Byron Weather Forecast 15 Days, Weather in Byron Today
Current weather conditions and 15 day weather forecast for Byron, 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 Byron
| 18 December 2025 Thursday 5.2 ° C / 41.4°F  Mist |
Feels Like : 0.4 ° C / 32.6°F Humidity : % 100 Pressure : 991 mb Wind Speed : 29.5 kmph / 18.3 miles from S  Visibility : 4.8 km Precipitation (rainfall) : 0.09 mm Cloud (%) : 100 |
15 day weather forecast for Byron, WI, USA
Weather Forecast for next 15 Days for Byron 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 Byron, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 18 December 2025 Thursday |  Moderate rain |
-7 ° C (19.4°F) |
9.4 ° C (48.9°F) |
2.8 ° C (37°F) |
% 88 | 88% | 0 | Sunrise:07:23 AM Sunset: 04:18 PM |
Moonrise:06:31 AM Moonset: 02:51 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday |  Partly Cloudy |
-13 ° C (8.6°F) |
-9.2 ° C (15.4°F) |
-10.6 ° C (13°F) |
% 77 | 0% | 0.2 | Sunrise:07:24 AM Sunset: 04:18 PM |
Moonrise:07:30 AM Moonset: 03:38 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday |  Moderate or heavy snow showers |
-8.7 ° C (16.3°F) |
-1.4 ° C (29.5°F) |
-4.5 ° C (23.8°F) |
% 87 | 81% | 0.2 | Sunrise:07:25 AM Sunset: 04:19 PM |
Moonrise:08:21 AM Moonset: 04:34 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday |  Sunny |
-12 ° C (10.5°F) |
-3.3 ° C (26°F) |
-7.3 ° C (18.9°F) |
% 85 | 0% | 0.3 | Sunrise:07:25 AM Sunset: 04:19 PM |
Moonrise:09:04 AM Moonset: 05:38 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday |  Light freezing rain |
-14.3 ° C (6.2°F) |
-2.3 ° C (27.9°F) |
-7.6 ° C (18.3°F) |
% 86 | 61% | 0 | Sunrise:07:26 AM Sunset: 04:20 PM |
Moonrise:09:39 AM Moonset: 06:45 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Fog |
-0.8 ° C (30.5°F) |
0.9 ° C (33.7°F) |
0.1 ° C (32.1°F) |
% 90 | 0% | 1 | Sunrise:07:26 AM Sunset: 04:21 PM |
Moonrise:10:07 AM Moonset: 07:55 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday |  Patchy rain nearby |
-0.9 ° C (30.4°F) |
1.6 ° C (34.9°F) |
0.9 ° C (33.7°F) |
% 97 | 83% | 1 | Sunrise:07:26 AM Sunset: 04:21 PM |
Moonrise:10:30 AM Moonset: 09:04 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Fog |
-1.5 ° C (29.4°F) |
2.8 ° C (37°F) |
1.1 ° C (33.9°F) |
% 91 | 0% | 1 | Sunrise:07:27 AM Sunset: 04:22 PM |
Moonrise:10:51 AM Moonset: 10:14 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Sunny |
-5.9 ° C (21.4°F) |
-1.2 ° C (29.9°F) |
-2.9 ° C (26.9°F) |
% 71 | 0% | 2 | Sunrise:07:27 AM Sunset: 04:22 PM |
Moonrise:11:10 AM Moonset: 11:25 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Partly Cloudy |
-7.2 ° C (19°F) |
0.7 ° C (33.2°F) |
-4.8 ° C (23.3°F) |
% 72 | 0% | 2 | Sunrise:07:27 AM Sunset: 04:23 PM |
Moonrise:11:30 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Partly Cloudy |
-11.1 ° C (11.9°F) |
-8.7 ° C (16.3°F) |
-9.5 ° C (14.9°F) |
% 67 | 0% | 2 | Sunrise:07:28 AM Sunset: 04:24 PM |
Moonrise:11:51 AM Moonset: 12:37 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Sunny |
-11.9 ° C (10.6°F) |
-6.7 ° C (19.9°F) |
-9.8 ° C (14.3°F) |
% 69 | 0% | 2 | Sunrise:07:28 AM Sunset: 04:25 PM |
Moonrise:12:15 PM Moonset: 01:54 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Sunny |
-10.1 ° C (13.9°F) |
-4.7 ° C (23.5°F) |
-7.8 ° C (17.9°F) |
% 63 | 0% | 2 | Sunrise:07:28 AM Sunset: 04:26 PM |
Moonrise:12:46 PM Moonset: 03:14 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Sunny |
-7.5 ° C (18.5°F) |
-0.9 ° C (30.4°F) |
-4.9 ° C (23.1°F) |
% 43 | 0% | 2 | Sunrise:07:28 AM Sunset: 04:26 PM |
Moonrise:01:26 PM Moonset: 04:36 AM Moon Phase ( Waxing Gibbous ) |
|
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