O'Fallon

US · 167m

Live · updated just now

Current conditions

Mainly clear
29°C
Feels like 34°C · Mainly clear
Humidity
75%
Wind
6 km/h NE
Pressure
1015 hPa
UV Index
1.5 Low
Cloud Cover
0%
Precipitation
0.1 mm
Sunrise
5:48 AM
Sunset
8:24 PM
Compare

What to expect today in O'Fallon

Right now in O'Fallon it's 29°C with mainly clear. It feels warmer than that, more like 34°C. Today's high should reach 31°C with an overnight low near 21°C. Expect thunderstorms overnight, with chances peaking near 74%. Tomorrow looks similar, with highs near 31°C with thunderstorm.

Next 25 Hours

Now
Mainly clear
24°C
·
01:00
Mainly clear
24°C
·
02:00
Mainly clear
23°C
·
03:00
Fog
23°C
·
04:00
Fog
23°C
·
05:00
Fog
23°C
·
06:00
Fog
22°C
·
07:00
Partly cloudy
24°C
·
08:00
Partly cloudy
25°C
·
09:00
Slight rain showers
26°C
0.6
10:00
Slight rain showers
28°C
2.0
11:00
Thunderstorm
29°C
1.0
12:00
Thunderstorm
30°C
0.3
13:00
Thunderstorm
31°C
0.1
14:00
Slight rain showers
31°C
0.3
15:00
Slight rain showers
31°C
0.6
16:00
Slight rain showers
31°C
0.7
17:00
Slight rain showers
31°C
0.2
18:00
Overcast
30°C
2.4
19:00
Overcast
26°C
0.5
20:00
Slight rain showers
26°C
·
21:00
Overcast
25°C
·
22:00
Overcast
25°C
·
23:00
Overcast
24°C
·
00:00
Overcast
24°C
·

10-Day Forecast

Forecast trends

Next 24 hours — temperature & precipitation

10-day outlook — high / low & rainfall

O'Fallon on the map

About O'Fallon

O'Fallon, Illinois is located in the central part of the United States. It is known for its growing community and pleasant, temperate climate.

O'Fallon, Illinois experiences four distinct seasons with cold winters and warm, humid summers. Temperatures typically range from lows near freezing in winter to highs in the mid-to-upper 80s in July. Expect significant rainfall during spring and summer, with occasional winter snow.

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