St Louis Downtown Airport Weather Forecast 15 Days, Weather in CPS Today
Current weather conditions and 15 day weather forecast for St Louis Downtown Airport, Illinois, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at St Louis Downtown Airport
| 20 August 2025 Wednesday 26.1 ° C / 79°F  Partly cloudy |
Feels Like : 28.5 ° C / 83.3°F Humidity : % 72 Pressure : 1018 mb Wind Speed : 12.6 kmph / 7.8 miles from NE  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 75 |
15 day weather forecast for St Louis Downtown Airport, IL, USA
Weather Forecast for next 15 Days for St Louis Downtown Airport including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in St Louis Downtown Airport, Illinois state, US. To see the daily forecast, scroll to the table below.
| Date | |
|---|---|
| 20 August 2025 Wednesday | |
| Weather forecast |  Cloudy |
| Low temperature | 21.7 ° C (71.1°F) |
| High temperature | 32.8 ° C (91°F) |
| Avg. temperature | 26 ° C (78.8°F) |
| Humidity | % 77 |
| Chance of rain | 0% |
| UV Index | 2.1 |
| Sun Position | Sunrise:06:19 AM Sunset: 07:48 PM |
| Moon Position | Moonrise:03:09 AM Moonset: 06:37 PM Moon Phase ( Waning Crescent ) |
| 21 August 2025 Thursday | |
| Weather forecast | Partly Cloudy |
| Low temperature | 17.4 ° C (63.3°F) |
| High temperature | 30.4 ° C (86.7°F) |
| Avg. temperature | 23.1 ° C (73.5°F) |
| Humidity | % 75 |
| Chance of rain | 0% |
| UV Index | 2.3 |
| Sun Position | Sunrise:06:20 AM Sunset: 07:46 PM |
| Moon Position | Moonrise:04:21 AM Moonset: 07:13 PM Moon Phase ( Waning Crescent ) |
| 22 August 2025 Friday | |
| Weather forecast | Partly Cloudy |
| Low temperature | 17.7 ° C (63.9°F) |
| High temperature | 28 ° C (82.4°F) |
| Avg. temperature | 22.6 ° C (72.8°F) |
| Humidity | % 75 |
| Chance of rain | 0% |
| UV Index | 2.3 |
| Sun Position | Sunrise:06:21 AM Sunset: 07:45 PM |
| Moon Position | Moonrise:05:32 AM Moonset: 07:41 PM Moon Phase ( Waning Crescent ) |
| 23 August 2025 Saturday | |
| Weather forecast |  Sunny |
| Low temperature | 18.5 ° C (65.2°F) |
| High temperature | 30.3 ° C (86.5°F) |
| Avg. temperature | 23.4 ° C (74.2°F) |
| Humidity | % 70 |
| Chance of rain | 0% |
| UV Index | 2 |
| Sun Position | Sunrise:06:22 AM Sunset: 07:44 PM |
| Moon Position | Moonrise:06:39 AM Moonset: 08:06 PM Moon Phase ( New Moon ) |
| 24 August 2025 Sunday | |
| Weather forecast | Sunny |
| Low temperature | 17 ° C (62.6°F) |
| High temperature | 27.9 ° C (82.2°F) |
| Avg. temperature | 22.3 ° C (72.1°F) |
| Humidity | % 60 |
| Chance of rain | 0% |
| UV Index | 0 |
| Sun Position | Sunrise:06:23 AM Sunset: 07:42 PM |
| Moon Position | Moonrise:07:44 AM Moonset: 08:27 PM Moon Phase ( Waxing Crescent ) |
| 25 August 2025 Monday | |
| Weather forecast | Sunny |
| Low temperature | 12.9 ° C (55.3°F) |
| High temperature | 22.6 ° C (72.6°F) |
| Avg. temperature | 17.1 ° C (62.8°F) |
| Humidity | % 57 |
| Chance of rain | 0% |
| UV Index | 5 |
| Sun Position | Sunrise:06:24 AM Sunset: 07:41 PM |
| Moon Position | Moonrise:08:45 AM Moonset: 08:49 PM Moon Phase ( Waxing Crescent ) |
| 26 August 2025 Tuesday | |
| Weather forecast | Sunny |
