Janesville Weather Forecast 15 Days, Weather in Janesville Today
Current weather conditions and 15 day weather forecast for Janesville, California, 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 Janesville
| 20 December 2025 Saturday 7.1 ° C / 44.7°F  Clear |
Feels Like : 3.1 ° C / 37.5°F Humidity : % 75 Pressure : 1014 mb Wind Speed : 14 kmph / 8.7 miles from SW  Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Janesville, CA, USA
Weather Forecast for next 15 Days for Janesville 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 Janesville, California 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 20 December 2025 Saturday |  Patchy rain nearby |
2.8 ° C (37°F) |
6.8 ° C (44.2°F) |
5.5 ° C (41.9°F) |
% 90 | 85% | 0.3 | Sunrise:07:22 AM Sunset: 04:39 PM |
Moonrise:08:19 AM Moonset: 05:03 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday |  Heavy rain |
2.7 ° C (36.9°F) |
8.7 ° C (47.7°F) |
6.2 ° C (43.2°F) |
% 94 | 87% | 0.1 | Sunrise:07:23 AM Sunset: 04:39 PM |
Moonrise:09:02 AM Moonset: 06:05 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Heavy rain |
-0.7 ° C (30.7°F) |
6.3 ° C (43.3°F) |
4.2 ° C (39.5°F) |
% 91 | 89% | 0.3 | Sunrise:07:23 AM Sunset: 04:40 PM |
Moonrise:09:39 AM Moonset: 07:11 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Heavy snow |
-2.5 ° C (27.5°F) |
0.4 ° C (32.6°F) |
-0.4 ° C (31.3°F) |
% 94 | 68% | 0.1 | Sunrise:07:24 AM Sunset: 04:40 PM |
Moonrise:10:09 AM Moonset: 08:18 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday |  Light drizzle |
-2.8 ° C (27°F) |
-0.7 ° C (30.7°F) |
-0.3 ° C (31.4°F) |
% 86 | 88% | 0 | Sunrise:07:24 AM Sunset: 04:41 PM |
Moonrise:10:34 AM Moonset: 09:25 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday |  Moderate or heavy snow in area with thunder |
-3.8 ° C (25.1°F) |
-1.6 ° C (29.1°F) |
-2.8 ° C (26.9°F) |
% 97 | 71% | 1 | Sunrise:07:24 AM Sunset: 04:42 PM |
Moonrise:10:58 AM Moonset: 10:31 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday |  Moderate or heavy snow showers |
-6.7 ° C (19.9°F) |
-4.1 ° C (24.7°F) |
-4.4 ° C (24°F) |
% 95 | 81% | 1 | Sunrise:07:25 AM Sunset: 04:42 PM |
Moonrise:11:20 AM Moonset: 11:39 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday |  Light snow |
-10.7 ° C (12.8°F) |
-4.4 ° C (24.1°F) |
-7.1 ° C (19.1°F) |
% 97 | 86% | 1 | Sunrise:07:25 AM Sunset: 04:43 PM |
Moonrise:11:42 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday |  Freezing fog |
-15.6 ° C (3.8°F) |
-2.6 ° C (27.3°F) |
-8.7 ° C (16.3°F) |
% 95 | 0% | 1 | Sunrise:07:25 AM Sunset: 04:44 PM |
Moonrise:12:06 PM Moonset: 12:49 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Freezing fog |
-18 ° C (-0.4°F) |
-5.7 ° C (21.7°F) |
-10.9 ° C (12.4°F) |
% 95 | 0% | 1 | Sunrise:07:26 AM Sunset: 04:45 PM |
Moonrise:12:34 PM Moonset: 02:02 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday |  Mist |
-8.6 ° C (16.5°F) |
-2.9 ° C (26.9°F) |
-4.1 ° C (24.6°F) |
% 97 | 87% | 1 | Sunrise:07:26 AM Sunset: 04:45 PM |
Moonrise:01:09 PM Moonset: 03:20 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Freezing fog |
-3.9 ° C (24.9°F) |
-2.7 ° C (27.1°F) |
-2.9 ° C (26.7°F) |
% 97 | 0% | 1 | Sunrise:07:26 AM Sunset: 04:46 PM |
Moonrise:01:52 PM Moonset: 04:39 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 January 2026 Thursday | Mist |
-7.4 ° C (18.7°F) |
-3.2 ° C (26.3°F) |
-5.5 ° C (22.1°F) |
% 96 | 0% | 1 | Sunrise:07:26 AM Sunset: 04:47 PM |
Moonrise:02:48 PM Moonset: 05:57 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 January 2026 Friday | Freezing fog |
-11.4 ° C (11.4°F) |
-2.8 ° C (27°F) |
-6.6 ° C (20.1°F) |
% 96 | 0% | 1 | Sunrise:07:26 AM Sunset: 04:48 PM |
Moonrise:03:57 PM Moonset: 07:07 AM Moon Phase ( Waxing Gibbous ) |
|
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