Extended 10-day forecasts, O'Fallon (IL)
Hourly detail for the next 48 hours, six-hourly segments for the rest of the week.
This is the 10-day extended forecast for O'Fallon, the United States of America. The forecast is updated every three hours and displays the temperature, weather conditions, wind direction and speed, as well as the chance of precipitation.
Check out our July climate page to see if the current temperatures in O'Fallon is typical for this time of year.
Today · Friday 17 Jul
Hour by hour
| Time | Weather | Temp | Precip | Humidity | Wind |
|---|---|---|---|---|---|
| 13:00 |
Partly cloudy
|
32°C (90°F) | 0 mm (0 in) | 56% | W 3 m/s (6 knots) |
| 14:00 |
Partly cloudy
|
33°C (91°F) | 0 mm (0 in) | 53% | W 3 m/s (6 knots) |
| 15:00 |
Mostly sunny
|
33°C (91°F) | 0 mm (0 in) | 50% | W 4 m/s (8 knots) |
| 16:00 |
Mostly sunny
|
33°C (91°F) | 0 mm (0 in) | 48% | W 4 m/s (8 knots) |
| 17:00 |
Mostly sunny
|
33°C (91°F) | 0 mm (0 in) | 48% | W 4 m/s (8 knots) |
| 18:00 |
Mostly sunny
|
33°C (91°F) | 0 mm (0 in) | 48% | W 4 m/s (8 knots) |
| 19:00 |
Mostly sunny
|
32°C (90°F) | 0 mm (0 in) | 53% | W 3 m/s (6 knots) |
| 20:00 |
Mostly clear
|
30°C (86°F) | 0 mm (0 in) | 63% | SW 2 m/s (4 knots) |
| 21:00 |
Clear skies
|
29°C (84°F) | 0 mm (0 in) | 67% | SW 2 m/s (4 knots) |
| 22:00 |
Clear skies
|
28°C (82°F) | 0 mm (0 in) | 71% | SW 2 m/s (4 knots) |
| 23:00 |
Clear skies
|
27°C (81°F) | 0 mm (0 in) | 75% | SW 2 m/s (4 knots) |
13:00
Partly cloudy
56% · W 3 m/s (6 knots)
32°C (90°F)
0 mm (0 in)
14:00
Partly cloudy
53% · W 3 m/s (6 knots)
33°C (91°F)
0 mm (0 in)
15:00
Mostly sunny
50% · W 4 m/s (8 knots)
33°C (91°F)
0 mm (0 in)
16:00
Mostly sunny
48% · W 4 m/s (8 knots)
33°C (91°F)
0 mm (0 in)
17:00
Mostly sunny
48% · W 4 m/s (8 knots)
33°C (91°F)
0 mm (0 in)
18:00
Mostly sunny
48% · W 4 m/s (8 knots)
33°C (91°F)
0 mm (0 in)
19:00
Mostly sunny
53% · W 3 m/s (6 knots)
32°C (90°F)
0 mm (0 in)
20:00
Mostly clear
63% · SW 2 m/s (4 knots)
30°C (86°F)
0 mm (0 in)
21:00
Clear skies
67% · SW 2 m/s (4 knots)
29°C (84°F)
0 mm (0 in)
22:00
Clear skies
71% · SW 2 m/s (4 knots)
28°C (82°F)
0 mm (0 in)
23:00
Clear skies
75% · SW 2 m/s (4 knots)
27°C (81°F)
0 mm (0 in)
Tomorrow · Saturday 18 Jul
Hour by hour
| Time | Weather | Temp | Precip | Humidity | Wind |
|---|---|---|---|---|---|
| 00:00 |
Clear skies
|
27°C (81°F) | 0 mm (0 in) | 78% | SW 3 m/s (6 knots) |
| 01:00 |
Clear skies
|
26°C (79°F) | 0 mm (0 in) | 80% | SW 2 m/s (4 knots) |
| 02:00 |
Clear skies
|