| Low temperature | 11.4 ° C (52.5°F) |
| High temperature | 23.5 ° C (74.3°F) |
| Avg. temperature | 17.2 ° C (62.9°F) |
| Humidity | % 54 |
| Chance of rain | 0% |
| UV Index | 5 |
| Sun Position | Sunrise:06:25 AM Sunset: 07:39 PM |
| Moon Position | Moonrise:09:46 AM Moonset: 09:10 PM Moon Phase ( Waxing Crescent ) |
| 27 August 2025 Wednesday | |
| Weather forecast | Sunny |
| Low temperature | 12.3 ° C (54.1°F) |
| High temperature | 26.5 ° C (79.7°F) |
| Avg. temperature | 19.1 ° C (66.5°F) |
| Humidity | % 52 |
| Chance of rain | 0% |
| UV Index | 5 |
| Sun Position | Sunrise:06:26 AM Sunset: 07:38 PM |
| Moon Position | Moonrise:10:46 AM Moonset: 09:33 PM Moon Phase ( Waxing Crescent ) |
| 28 August 2025 Thursday | |
| Weather forecast | Partly Cloudy |
| Low temperature | 16.2 ° C (61.2°F) |
| High temperature | 29.6 ° C (85.3°F) |
| Avg. temperature | 22.1 ° C (71.8°F) |
| Humidity | % 44 |
| Chance of rain | 0% |
| UV Index | 6 |
| Sun Position | Sunrise:06:26 AM Sunset: 07:36 PM |
| Moon Position | Moonrise:11:48 AM Moonset: 09:58 PM Moon Phase ( Waxing Crescent ) |
| 29 August 2025 Friday | |
| Weather forecast |  Patchy rain nearby |
| Low temperature | 17.4 ° C (63.4°F) |
| High temperature | 23.8 ° C (74.9°F) |
| Avg. temperature | 20 ° C (67.9°F) |
| Humidity | % 64 |
| Chance of rain | 83% |
| UV Index | 4 |
| Sun Position | Sunrise:06:27 AM Sunset: 07:35 PM |
| Moon Position | Moonrise:12:49 PM Moonset: 10:28 PM Moon Phase ( Waxing Crescent ) |
| 30 August 2025 Saturday | |
| Weather forecast |  Moderate rain |
| Low temperature | 18.4 ° C (65.1°F) |
| High temperature | 33.6 ° C (92.4°F) |
| Avg. temperature | 23.2 ° C (73.8°F) |
| Humidity | % 79 |
| Chance of rain | 79% |
| UV Index | 5 |
| Sun Position | Sunrise:06:28 AM Sunset: 07:33 PM |
| Moon Position | Moonrise:01:51 PM Moonset: 11:04 PM Moon Phase ( Waxing Crescent ) |
| 31 August 2025 Sunday | |
| Weather forecast | Moderate rain |
| Low temperature | 19.9 ° C (67.8°F) |
| High temperature | 33.4 ° C (92.1°F) |
| Avg. temperature | 25.9 ° C (78.7°F) |
| Humidity | % 75 |
| Chance of rain | 85% |
| UV Index | 6 |
| Sun Position | Sunrise:06:29 AM Sunset: 07:32 PM |
| Moon Position | Moonrise:02:51 PM Moonset: 11:48 PM Moon Phase ( First Quarter ) |
| 01 September 2025 Monday | |
| Weather forecast | Patchy rain nearby |
| Low temperature | 22.9 ° C (73.2°F) |
| High temperature | 33.7 ° C (92.7°F) |
| Avg. temperature | 26.4 ° C (79.5°F) |
| Humidity | % 76 |
| Chance of rain | 83% |
| UV Index | 6 |
| Sun Position | Sunrise:06:30 AM Sunset: 07:30 PM |
| Moon Position | Moonrise:03:48 PM Moonset: No moonset Moon Phase ( Waxing Gibbous ) |
| 02 September 2025 Tuesday | |
| Weather forecast | Patchy rain nearby |
| Low temperature | 22.4 ° C (72.4°F) |
| High temperature | 36.1 ° C (96.9°F) |
| Avg. temperature | 27.5 ° C (81.5°F) |
| Humidity | % 73 |
| Chance of rain | 67% |
| UV Index | 6 |
| Sun Position | Sunrise:06:31 AM Sunset: 07:29 PM |
| Moon Position | Moonrise:04:39 PM Moonset: 12:39 AM Moon Phase ( Waxing Gibbous ) |
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 20 August 2025 Wednesday | Cloudy |
