Foster Weather Forecast 15 Days, Weather in Foster Today
Current weather conditions and 15 day weather forecast for Foster, 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 Foster
| 08 February 2026 Sunday -0.6 ° C / 30.9°F  Clear |
Feels Like : -5.1 ° C / 22.8°F Humidity : % 59 Pressure : 1026 mb Wind Speed : 14.8 kmph / 9.2 miles from SE  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Foster, IL, USA
Weather Forecast for next 15 Days for Foster 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 Foster, Illinois state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 07 February 2026 Saturday | Sunny |
-2.5 ° C (27.5°F) |
4.6 ° C (40.3°F) |
0.4 ° C (32.8°F) |
% 61 | 0% | 0.6 | Sunrise:07:00 AM Sunset: 05:29 PM |
Moonrise:11:52 PM Moonset: 09:39 AM Moon Phase ( Waning Gibbous ) |
|
| 08 February 2026 Sunday |  Overcast |
-3.4 ° C (25.9°F) |
0.9 ° C (33.6°F) |
-1.7 ° C (29°F) |
% 84 | 0% | 0.5 | Sunrise:06:59 AM Sunset: 05:30 PM |
Moonrise:No moonrise Moonset: 10:05 AM Moon Phase ( Waning Gibbous ) |
|
| 09 February 2026 Monday | Overcast |
-1.5 ° C (29.3°F) |
3.2 ° C (37.8°F) |
0.2 ° C (32.4°F) |
% 93 | 0% | 0.6 | Sunrise:06:58 AM Sunset: 05:31 PM |
Moonrise:12:55 AM Moonset: 10:34 AM Moon Phase ( Last Quarter ) |
|
| 10 February 2026 Tuesday | Overcast |
0.6 ° C (33.1°F) |
3.5 ° C (38.3°F) |
2.1 ° C (35.7°F) |
% 94 | 0% | 0.5 | Sunrise:06:57 AM Sunset: 05:32 PM |
Moonrise:01:57 AM Moonset: 11:10 AM Moon Phase ( Waning Crescent ) |
|
| 11 February 2026 Wednesday | Sunny |
-0.5 ° C (31.2°F) |
8.9 ° C (48°F) |
3.9 ° C (39°F) |
% 58 | 0% | 0 | Sunrise:06:56 AM Sunset: 05:34 PM |
Moonrise:02:56 AM Moonset: 11:52 AM Moon Phase ( Waning Crescent ) |
|
| 12 February 2026 Thursday |  Partly Cloudy |
0.2 ° C (32.4°F) |
6.9 ° C (44.4°F) |
2.5 ° C (36.5°F) |
% 65 | 0% | 2 | Sunrise:06:55 AM Sunset: 05:35 PM |
Moonrise:03:53 AM Moonset: 12:42 PM Moon Phase ( Waning Crescent ) |
|
| 13 February 2026 Friday | Partly Cloudy |
-0.3 ° C (31.4°F) |
8 ° C (46.4°F) |
3.4 ° C (38.1°F) |
% 67 | 0% | 2 | Sunrise:06:54 AM Sunset: 05:36 PM |
Moonrise:04:42 AM Moonset: 01:40 PM Moon Phase ( Waning Crescent ) |
|
| 14 February 2026 Saturday |  Patchy rain nearby |
0.7 ° C (33.3°F) |
7.8 ° C (46°F) |
3.8 ° C (38.8°F) |
% 82 | 86% | 1 | Sunrise:06:52 AM Sunset: 05:37 PM |
Moonrise:05:25 AM Moonset: 02:43 PM Moon Phase ( Waning Crescent ) |
|
| 15 February 2026 Sunday | Patchy rain nearby |
8.8 ° C (47.8°F) |
14.6 ° C (58.3°F) |
11.2 ° C (52.2°F) |
% 76 | 84% | 3 | Sunrise:06:51 AM Sunset: 05:38 PM |
Moonrise:06:01 AM Moonset: 03:50 PM Moon Phase ( Waning Crescent ) |
|
| 16 February 2026 Monday | Overcast |
4.5 ° C (40.1°F) |
12.6 ° C (54.8°F) |
8.6 ° C (47.5°F) |
% 63 | 0% | 2 | Sunrise:06:50 AM Sunset: 05:39 PM |
Moonrise:06:32 AM Moonset: 04:57 PM Moon Phase ( Waning Crescent ) |
|
| 17 February 2026 Tuesday |  Moderate rain |
8.2 ° C (46.8°F) |
21.8 ° C (71.3°F) |
15 ° C (59.1°F) |
% 84 | 81% | 4 | Sunrise:06:49 AM Sunset: 05:40 PM |
Moonrise:06:59 AM Moonset: 06:05 PM Moon Phase ( New Moon ) |
|
| 18 February 2026 Wednesday | Patchy rain nearby |
9.2 ° C (48.5°F) |
16.5 ° C (61.7°F) |
13.8 ° C (56.9°F) |
% 66 | 76% | 3 | Sunrise:06:47 AM Sunset: 05:41 PM |
Moonrise:07:24 AM Moonset: 07:13 PM Moon Phase ( Waxing Crescent ) |
|
| 19 February 2026 Thursday | Patchy rain nearby |
8.2 ° C (46.8°F) |
16.5 ° C (61.6°F) |
11.7 ° C (53°F) |
% 85 | 82% | 3 | Sunrise:06:46 AM Sunset: 05:43 PM |
Moonrise:07:48 AM Moonset: 08:21 PM Moon Phase ( Waxing Crescent ) |
|
| 20 February 2026 Friday |  Blowing snow |
-2.8 ° C (26.9°F) |
5.2 ° C (41.3°F) |
3.3 ° C (37.9°F) |
% 68 | 0% | 1 | Sunrise:06:45 AM Sunset: 05:44 PM |
Moonrise:08:11 AM Moonset: 09:32 PM Moon Phase ( Waxing Crescent ) |
|
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