26°C (79°F) | 0 mm (0 in) | 82% | W 3 m/s (6 knots) |
| 03:00 |
Clear skies
|
26°C (79°F) | 0 mm (0 in) | 79% | W 3 m/s (6 knots) |
| 04:00 |
Clear skies
|
26°C (79°F) | 0 mm (0 in) | 78% | W 3 m/s (6 knots) |
| 05:00 |
Clear skies
|
25°C (77°F) | 0 mm (0 in) | 81% | W 2 m/s (4 knots) |
| 06:00 |
Clear skies
|
25°C (77°F) | 0 mm (0 in) | 83% | W 2 m/s (4 knots) |
| 07:00 |
Clear skies
|
26°C (79°F) | 0 mm (0 in) | 81% | SW 3 m/s (6 knots) |
| 08:00 |
Clear skies
|
27°C (81°F) | 0 mm (0 in) | 75% | W 3 m/s (6 knots) |
| 09:00 |
Clear skies
|
29°C (84°F) | 0 mm (0 in) | 68% | W 4 m/s (8 knots) |
| 10:00 |
Mostly sunny
|
31°C (88°F) | 0 mm (0 in) | 62% | W 5 m/s (10 knots) |
| 11:00 |
Mostly sunny
|
32°C (90°F) | 0 mm (0 in) | 58% | W 5 m/s (10 knots) |
| 12:00 |
Rain
|
33°C (91°F) | 0.7 mm (0.03 in) | 55% | W 5 m/s (10 knots) |
| 13:00 |
Heavy rain
|
31°C (88°F) | 3.8 mm (0.1 in) | 60% | NW 5 m/s (10 knots) |
| 14:00 |
Rain
|
27°C (81°F) | 0.6 mm (0.02 in) | 89% | N 4 m/s (8 knots) |
| 15:00 |
Light rain showers
|
30°C (86°F) | 0.2 mm (0.01 in) | 75% | W 4 m/s (8 knots) |
| 16:00 |
Partly cloudy
|
32°C (90°F) | 0 mm (0 in) | 62% | W 4 m/s (8 knots) |
| 17:00 |
Mostly sunny
|
32°C (90°F) | 0 mm (0 in) | 57% | W 4 m/s (8 knots) |
| 18:00 |
Clear skies
|
32°C (90°F) | 0 mm (0 in) | 58% | W 4 m/s (8 knots) |
| 19:00 |
Mostly sunny
|
31°C (88°F) | 0 mm (0 in) | 61% | W 4 m/s (8 knots) |
| 20:00 |
Mostly clear
|
30°C (86°F) | 0 mm (0 in) | 68% | W 3 m/s (6 knots) |
| 21:00 |
Clear skies
|
29°C (84°F) | 0 mm (0 in) | 71% | W 2 m/s (4 knots) |
| 22:00 |
Clear skies
|
28°C (82°F) | 0 mm (0 in) | 75% | W 2 m/s (4 knots) |
| 23:00 |
Clear skies
|
27°C (81°F) | 0 mm (0 in) | 78% | W 2 m/s (4 knots) |
00:00
Clear skies
78% · SW 3 m/s (6 knots)
27°C (81°F)
0 mm (0 in)
01:00
Clear skies
80% · SW 2 m/s (4 knots)
26°C (79°F)
0 mm (0 in)
02:00
Clear skies
82% · W 3 m/s (6 knots)
26°C (79°F)
0 mm (0 in)
03:00
Clear skies
79% · W 3 m/s (6 knots)
26°C (79°F)
0 mm (0 in)
04:00
Clear skies
78% · W 3 m/s (6 knots)
26°C (79°F)
0 mm (0 in)
05:00
Clear skies
81% · W 2 m/s (4 knots)
25°C (77°F)
0 mm (0 in)
06:00
Clear skies
83% · W 2 m/s (4 knots)
25°C (77°F)
0 mm (0 in)
07:00
Clear skies
81% · SW 3 m/s (6 knots)
26°C (79°F)
0 mm (0 in)
08:00
Clear skies
75% · W 3 m/s (6 knots)
27°C (81°F)
0 mm (0 in)
09:00
Clear skies
68% · W 4 m/s (8 knots)
29°C (84°F)
0 mm (0 in)
10:00
Mostly sunny
62% · W 5 m/s (10 knots)
31°C (88°F)
0 mm (0 in)
11:00
Mostly sunny
58% · W 5 m/s (10 knots)
32°C (90°F)
0 mm (0 in)
12:00