21.7 ° C (71.1°F) |
32.8 ° C (91°F) |
26 ° C (78.8°F) |
% 77 | 0% | 2.1 | Sunrise:06:19 AM Sunset: 07:48 PM |
Moonrise:03:09 AM Moonset: 06:37 PM Moon Phase ( Waning Crescent ) |
|
| 21 August 2025 Thursday | Partly Cloudy |
17.4 ° C (63.3°F) |
30.4 ° C (86.7°F) |
23.1 ° C (73.5°F) |
% 75 | 0% | 2.3 | Sunrise:06:20 AM Sunset: 07:46 PM |
Moonrise:04:21 AM Moonset: 07:13 PM Moon Phase ( Waning Crescent ) |
|
| 22 August 2025 Friday | Partly Cloudy |
17.7 ° C (63.9°F) |
28 ° C (82.4°F) |
22.6 ° C (72.8°F) |
% 75 | 0% | 2.3 | Sunrise:06:21 AM Sunset: 07:45 PM |
Moonrise:05:32 AM Moonset: 07:41 PM Moon Phase ( Waning Crescent ) |
|
| 23 August 2025 Saturday | Sunny |
18.5 ° C (65.2°F) |
30.3 ° C (86.5°F) |
23.4 ° C (74.2°F) |
% 70 | 0% | 2 | Sunrise:06:22 AM Sunset: 07:44 PM |
Moonrise:06:39 AM Moonset: 08:06 PM Moon Phase ( New Moon ) |
|
| 24 August 2025 Sunday | Sunny |
17 ° C (62.6°F) |
27.9 ° C (82.2°F) |
22.3 ° C (72.1°F) |
% 60 | 0% | 0 | Sunrise:06:23 AM Sunset: 07:42 PM |
Moonrise:07:44 AM Moonset: 08:27 PM Moon Phase ( Waxing Crescent ) |
|
| 25 August 2025 Monday | Sunny |
12.9 ° C (55.3°F) |
22.6 ° C (72.6°F) |
17.1 ° C (62.8°F) |
% 57 | 0% | 5 | Sunrise:06:24 AM Sunset: 07:41 PM |
Moonrise:08:45 AM Moonset: 08:49 PM Moon Phase ( Waxing Crescent ) |
|
| 26 August 2025 Tuesday | Sunny |
11.4 ° C (52.5°F) |
23.5 ° C (74.3°F) |
17.2 ° C (62.9°F) |
% 54 | 0% | 5 | Sunrise:06:25 AM Sunset: 07:39 PM |
Moonrise:09:46 AM Moonset: 09:10 PM Moon Phase ( Waxing Crescent ) |
|
| 27 August 2025 Wednesday | Sunny |
12.3 ° C (54.1°F) |
26.5 ° C (79.7°F) |
19.1 ° C (66.5°F) |
% 52 | 0% | 5 | Sunrise:06:26 AM Sunset: 07:38 PM |
Moonrise:10:46 AM Moonset: 09:33 PM Moon Phase ( Waxing Crescent ) |
|
| 28 August 2025 Thursday | Partly Cloudy |
16.2 ° C (61.2°F) |
29.6 ° C (85.3°F) |
22.1 ° C (71.8°F) |
% 44 | 0% | 6 | Sunrise:06:26 AM Sunset: 07:36 PM |
Moonrise:11:48 AM Moonset: 09:58 PM Moon Phase ( Waxing Crescent ) |
|
| 29 August 2025 Friday | Patchy rain nearby |
17.4 ° C (63.4°F) |
23.8 ° C (74.9°F) |
20 ° C (67.9°F) |
% 64 | 83% | 4 | Sunrise:06:27 AM Sunset: 07:35 PM |
Moonrise:12:49 PM Moonset: 10:28 PM Moon Phase ( Waxing Crescent ) |
|
| 30 August 2025 Saturday | Moderate rain |
18.4 ° C (65.1°F) |
33.6 ° C (92.4°F) |
23.2 ° C (73.8°F) |
% 79 | 79% | 5 | Sunrise:06:28 AM Sunset: 07:33 PM |
Moonrise:01:51 PM Moonset: 11:04 PM Moon Phase ( Waxing Crescent ) |
|
| 31 August 2025 Sunday | Moderate rain |
19.9 ° C (67.8°F) |
33.4 ° C (92.1°F) |
25.9 ° C (78.7°F) |
% 75 | 85% | 6 | Sunrise:06:29 AM Sunset: 07:32 PM |
Moonrise:02:51 PM Moonset: 11:48 PM Moon Phase ( First Quarter ) |
|
| 01 September 2025 Monday | Patchy rain nearby |
22.9 ° C (73.2°F) |
33.7 ° C (92.7°F) |
26.4 ° C (79.5°F) |
% 76 | 83% | 6 | Sunrise:06:30 AM Sunset: 07:30 PM |
Moonrise:03:48 PM Moonset: No moonset Moon Phase ( Waxing Gibbous ) |
|
| 02 September 2025 Tuesday | Patchy rain nearby |
22.4 ° C (72.4°F) |
36.1 ° C (96.9°F) |
27.5 ° C (81.5°F) |
% 73 | 67% | 6 | Sunrise:06:31 AM Sunset: 07:29 PM |
Moonrise:04:39 PM Moonset: 12:39 AM Moon Phase ( Waxing Gibbous ) |
|
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