Grantfork Weather Forecast 15 Days, Weather in Grantfork Today
Current weather conditions and 15 day weather forecast for Grantfork, 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 Grantfork
| 07 May 2026 Thursday 6.1 ° C / 43°F  Clear |
Feels Like : 4.4 ° C / 40°F Humidity : % 85 Pressure : 1018 mb Wind Speed : 7.9 kmph / 4.9 miles from N  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Grantfork, IL, USA
Weather Forecast for next 15 Days for Grantfork 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 Grantfork, 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 May 2026 Thursday | Sunny |
5.2 ° C (41.4°F) |
18 ° C (64.4°F) |
11.8 ° C (53.2°F) |
% 61 | 0% | 7.1 | Sunrise:05:54 AM Sunset: 07:57 PM |
Moonrise:12:48 AM Moonset: 10:04 AM Moon Phase ( Waning Gibbous ) |
|
| 08 May 2026 Friday |  Moderate rain |
8.2 ° C (46.7°F) |
23.7 ° C (74.7°F) |
14.5 ° C (58.1°F) |
% 76 | 88% | 0.1 | Sunrise:05:53 AM Sunset: 07:58 PM |
Moonrise:01:25 AM Moonset: 11:07 AM Moon Phase ( Waning Gibbous ) |
|
| 09 May 2026 Saturday | Sunny |
10.6 ° C (51.1°F) |
24.1 ° C (75.4°F) |
17.2 ° C (62.9°F) |
% 73 | 0% | 5 | Sunrise:05:52 AM Sunset: 07:59 PM |
Moonrise:01:56 AM Moonset: 12:11 PM Moon Phase ( Last Quarter ) |
|
| 10 May 2026 Sunday |  Overcast |
9.6 ° C (49.2°F) |
17.3 ° C (63.1°F) |
14 ° C (57.3°F) |
% 72 | 0% | 3 | Sunrise:05:51 AM Sunset: 08:00 PM |
Moonrise:02:23 AM Moonset: 01:15 PM Moon Phase ( Waning Crescent ) |
|
| 11 May 2026 Monday | Sunny |
6.2 ° C (43.1°F) |
16.7 ° C (62.1°F) |
10.6 ° C (51.1°F) |
% 64 | 0% | 4 | Sunrise:05:50 AM Sunset: 08:01 PM |
Moonrise:02:47 AM Moonset: 02:20 PM Moon Phase ( Waning Crescent ) |
|
| 12 May 2026 Tuesday | Sunny |
7.8 ° C (46°F) |
20.5 ° C (68.9°F) |
14.2 ° C (57.5°F) |
% 67 | 0% | 4 | Sunrise:05:49 AM Sunset: 08:02 PM |
Moonrise:03:11 AM Moonset: 03:28 PM Moon Phase ( Waning Crescent ) |
|
| 13 May 2026 Wednesday |  Patchy rain nearby |
14.1 ° C (57.4°F) |
24.1 ° C (75.4°F) |
18.7 ° C (65.7°F) |
% 71 | 77% | 4 | Sunrise:05:49 AM Sunset: 08:02 PM |
Moonrise:03:36 AM Moonset: 04:38 PM Moon Phase ( Waning Crescent ) |
|
| 14 May 2026 Thursday | Sunny |
12.3 ° C (54.2°F) |
20.3 ° C (68.5°F) |
16.1 ° C (61°F) |
% 71 | 0% | 5 | Sunrise:05:48 AM Sunset: 08:03 PM |
Moonrise:04:02 AM Moonset: 05:52 PM Moon Phase ( Waning Crescent ) |
|
| 15 May 2026 Friday | Sunny |
8.9 ° C (48°F) |
21.6 ° C (70.8°F) |
15.1 ° C (59.2°F) |
% 67 | 0% | 5 | Sunrise:05:47 AM Sunset: 08:04 PM |
Moonrise:04:32 AM Moonset: 07:10 PM Moon Phase ( Waning Crescent ) |
|
| 16 May 2026 Saturday |  Partly Cloudy |
13 ° C (55.3°F) |
28.2 ° C (82.7°F) |
20 ° C (68.1°F) |
% 72 | 0% | 6 | Sunrise:05:46 AM Sunset: 08:05 PM |
Moonrise:05:10 AM Moonset: 08:30 PM Moon Phase ( New Moon ) |
|
| 17 May 2026 Sunday | Sunny |
18.2 ° C (64.8°F) |
27.9 ° C (82.2°F) |
22.9 ° C (73.2°F) |
% 76 | 0% | 6 | Sunrise:05:45 AM Sunset: 08:06 PM |
Moonrise:05:56 AM Moonset: 09:48 PM Moon Phase ( Waxing Crescent ) |
|
| 18 May 2026 Monday | Patchy rain nearby |
18.9 ° C (66°F) |
28.1 ° C (82.6°F) |
23.1 ° C (73.5°F) |
% 80 | 86% | 5 | Sunrise:05:44 AM Sunset: 08:07 PM |
Moonrise:06:54 AM Moonset: 10:57 PM Moon Phase ( Waxing Crescent ) |
|
| 19 May 2026 Tuesday |  Cloudy |
20.5 ° C (69°F) |
29.9 ° C (85.8°F) |
24.7 ° C (76.5°F) |
% 77 | 0% | 5 | Sunrise:05:43 AM Sunset: 08:08 PM |
Moonrise:08:03 AM Moonset: 11:54 PM Moon Phase ( Waxing Crescent ) |
|
| 20 May 2026 Wednesday | Patchy rain nearby |
20.4 ° C (68.7°F) |
30.9 ° C (87.7°F) |
24.5 ° C (76.1°F) |
% 83 | 89% | 5 | Sunrise:05:43 AM Sunset: 08:09 PM |
Moonrise:09:19 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
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