Rain
55% · W 5 m/s (10 knots)
33°C (91°F)
0.7 mm (0.03 in)
13:00
Heavy rain
60% · NW 5 m/s (10 knots)
31°C (88°F)
3.8 mm (0.1 in)
14:00
Rain
89% · N 4 m/s (8 knots)
27°C (81°F)
0.6 mm (0.02 in)
15:00
Light rain showers
75% · W 4 m/s (8 knots)
30°C (86°F)
0.2 mm (0.01 in)
16:00
Partly cloudy
62% · W 4 m/s (8 knots)
32°C (90°F)
0 mm (0 in)
17:00
Mostly sunny
57% · W 4 m/s (8 knots)
32°C (90°F)
0 mm (0 in)
18:00
Clear skies
58% · W 4 m/s (8 knots)
32°C (90°F)
0 mm (0 in)
19:00
Mostly sunny
61% · W 4 m/s (8 knots)
31°C (88°F)
0 mm (0 in)
20:00
Mostly clear
68% · W 3 m/s (6 knots)
30°C (86°F)
0 mm (0 in)
21:00
Clear skies
71% · W 2 m/s (4 knots)
29°C (84°F)
0 mm (0 in)
22:00
Clear skies
75% · W 2 m/s (4 knots)
28°C (82°F)
0 mm (0 in)
23:00
Clear skies
78% · W 2 m/s (4 knots)
27°C (81°F)
0 mm (0 in)
Next 7 days
Six-hour segments
Day
Night
01:00
Morning
07:00
Afternoon
13:00
Evening
19:00
Sunday
19 Jul
26°C (79°F)
0.1 mm (0 in)
Mostly clear
82% · SW 4 m/s (8 knots)
25°C (77°F)
0.1 mm (0 in)
Mostly sunny
86% · NW 2 m/s (4 knots)
32°C (90°F)
3.1 mm (0.1 in)
Rain showers
65% · NE 2 m/s (4 knots)
28°C (82°F)
0 mm (0 in)
Clear skies
79% · SE 2 m/s (4 knots)
Sun
19 Jul
night
26°C (79°F)
0.1 mm (0 in)
Mostly clear
82%
4 m/s (8 knots)
morning
25°C (77°F)
0.1 mm (0 in)
Mostly sunny
86%
2 m/s (4 knots)
afternoon
32°C (90°F)
3.1 mm (0.1 in)
Rain showers
65%
2 m/s (4 knots)
evening
28°C (82°F)
0 mm (0 in)
Clear skies
79%
2 m/s (4 knots)
Monday
20 Jul
25°C (77°F)
0 mm (0 in)
Clear skies
97% · E 2 m/s (4 knots)
24°C (75°F)
0.2 mm (0.01 in)
Cloudy
99% · SE 1 m/s (2 knots)
34°C (93°F)
0.6 mm (0.02 in)
Light rain showers
56% · SW 1 m/s (2 knots)
33°C (91°F)
0 mm (0 in)
Mostly clear
57% · S 3 m/s (6 knots)
Mon
20 Jul
night
25°C (77°F)
0 mm (0 in)
Clear skies
97%
2 m/s (4 knots)
morning
24°C (75°F)
0.2 mm (0.01 in)
Cloudy
99%
1 m/s (2 knots)
afternoon
34°C (93°F)
0.6 mm (0.02 in)
Light rain showers
56%
1 m/s (2 knots)
evening
33°C (91°F)
0 mm (0 in)
Mostly clear
57%
3 m/s (6 knots)
Tuesday
21 Jul
28°C (82°F)
0 mm (0 in)
Partly cloudy
79% · SW 4 m/s (8 knots)
28°C (82°F)
0 mm (0 in)
Mostly sunny
70% · SW 4 m/s (8 knots)
38°C (100°F)
0.7 mm (0.03 in)
Light rain showers
43% · W 4 m/s (8 knots)
33°C (91°F)
0 mm (0 in)
Mostly clear
53% · N 6 m/s (12 knots)
Tue
21 Jul
night
28°C (82°F)
0 mm (0 in)
Partly cloudy
79%
4 m/s (8 knots)
morning
28°C (82°F)
0 mm (0 in)
Mostly sunny
70%
4 m/s (8 knots)
afternoon
38°C (100°F)
0.7 mm (0.03 in)
Light rain showers
43%
4 m/s (8 knots)
evening
33°C (91°F)
