday


Tuesday
night


Wednesday


Wednesday
night


Thursday


Thursday
night


Friday











4
6
5
6
5
4
8
6
8

Temperature/Precipitation/PressureThunder/Dewpoint/Pressure UV/Solar radiation Wind Max/min temperature
  Conditions Temperature Wind Precipitation UV Index Description and notes
Today
4
  UV
UV Index: 7
Partly cloudy. Patchy light fog in the morning. Very hot.
Heat index: 109°.
Tonight
6
0.5 in
PoP: 70%
Mostly cloudy. Moderate fog after midnight. A chance of rain in the evening, then rain likely after midnight.
Scattered thundershowers possible. Precipitation mostly around half an inch.
Tuesday
5
0.25 in
PoP: 60%
UV
UV Index: 4
Cloudy. Light to moderate fog in the morning. Rain likely.
Scattered thundershowers possible.
Heat index: 92°. Precipitation mostly around a quarter of an inch.
Tuesday night
6
  Mostly cloudy.
Wednesday
5
  UV
UV Index: 8
Mostly sunny in the morning, becoming sunny in the afternoon.
Wednesday night
4
  Clear in the evening, becoming fair to partly cloudy after midnight.
Thursday
8
  UV
UV Index: 8
Mostly sunny in the morning, becoming sunny in the afternoon.
Thursday night
6
  Clear in the evening, becoming partly cloudy after midnight.
Friday
8
  UV
UV Index: 6
Partly to mostly cloudy in the morning, becoming mostly cloudy in the afternoon.
Friday night
6
  Mostly cloudy in the evening, becoming partly cloudy after midnight. Light to moderate fog after midnight. Relatively cool.
Saturday
7
  UV
UV Index: 8
Sunny in the morning, becoming partly to mostly sunny in the afternoon. Light to moderate fog in the morning.
Saturday night
5
  Partly to mostly cloudy in the evening, becoming partly cloudy after midnight. Relatively cool.
Sunday
6
  UV
UV Index: 6
Partly to mostly cloudy in the morning, becoming mostly cloudy in the afternoon.
Sunday night
5
  Partly to mostly cloudy in the evening, becoming mostly cloudy to cloudy after midnight.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Pressure UV Index Description and notes
 06:22     19:48    Daylength: 13:26 Today
09:00
Heat index:97F
4
  30.10 in UV
UV Index: 7
Sunny.
12:00
Heat index:103F
5
  30.05 in UV
UV Index: 6
Sunny.
15:00
Heat index:103F
5
0.03 in 30.00 in UV
UV Index: 3
Partly cloudy.
Light rain showers.
18:00
Heat index:102F
5
0.02 in 30.00 in   Mostly cloudy.
Light rain showers.
21:00
6
0.03 in 29.98 in   Mostly cloudy.
Light rain showers.
 06:23     19:47    Daylength: 13:23 Tomorrow
00:00
8
0.28 in 29.96 in   Mostly cloudy.
Light rain showers.
03:00
6
0.13 in 29.95 in   Mostly cloudy.
Light rain showers.
06:00
5
0.11 in 29.97 in UV
UV Index: 1
Mostly cloudy.
Light rain showers.
09:00
4
0.04 in 30.00 in UV
UV Index: 4
Mostly cloudy.
Light rain showers.
12:00
5
0.02 in 29.97 in UV
UV Index: 4
Mostly cloudy.
Light rain showers.
15:00
6
  29.94 in UV
UV Index: 2
Mostly cloudy.
18:00
6
  29.97 in   Mostly cloudy.
21:00
8
  30.01 in   Mostly cloudy.
 06:24     19:46    Daylength: 13:21 Wednesday 23 Aug
00:00
8
  30.04 in   Partly cloudy.
03:00
5
  30.05 in   Partly cloudy.
06:00
4
  30.07 in UV
UV Index: 3
Mostly clear.
09:00
5
  30.09 in UV
UV Index: 8
Sunny.
12:00
6
  30.04 in UV
UV Index: 8
Sunny.
15:00
6
  29.97 in UV
UV Index: 4
Sunny.
18:00
4
  29.98 in   Sunny.
21:00
4
  30.02 in   Clear.
 06:25     19:44    Daylength: 13:19 Thursday 24 Aug
00:00
4
  30.03 in   Mostly clear.
03:00
3
  30.03 in   Partly cloudy.
06:00
3
  30.07 in UV
UV Index: 3
Partly cloudy.
09:00
5
  30.09 in UV
UV Index: 8
Sunny.
12:00
7
  30.06 in UV
UV Index: 8
Sunny.
15:00
9
  30.02 in UV
UV Index: 4
Sunny.
18:00
6
  30.05 in   Sunny.
21:00
6
  30.10 in   Clear.
 06:26     19:43    Daylength: 13:16 Friday 25 Aug
00:00
6
  30.10 in   Clear.
03:00
5
  30.13 in   Clear.
06:00
5
  30.17 in UV
UV Index: 2
Clear.
09:00
8
  30.20 in UV
UV Index: 6
Sunny.
12:00
9
  30.17 in UV
UV Index: 6
Sunny.
15:00
10
  30.13 in UV
UV Index: 2
Sunny.
