Updated: August 21, 2017 4:25 pm
Next update: August 22, 2017 5:25 am

WXSIM Forecast for: O'Fallon

70% Tonight


70% Tuesday


Tuesday
night


Wednesday


Wednesday
night


Thursday


Thursday
night


Friday


Friday
night











6
5
5
5
2
4
6
8
6

Temperature/Precipitation/PressureThunder/Dewpoint/Pressure UV/Solar radiation Wind Max/min temperature
  Conditions Temperature Wind Precipitation UV Index Description and notes
Tonight
6
0.5 in
PoP: 70%
Partly cloudy in the evening, becoming cloudy after midnight. Light to moderate fog after midnight. Rain likely after midnight.
Scattered thundershowers possible. Precipitation mostly around half an inch.
Tuesday
5
0.25-0.5 in
PoP: 70%
Cloudy. Light to moderate fog in the morning. Rain likely in the morning, then a chance of rain in the afternoon.
Scattered thundershowers possible.
Heat index: 93°. Precipitation mostly between a quarter and half an inch.
Tuesday night
5
  Partly cloudy in the evening, becoming mostly clear after midnight.
Wednesday
5
  UV
UV Index: 8
Sunny.
Wednesday night
2
  Mostly clear in the evening, becoming partly cloudy after midnight.
Thursday
4
  UV
UV Index: 8
Partly to mostly sunny in the morning, becoming sunny in the afternoon.
Thursday night
6
  Clear. Patchy light fog after midnight.
Friday
8
  UV
UV Index: 7
Partly cloudy in the morning, becoming partly to mostly cloudy in the afternoon. Patchy light fog in the morning.
Friday night
6
  Partly to mostly cloudy in the evening, becoming mostly cloudy after midnight.
Saturday
6
  UV
UV Index: 4
Mostly cloudy to cloudy in the morning, becoming cloudy in the afternoon.
Saturday night
6
  Mostly cloudy to cloudy in the evening, becoming partly cloudy after midnight.
Sunday
6
  UV
UV Index: 8
Partly cloudy in the morning, becoming sunny in the afternoon.
Sunday night
5
  Clear. Patchy light fog after midnight. Relatively cool.
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
21:00
Heat index:87F
6
0.06 in 29.95 in   Partly cloudy.
Light rain showers.
 06:23     19:47    Daylength: 13:23 Tomorrow
00:00
7
0.21 in 29.95 in   Mostly cloudy.
Light rain showers.
03:00
4
0.22 in 29.94 in   Mostly cloudy.
Light rain showers.
06:00
5
0.10 in 29.93 in UV
UV Index: 1
Mostly cloudy.
Light rain showers.
09:00
6
0.10 in 29.95 in UV
UV Index: 4
Cloudy.
Light rain.
12:00
Heat index:90F
5
0.06 in 29.93 in UV
UV Index: 4
Cloudy.
Light rain.
15:00
Heat index:93F
4
0.03 in 29.90 in UV
UV Index: 2
Cloudy.
Light rain.
18:00
Heat index:91F
3
  29.94 in   Mostly cloudy.
21:00
5
  29.98 in   Mostly clear.
 06:24     19:46    Daylength: 13:21 Wednesday 23 Aug
00:00
7
  30.01 in   Mostly clear.
03:00
6
  30.03 in   Mostly clear.
06:00
4
  30.06 in UV
UV Index: 3
Mostly clear.
09:00
5
  30.10 in UV
UV Index: 8
Mostly sunny.
12:00
5
  30.06 in UV
UV Index: 8
Sunny.
15:00
6
  29.99 in UV
UV Index: 4
Sunny.
18:00
3
  29.99 in   Sunny.
21:00
2
  30.03 in   Clear.
 06:25     19:44    Daylength: 13:19 Thursday 24 Aug
00:00
2
  30.02 in   Clear.
03:00
1
  30.00 in   Mostly clear.
06:00
1
  30.03 in UV
UV Index: 2
Mostly clear.
09:00
3
  30.05 in UV
UV Index: 8
Sunny.
12:00
4
  30.02 in UV
UV Index: 8
Sunny.
15:00
6
  29.97 in UV
UV Index: 4
Sunny.
18:00
5
  29.99 in   Mostly sunny.
21:00
5
  30.03 in   Mostly clear.
 06:26     19:43    Daylength: 13:16 Friday 25 Aug
00:00
6
  30.04 in   Mostly clear.
03:00
6
  30.08 in   Mostly clear.
Light fog.
06:00
5
  30.12 in UV
UV Index: 2
Mostly clear.
09:00
9
  30.15 in UV
UV Index: 7
Mostly sunny.
12:00
9
  30.12 in UV
UV Index: 7
Sunny.
15:00
10
  30.08 in UV
UV Index: 3
Mostly sunny.
18:00
7
  30.11 in   Mostly sunny.
21:00