0 mm (0 in)
Mostly clear
53%
6 m/s (12 knots)
Wednesday
22 Jul
26°C (79°F)
0 mm (0 in)
Clear skies
63% · N 5 m/s (10 knots)
23°C (73°F)
0 mm (0 in)
Clear skies
69% · NW 4 m/s (8 knots)
29°C (84°F)
0 mm (0 in)
Partly cloudy
36% · NW 6 m/s (12 knots)
26°C (79°F)
0 mm (0 in)
Clear skies
39% · N 5 m/s (10 knots)
Wed
22 Jul
night
26°C (79°F)
0 mm (0 in)
Clear skies
63%
5 m/s (10 knots)
morning
23°C (73°F)
0 mm (0 in)
Clear skies
69%
4 m/s (8 knots)
afternoon
29°C (84°F)
0 mm (0 in)
Partly cloudy
36%
6 m/s (12 knots)
evening
26°C (79°F)
0 mm (0 in)
Clear skies
39%
5 m/s (10 knots)
Thursday
23 Jul
19°C (66°F)
0 mm (0 in)
Clear skies
72% · NE 2 m/s (4 knots)
18°C (64°F)
0 mm (0 in)
Cloudy
76% · N 2 m/s (4 knots)
26°C (79°F)
0 mm (0 in)
Cloudy
45% · N 1 m/s (2 knots)
27°C (81°F)
0 mm (0 in)
Clear skies
47% · NW 3 m/s (6 knots)
Thu
23 Jul
night
19°C (66°F)
0 mm (0 in)
Clear skies
72%
2 m/s (4 knots)
morning
18°C (64°F)
0 mm (0 in)
Cloudy
76%
2 m/s (4 knots)
afternoon
26°C (79°F)
0 mm (0 in)
Cloudy
45%
1 m/s (2 knots)
evening
27°C (81°F)
0 mm (0 in)
Clear skies
47%
3 m/s (6 knots)
Friday
24 Jul
20°C (68°F)
0 mm (0 in)
Clear skies
70% · E 2 m/s (4 knots)
18°C (64°F)
0 mm (0 in)
Clear skies
81% · E 2 m/s (4 knots)
28°C (82°F)
0 mm (0 in)
Clear skies
30% · E 3 m/s (6 knots)
27°C (81°F)
0 mm (0 in)
Clear skies
37% · E 3 m/s (6 knots)
Fri
24 Jul
night
20°C (68°F)
0 mm (0 in)
Clear skies
70%
2 m/s (4 knots)
morning
18°C (64°F)
0 mm (0 in)
Clear skies
81%
2 m/s (4 knots)
afternoon
28°C (82°F)
0 mm (0 in)
Clear skies
30%
3 m/s (6 knots)
evening
27°C (81°F)
0 mm (0 in)
Clear skies
37%
3 m/s (6 knots)
Saturday
25 Jul
20°C (68°F)
0 mm (0 in)
Clear skies
68% · E 2 m/s (4 knots)
19°C (66°F)
0 mm (0 in)
Mostly sunny
72% · E 2 m/s (4 knots)
30°C (86°F)
0 mm (0 in)
Cloudy
38% · SE 2 m/s (4 knots)
30°C (86°F)
0 mm (0 in)
Cloudy
36% · E 2 m/s (4 knots)
Sat
25 Jul
night
20°C (68°F)
0 mm (0 in)
Clear skies
68%
2 m/s (4 knots)
morning
19°C (66°F)
0 mm (0 in)
Mostly sunny
72%
2 m/s (4 knots)
afternoon
30°C (86°F)
0 mm (0 in)
Cloudy
38%
2 m/s (4 knots)
evening
30°C (86°F)
0 mm (0 in)
Cloudy
36%
2 m/s (4 knots)
Data from MET Norway.
Prefer the quick-glance version? See the 10-day summary.
O'Fallon weather by month
Browse monthly averages for O'Fallon: climate by month with temperature, rainfall and sunshine.
Other forecasts in the United States of America
10-day forecasts for popular destinations across the United States of America.
Planning a trip to O'Fallon? See the United States of America bucket list →