18:00
7
  30.16 in   Sunny.
21:00
7
  30.20 in   Clear.
 06:27     19:41    Daylength: 13:14 Saturday 26 Aug
00:00
6
  30.20 in   Clear.
03:00
5
  30.22 in   Clear.
Moderate fog.
06:00
5
  30.24 in UV
UV Index: 3
Clear.
Light fog.
09:00
7
  30.23 in UV
UV Index: 8
Sunny.
12:00
8
  30.18 in UV
UV Index: 8
Sunny.
15:00
8
  30.13 in UV
UV Index: 3
Sunny.
18:00
6
  30.12 in   Mostly sunny.
21:00
6
  30.14 in   Mostly clear.
 06:28     19:40    Daylength: 13:12 Sunday 27 Aug
00:00
6
  30.13 in   Clear.
03:00
5
  30.12 in   Clear.
Light fog.
06:00
3
  30.13 in UV
UV Index: 2
Clear.
Light fog.
09:00
5
  30.13 in UV
UV Index: 5
Sunny.
12:00
7
  30.06 in UV
UV Index: 6
Sunny.
15:00
7
  30.00 in UV
UV Index: 3
Sunny.
18:00
6
  30.00 in   Sunny.
Move the mouse over the values for info.
  Conditions Temperature Wind Precipitation Thunderstorm probability Dewpoint Pressure UV Index Cloud cover Visibility
 06:22     19:48    Daylength: 13:26 Today
07:00
4
  <20% 74.7° 30.09 in UV
UV Index: 1
9% 12 miles
08:00
Heat index:92F
4
  <20% 75.8° 30.10 in UV
UV Index: 2
6% 12 miles
09:00
Heat index:97F
4
  <20% 76.1° 30.10 in UV
UV Index: 4
4% 11 miles
10:00
Heat index:100F
4
  <20% 74.9° 30.09 in UV
UV Index: 6
3% 11 miles
11:00
Heat index:103F
5
  <20% 73.0° 30.07 in UV
UV Index: 7
4% 11 miles
12:00
Heat index:103F
5
  <20% 71.4° 30.05 in UV
UV Index: 2
5% 12 miles
13:00
Heat index:100F
5
  20-40% 70.4° 30.02 in UV
UV Index: 6
4% 12 miles
14:00
Heat index:102F
5
  20-40% 69.8° 30.00 in UV
UV Index: 5
4% 12 miles
15:00
Heat index:103F
5
0.01 in 20-40% 69.4° 30.00 in UV
UV Index: 3
36% 10 miles
16:00
Heat index:102F
5
0.01 in 40-60% 69.0° 30.00 in UV
UV Index: 1
40% 10 miles
17:00
Heat index:98F
5
0.01 in 40-60% 68.7° 30.00 in   43% 10 miles
18:00
5
0.01 in 40-60% 69.2° 30.00 in   46% 11 miles
19:00
5
  40-60% 70.2° 29.99 in   49% 10 miles
20:00
6
0.01 in 40-60% 71.4° 29.99 in   53% 10 miles
21:00
6
0.01 in 20-40% 72.3° 29.98 in   54% 10 miles
22:00
6
0.01 in 20-40% 72.8° 29.97 in   52% 10 miles
23:00
7
0.01 in 20-40% 73.0° 29.96 in   50% 10 miles
 06:23     19:47    Daylength: 13:23 Tomorrow
00:00
8
0.08 in <20% 73.2° 29.96 in   48% 5.4 miles
01:00
7
0.10 in 20-40% 73.3° 29.96 in   51% 2.5 miles
02:00
7
0.10 in 20-40% 73.3° 29.96 in   55% 0.5 miles
03:00
6
0.05 in 20-40% 73.7° 29.95 in   56% 0.5 miles
04:00
5
0.04 in 20-40% 73.6° 29.95 in   55% 0.5 miles
05:00
5
0.04 in 20-40% 72.7° 29.95 in   53% 0.6 miles
06:00
5
0.04 in 20-40% 73.2° 29.97 in   55% 0.7 miles
07:00
4
0.05 in 20-40% 73.9° 29.98 in   65% 0.8 miles
08:00
4
0.02 in 20-40% 74.0° 29.99 in UV
UV Index: 1
75% 1.1 miles
09:00
4
0.01 in 40-60% 73.9° 30.00 in UV
UV Index: 2
82% 3.1 miles
10:00
4
0.01 in 20-40% 73.7° 29.99 in UV
UV Index: 3
83% 10 miles
11:00
4
0.02 in 20-40% 73.9° 29.98 in UV
UV Index: 4
85% 10 miles
12:00
5
  20-40% 74.1° 29.97 in UV
UV Index: 4
86% 10 miles
13:00
5
0.01 in 20-40% 74.4° 29.95 in UV
UV Index: 4
86% 11 miles
14:00
6
0.01 in 20-40% 74.6° 29.94 in UV
UV Index: 3
85% 11 miles
15:00
6
  <20% 74.3° 29.94 in UV
UV Index: 2
85% 12 miles
16:00
6
  <20% 73.1° 29.95 in UV
UV Index: 1
67% 12 miles
17:00
6
  0% 71.4° 29.96 in UV
UV Index: 1
68% 12 miles
18:00
6
  0% 70.1° 29.97 in   69% 12 miles
19:00
6
  0% 69.2° 29.98 in   64% 12 miles
20:00
7
  0% 68.2° 29.99 in   57% 12 miles
21:00
8
  0% 67.1° 30.01 in   51% 12 miles
22:00
8
  0% 66.0° 30.02 in   42% 12 miles
23:00
8
  0% 64.7° 30.03 in   32% 12 miles
 06:24     19:46    Daylength: 13:21 Wednesday 23 Aug
00:00
8
  0% 63.5° 30.04 in   27% 12 miles
01:00
6
  0% 62.6° 30.05 in   32% 12 miles
02:00
5
  0% 61.6° 30.05 in   36% 12 miles
03:00
5
  0% 60.5° 30.05 in   38% 12 miles
04:00
5
  0% 59.2° 30.05 in   31% 12 miles
05:00
4
  0% 57.7° 30.06 in   23% 12 miles
06:00
4
  0% 56.7° 30.07 in   15% 12 miles
Move the mouse over the values for info.

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