6
  30.16 in   Mostly clear.
 06:27     19:41    Daylength: 13:14 Saturday 26 Aug
00:00
7
  30.15 in   Mostly clear.
03:00
7
  30.16 in   Mostly clear.
06:00
5
  30.18 in UV
UV Index: 2
Clear.
09:00
6
  30.19 in UV
UV Index: 4
Partly cloudy.
12:00
7
  30.16 in UV
UV Index: 4
Mostly cloudy.
15:00
7
  30.11 in UV
UV Index: 2
Cloudy.
18:00
6
  30.11 in   Partly cloudy.
21:00
6
  30.14 in   Partly cloudy.
 06:28     19:40    Daylength: 13:12 Sunday 27 Aug
00:00
6
  30.13 in   Mostly clear.
03:00
5
  30.13 in   Mostly clear.
06:00
4
  30.14 in UV
UV Index: 2
Mostly clear.
09:00
6
  30.14 in UV
UV Index: 8
Mostly sunny.
12:00
6
  30.10 in UV
UV Index: 8
Sunny.
15:00
7
  30.04 in UV
UV Index: 4
Sunny.
18:00
6
  30.05 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
21:00
Heat index:87F
6
  20-40% 71.8° 29.95 in   11% 12 miles
22:00
Heat index:87F
7
  20-40% 72.7° 29.94 in   14% 7.1 miles
23:00
7
0.06 in 20-40% 73.6° 29.94 in   48% 4.6 miles
 06:23     19:47    Daylength: 13:23 Tomorrow
00:00
7
0.07 in 20-40% 74.3° 29.95 in   54% 0.7 miles
01:00
7
0.07 in 20-40% 74.6° 29.95 in   64% 0.6 miles
02:00
5
0.07 in 20-40% 74.3° 29.95 in   75% 0.7 miles
03:00
4
0.08 in 40-60% 74.1° 29.94 in   81% 0.9 miles
04:00
4
0.07 in 40-60% 73.6° 29.93 in   80% 0.8 miles
05:00
4
0.07 in 20-40% 73.0° 29.93 in   80% 0.7 miles
06:00
5
0.04 in 20-40% 73.5° 29.93 in   80% 0.7 miles
07:00
6
0.03 in 20-40% 74.4° 29.94 in   81% 0.7 miles
08:00
6
0.03 in 20-40% 74.8° 29.95 in UV
UV Index: 1
83% 0.7 miles
09:00
6
0.04 in 20-40% 74.9° 29.95 in UV
UV Index: 2
86% 1.0 miles
10:00
6
0.03 in 20-40% 75.0° 29.95 in UV
UV Index: 3
91% 7.3 miles
11:00
5
0.03 in 20-40% 75.3° 29.94 in UV
UV Index: 4
96% 8.3 miles
12:00
Heat index:90F
5
0.02 in 40-60% 75.6° 29.93 in UV
UV Index: 4
99% 9.2 miles
13:00
Heat index:92F
5
0.02 in 40-60% 75.9° 29.91 in UV
UV Index: 4
99% 9.2 miles
14:00
Heat index:93F
4
0.02 in 40-60% 76.0° 29.90 in UV
UV Index: 3
98% 9.1 miles
15:00
Heat index:92F
4
0.01 in 20-40% 75.4° 29.90 in UV
UV Index: 2
98% 10 miles
16:00
Heat index:91F
4
0.01 in 20-40% 73.3° 29.91 in UV
UV Index: 1
92% 10 miles
17:00
Heat index:89F
4
0.01 in <20% 70.6° 29.93 in   86% 9.9 miles
18:00
Heat index:87F
3
  0% 69.0° 29.94 in   80% 11 miles
19:00
4
  0% 68.7° 29.95 in   40% 11 miles
20:00
4
  0% 68.8° 29.96 in   26% 11 miles
21:00
5
  0% 68.7° 29.98 in   13% 11 miles
22:00
5
  0% 68.1° 29.99 in   12% 11 miles
23:00
6
  0% 67.3° 30.00 in   12% 11 miles
 06:24     19:46    Daylength: 13:21 Wednesday 23 Aug
00:00
7
  0% 66.2° 30.01 in   12% 11 miles
01:00
7
  0% 65.0° 30.02 in   12% 11 miles
02:00
6
  0% 63.3° 30.03 in   12% 11 miles
03:00
6
  0% 61.4° 30.03 in   11% 11 miles
04:00
5
  0% 59.3° 30.04 in   12% 11 miles
05:00
4
  0% 57.2° 30.05 in   12% 11 miles
06:00
4
  0% 56.9° 30.06 in   12% 11 miles
07:00
4
  0% 57.8° 30.08 in UV
UV Index: 1
11% 11 miles
08:00
4
  0% 58.6° 30.09 in UV
UV Index: 3
10% 11 miles
09:00
5
  0% 58.9° 30.10 in UV
UV Index: 5
8% 11 miles
10:00
5
  0% 58.3° 30.09 in UV
UV Index: 7
6% 11 miles
11:00
5
  0% 57.7° 30.08 in UV
UV Index: 8
2% 12 miles
12:00
5
  0% 57.2° 30.06 in UV
UV Index: 8
0% 12 miles
13:00
6
  0% 56.9° 30.03 in UV
UV Index: 8
0% 12 miles
14:00
6
  0% 56.6° 30.00 in UV
UV Index: 6
0% 13 miles
15:00
6
  0% 56.5° 29.99 in UV
UV Index: 4
0% 13 miles
16:00
5
  0% 56.3° 29.99 in UV
UV Index: 2
0% 13 miles
17:00
4
  0% 56.0° 29.99 in UV
UV Index: 1
0% 13 miles
18:00
3
  0% 56.4° 29.99 in   0% 13 miles
19:00
2
  0% 57.1° 30.00 in   0% 12 miles
20:00
2
  0% 57.7° 30.02 in   0% 12 miles
Move the mouse over the values for info.

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