Fairfield Weather Forecast 15 Days, Weather in Fairfield Today
Current weather conditions and 15 day weather forecast for Fairfield, Idaho, 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 Fairfield
| 19 December 2025 Friday 4.3 ° C / 39.7°F  Light rain |
Feels Like : 0.5 ° C / 33°F Humidity : % 87 Pressure : 1006 mb Wind Speed : 17.3 kmph / 10.7 miles from WSW  Visibility : 3.2 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for Fairfield, ID, USA
Weather Forecast for next 15 Days for Fairfield 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 Fairfield, Idaho 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 19 December 2025 Friday |  Moderate or heavy snow showers |
-12.6 ° C (9.3°F) |
0.9 ° C (33.6°F) |
-1.8 ° C (28.8°F) |
% 93 | 88% | 0.1 | Sunrise:08:08 AM Sunset: 05:05 PM |
Moonrise:08:17 AM Moonset: 04:28 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday |  Sunny |
-14.2 ° C (6.4°F) |
-4.6 ° C (23.7°F) |
-9.7 ° C (14.6°F) |
% 77 | 0% | 0.3 | Sunrise:08:08 AM Sunset: 05:05 PM |
Moonrise:09:08 AM Moonset: 05:25 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday |  Heavy snow |
-3.9 ° C (25°F) |
1.6 ° C (34.9°F) |
-0.5 ° C (31.1°F) |
% 96 | 78% | 0.1 | Sunrise:08:09 AM Sunset: 05:06 PM |
Moonrise:09:51 AM Moonset: 06:28 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Heavy snow |
-4.7 ° C (23.6°F) |
2 ° C (35.6°F) |
-0.2 ° C (31.7°F) |
% 98 | 80% | 0.3 | Sunrise:08:09 AM Sunset: 05:06 PM |
Moonrise:10:25 AM Moonset: 07:37 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Heavy snow |
-1.8 ° C (28.8°F) |
2.1 ° C (35.8°F) |
0.2 ° C (32.3°F) |
% 97 | 89% | 0 | Sunrise:08:10 AM Sunset: 05:07 PM |
Moonrise:10:53 AM Moonset: 08:46 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Moderate or heavy snow showers |
-0.9 ° C (30.4°F) |
1.7 ° C (35.1°F) |
0.5 ° C (32.9°F) |
% 90 | 53% | 1 | Sunrise:08:10 AM Sunset: 05:08 PM |
Moonrise:11:17 AM Moonset: 09:55 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday |  Partly Cloudy |
-5.4 ° C (22.3°F) |
-0.1 ° C (31.8°F) |
-2.7 ° C (27.2°F) |
% 87 | 0% | 2 | Sunrise:08:11 AM Sunset: 05:08 PM |
Moonrise:11:37 AM Moonset: 11:04 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Heavy snow |
-2.4 ° C (27.6°F) |
1 ° C (33.8°F) |
-0.5 ° C (31.1°F) |
% 95 | 66% | 1 | Sunrise:08:11 AM Sunset: 05:09 PM |
Moonrise:11:57 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Heavy snow |
-4.5 ° C (24°F) |
-1.3 ° C (29.7°F) |
-2.8 ° C (26.9°F) |
% 99 | 69% | 1 | Sunrise:08:11 AM Sunset: 05:10 PM |
Moonrise:12:16 PM Moonset: 12:15 AM Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Partly Cloudy |
-10.6 ° C (12.9°F) |
-4 ° C (24.8°F) |
-8.3 ° C (17.1°F) |
% 89 | 0% | 2 | Sunrise:08:11 AM Sunset: 05:10 PM |
Moonrise:12:38 PM Moonset: 01:28 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Heavy snow |
-13.9 ° C (6.9°F) |
-5 ° C (23°F) |
-8.3 ° C (17.1°F) |
% 93 | 64% | 1 | Sunrise:08:12 AM Sunset: 05:11 PM |
Moonrise:01:03 PM Moonset: 02:44 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Partly Cloudy |
-15 ° C (5°F) |
-8.2 ° C (17.3°F) |
-13 ° C (8.5°F) |
% 86 | 0% | 2 | Sunrise:08:12 AM Sunset: 05:12 PM |
Moonrise:01:35 PM Moonset: 04:04 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Sunny |
-18 ° C (-0.4°F) |
-9.7 ° C (14.6°F) |
-14.4 ° C (6°F) |
% 78 | 0% | 2 | Sunrise:08:12 AM Sunset: 05:13 PM |
Moonrise:02:15 PM Moonset: 05:27 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 January 2026 Thursday | Sunny |
-15.7 ° C (3.8°F) |
-8.4 ° C (16.9°F) |
-13.1 ° C (8.4°F) |
% 70 | 0% | 2 | Sunrise:08:12 AM Sunset: 05:14 PM |
Moonrise:03:10 PM Moonset: 06:46 AM Moon Phase ( Waxing Gibbous ) |
|
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