Siskiyou County Airport Weather Forecast 15 Days, Weather in KSIY Today
Current weather conditions and 15 day weather forecast for Siskiyou County Airport, 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 Siskiyou County Airport
| 05 December 2025 Friday 4.4 ° C / 39.9°F  Clear |
Feels Like : 4 ° C / 39.3°F Humidity : % 86 Pressure : 1024 mb Wind Speed : 3.6 kmph / 2.2 miles from SW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Siskiyou County Airport, CA, USA
Weather Forecast for next 15 Days for Siskiyou County Airport 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 Siskiyou County Airport, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 05 December 2025 Friday |  Partly Cloudy |
1.6 ° C (34.9°F) |
11.1 ° C (52°F) |
6 ° C (42.8°F) |
% 74 | 0% | 0.2 | Sunrise:07:22 AM Sunset: 04:39 PM |
Moonrise:05:14 PM Moonset: 08:38 AM Moon Phase ( Full Moon ) |
|
| 06 December 2025 Saturday |  Mist |
2.1 ° C (35.8°F) |
7.3 ° C (45.1°F) |
5.8 ° C (42.4°F) |
% 82 | 0% | 0.2 | Sunrise:07:23 AM Sunset: 04:39 PM |
Moonrise:06:27 PM Moonset: 09:41 AM Moon Phase ( Waning Gibbous ) |
|
| 07 December 2025 Sunday |  Cloudy |
-0.5 ° C (31.1°F) |
8.8 ° C (47.8°F) |
4.8 ° C (40.6°F) |
% 77 | 0% | 0.3 | Sunrise:07:24 AM Sunset: 04:39 PM |
Moonrise:07:46 PM Moonset: 10:30 AM Moon Phase ( Waning Gibbous ) |
|
| 08 December 2025 Monday | Partly Cloudy |
2.8 ° C (37°F) |
8.6 ° C (47.5°F) |
5.9 ° C (42.5°F) |
% 80 | 0% | 0.3 | Sunrise:07:25 AM Sunset: 04:39 PM |
Moonrise:09:02 PM Moonset: 11:07 AM Moon Phase ( Waning Gibbous ) |
|
| 09 December 2025 Tuesday |  Patchy rain nearby |
7.8 ° C (46.1°F) |
10.7 ° C (51.3°F) |
9.6 ° C (49.3°F) |
% 80 | 89% | 0 | Sunrise:07:26 AM Sunset: 04:39 PM |
Moonrise:10:14 PM Moonset: 11:36 AM Moon Phase ( Waning Gibbous ) |
|
| 10 December 2025 Wednesday | Patchy rain nearby |
4.2 ° C (39.6°F) |
12.3 ° C (54.1°F) |
9.1 ° C (48.4°F) |
% 74 | 72% | 2 | Sunrise:07:27 AM Sunset: 04:39 PM |
Moonrise:11:23 PM Moonset: 12:00 PM Moon Phase ( Waning Gibbous ) |
|
| 11 December 2025 Thursday | Patchy rain nearby |
4.6 ° C (40.4°F) |
6.9 ° C (44.4°F) |
6.5 ° C (43.7°F) |
% 83 | 83% | 2 | Sunrise:07:28 AM Sunset: 04:39 PM |
Moonrise:No moonrise Moonset: 12:20 PM Moon Phase ( Last Quarter ) |
|
| 12 December 2025 Friday | Patchy rain nearby |
7.7 ° C (45.9°F) |
10.1 ° C (50.1°F) |
9.2 ° C (48.6°F) |
% 81 | 86% | 2 | Sunrise:07:29 AM Sunset: 04:39 PM |
Moonrise:12:27 AM Moonset: 12:39 PM Moon Phase ( Waning Crescent ) |
|
| 13 December 2025 Saturday | Patchy rain nearby |
0.1 ° C (32.1°F) |
4.6 ° C (40.3°F) |
3.5 ° C (38.3°F) |
% 82 | 86% | 1 | Sunrise:07:29 AM Sunset: 04:39 PM |
Moonrise:01:30 AM Moonset: 12:58 PM Moon Phase ( Waning Crescent ) |
|
| 14 December 2025 Sunday |  Moderate or heavy snow in area with thunder |
-2.3 ° C (27.8°F) |
2.2 ° C (36°F) |
-0.5 ° C (31.1°F) |
% 82 | 79% | 1 | Sunrise:07:30 AM Sunset: 04:40 PM |
Moonrise:02:32 AM Moonset: 01:18 PM Moon Phase ( Waning Crescent ) |
|
| 15 December 2025 Monday |  Heavy snow |
-3.9 ° C (25.1°F) |
0.1 ° C (32.3°F) |
-1.7 ° C (28.9°F) |
% 92 | 72% | 1 | Sunrise:07:31 AM Sunset: 04:40 PM |
Moonrise:03:35 AM Moonset: 01:41 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday |  Moderate or heavy snow showers |
-9.5 ° C (14.8°F) |
1.4 ° C (34.5°F) |
-4.6 ° C (23.7°F) |
% 89 | 81% | 1 | Sunrise:07:31 AM Sunset: 04:40 PM |
Moonrise:04:38 AM Moonset: 02:07 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday | Moderate or heavy snow showers |
-8.6 ° C (16.5°F) |
-2.5 ° C (27.5°F) |
-4.9 ° C (23.1°F) |
% 92 | 64% | 1 | Sunrise:07:32 AM Sunset: 04:40 PM |
Moonrise:05:42 AM Moonset: 02:40 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday | Heavy snow |
-2.8 ° C (26.9°F) |
-1 ° C (30.2°F) |
-1.8 ° C (28.7°F) |
% 96 | 86% | 1 | Sunrise:07:33 AM Sunset: 04:41 PM |
Moonrise:06:44 AM Moonset: 03:20 PM Moon Phase ( Waning Crescent ) |
|
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