Grantsburg Weather Forecast 15 Days, Weather in Grantsburg Today
Current weather conditions and 15 day weather forecast for Grantsburg, Wisconsin, 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 Grantsburg
| 09 August 2026 Sunday 29.2 ° C / 84.6°F  Sunny |
Feels Like : 26.1 ° C / 79°F Humidity : % 32 Pressure : 1011 mb Wind Speed : 17.6 kmph / 11 miles from W  Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Grantsburg, WI, USA
Weather Forecast for next 15 Days for Grantsburg 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 Grantsburg, Wisconsin 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 08 August 2026 Saturday | Sunny |
10.3 ° C (50.5°F) |
29.2 ° C (84.6°F) |
20.6 ° C (69.1°F) |
% 60 | 3% | 7.6 | Sunrise:06:02 AM Sunset: 08:30 PM |
Moonrise:12:28 AM Moonset: 05:27 PM Moon Phase ( Waning Crescent ) |
|
| 09 August 2026 Sunday | Sunny |
15.8 ° C (60.4°F) |
32.2 ° C (90°F) |
22.8 ° C (73°F) |
% 67 | 57% | 5 | Sunrise:06:03 AM Sunset: 08:28 PM |
Moonrise:01:24 AM Moonset: 06:29 PM Moon Phase ( Waning Crescent ) |
|
| 10 August 2026 Monday | Sunny |
13.9 ° C (57°F) |
32.6 ° C (90.6°F) |
23.2 ° C (73.7°F) |
% 50 | 36% | 6.3 | Sunrise:06:04 AM Sunset: 08:27 PM |
Moonrise:02:35 AM Moonset: 07:18 PM Moon Phase ( New Moon ) |
|
| 11 August 2026 Tuesday | Sunny |
14.8 ° C (58.7°F) |
32 ° C (89.5°F) |
22.6 ° C (72.7°F) |
% 64 | 57% | 5.6 | Sunrise:06:06 AM Sunset: 08:25 PM |
Moonrise:03:58 AM Moonset: 07:56 PM Moon Phase ( New Moon ) |
|
| 12 August 2026 Wednesday | Sunny |
14.3 ° C (57.7°F) |
28 ° C (82.4°F) |
18.9 ° C (66°F) |
% 63 | 57% | 5.5 | Sunrise:06:07 AM Sunset: 08:24 PM |
Moonrise:05:26 AM Moonset: 08:24 PM Moon Phase ( New Moon ) |
|
| 13 August 2026 Thursday | Sunny |
10.5 ° C (50.8°F) |
25.9 ° C (78.6°F) |
18.5 ° C (65.2°F) |
% 50 | 2% | 7 | Sunrise:06:08 AM Sunset: 08:22 PM |
Moonrise:06:53 AM Moonset: 08:48 PM Moon Phase ( New Moon ) |
|
| 14 August 2026 Friday | Sunny |
10.1 ° C (50.1°F) |
28.2 ° C (82.7°F) |
19.1 ° C (66.4°F) |
% 46 | 1% | 7 | Sunrise:06:09 AM Sunset: 08:21 PM |
Moonrise:08:17 AM Moonset: 09:08 PM Moon Phase ( Waxing Crescent ) |
|
| 15 August 2026 Saturday | Sunny |
15.3 ° C (59.5°F) |
31.4 ° C (88.4°F) |
22.7 ° C (72.8°F) |
% 47 | 3% | 8 | Sunrise:06:10 AM Sunset: 08:19 PM |
Moonrise:09:38 AM Moonset: 09:28 PM Moon Phase ( Waxing Crescent ) |
|
| 16 August 2026 Sunday |  Patchy rain nearby |
17.9 ° C (64.2°F) |
31.5 ° C (88.7°F) |
23 ° C (73.4°F) |
% 71 | 72% | 8 | Sunrise:06:12 AM Sunset: 08:17 PM |
Moonrise:10:57 AM Moonset: 09:48 PM Moon Phase ( Waxing Crescent ) |
|
| 17 August 2026 Monday | Sunny |
16 ° C (60.8°F) |
30.2 ° C (86.3°F) |
22.4 ° C (72.3°F) |
% 66 | 36% | 8 | Sunrise:06:13 AM Sunset: 08:16 PM |
Moonrise:12:14 PM Moonset: 10:10 PM Moon Phase ( Waxing Crescent ) |
|
| 18 August 2026 Tuesday | Patchy rain nearby |
14.1 ° C (57.3°F) |
33 ° C (91.5°F) |
21.1 ° C (70°F) |
% 67 | 75% | 7 | Sunrise:06:14 AM Sunset: 08:14 PM |
Moonrise:01:30 PM Moonset: 10:36 PM Moon Phase ( First Quarter ) |
|
| 19 August 2026 Wednesday |  Fog |
16.6 ° C (61.9°F) |
23.6 ° C (74.6°F) |
19.5 ° C (67.1°F) |
% 86 | 32% | 6 | Sunrise:06:15 AM Sunset: 08:12 PM |
Moonrise:02:43 PM Moonset: 11:09 PM Moon Phase ( First Quarter ) |
|
| 20 August 2026 Thursday | Sunny |
15.2 ° C (59.4°F) |
29.6 ° C (85.3°F) |
21.5 ° C (70.8°F) |
% 68 | 6% | 7 | Sunrise:06:17 AM Sunset: 08:11 PM |
Moonrise:03:50 PM Moonset: 11:49 PM Moon Phase ( First Quarter ) |
|
| 21 August 2026 Friday |  Partly Cloudy |
12.6 ° C (54.6°F) |
25 ° C (76.9°F) |
17.9 ° C (64.2°F) |
% 72 | 59% | 6 | Sunrise:06:18 AM Sunset: 08:09 PM |
Moonrise:04:50 PM Moonset: Does not set today Moon Phase ( First Quarter ) |
|
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