Idaho Falls Weather Forecast 15 Days, Weather in Idaho Falls Today
Current weather conditions and 15 day weather forecast for Idaho Falls, 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 Idaho Falls
| 16 December 2025 Tuesday 10.6 ° C / 51.1°F  Sunny |
Feels Like : 7.3 ° C / 45.2°F Humidity : % 46 Pressure : 1018 mb Wind Speed : 30.6 kmph / 19 miles from SW  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Idaho Falls, ID, USA
Weather Forecast for next 15 Days for Idaho Falls 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 Idaho Falls, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 16 December 2025 Tuesday | Sunny |
-3.8 ° C (25.2°F) |
12.4 ° C (54.3°F) |
3.2 ° C (37.8°F) |
% 68 | 0% | 0.2 | Sunrise:07:55 AM Sunset: 04:53 PM |
Moonrise:05:00 AM Moonset: 02:19 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday |  Overcast |
-3.7 ° C (25.3°F) |
8.4 ° C (47.1°F) |
4.1 ° C (39.4°F) |
% 65 | 0% | 0.2 | Sunrise:07:56 AM Sunset: 04:53 PM |
Moonrise:06:05 AM Moonset: 02:50 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday |  Patchy moderate snow |
-3.8 ° C (25.2°F) |
0.5 ° C (32.9°F) |
-0.7 ° C (30.7°F) |
% 79 | 83% | 0.1 | Sunrise:07:57 AM Sunset: 04:54 PM |
Moonrise:07:08 AM Moonset: 03:29 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday | Overcast |
4.4 ° C (39.9°F) |
8.1 ° C (46.6°F) |
6.1 ° C (43°F) |
% 64 | 0% | 0.2 | Sunrise:07:57 AM Sunset: 04:54 PM |
Moonrise:08:06 AM Moonset: 04:17 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday |  Patchy rain nearby |
0.2 ° C (32.4°F) |
4.8 ° C (40.7°F) |
3.1 ° C (37.7°F) |
% 70 | 87% | 0 | Sunrise:07:58 AM Sunset: 04:54 PM |
Moonrise:08:57 AM Moonset: 05:14 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Patchy rain nearby |
-0.7 ° C (30.7°F) |
2.3 ° C (36.1°F) |
1.1 ° C (33.9°F) |
% 90 | 80% | 1 | Sunrise:07:58 AM Sunset: 04:55 PM |
Moonrise:09:40 AM Moonset: 06:17 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Patchy rain nearby |
0.6 ° C (33°F) |
4.7 ° C (40.4°F) |
3.3 ° C (37.9°F) |
% 70 | 73% | 1 | Sunrise:07:59 AM Sunset: 04:55 PM |
Moonrise:10:14 AM Moonset: 07:25 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday |  Partly Cloudy |
-1.2 ° C (29.8°F) |
2.9 ° C (37.2°F) |
0.4 ° C (32.8°F) |
% 85 | 0% | 2 | Sunrise:07:59 AM Sunset: 04:56 PM |
Moonrise:10:42 AM Moonset: 08:34 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Patchy rain nearby |
0.4 ° C (32.7°F) |
10.3 ° C (50.5°F) |
5.8 ° C (42.5°F) |
% 72 | 83% | 2 | Sunrise:08:00 AM Sunset: 04:57 PM |
Moonrise:11:06 AM Moonset: 09:44 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday |  Moderate rain |
1 ° C (33.8°F) |
5.5 ° C (41.8°F) |
4.4 ° C (39.8°F) |
% 72 | 73% | 1 | Sunrise:08:00 AM Sunset: 04:57 PM |
Moonrise:11:27 AM Moonset: 10:53 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Patchy moderate snow |
-2.6 ° C (27.3°F) |
2.9 ° C (37.2°F) |
0.8 ° C (33.5°F) |
% 65 | 83% | 1 | Sunrise:08:00 AM Sunset: 04:58 PM |
Moonrise:11:46 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Sunny |
-6.1 ° C (21°F) |
-0.2 ° C (31.6°F) |
-3.9 ° C (24.9°F) |
% 63 | 0% | 2 | Sunrise:08:01 AM Sunset: 04:59 PM |
Moonrise:12:05 PM Moonset: 12:03 AM Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Partly Cloudy |
-4.5 ° C (23.9°F) |
1.6 ° C (34.9°F) |
-1.8 ° C (28.7°F) |
% 58 | 0% | 2 | Sunrise:08:01 AM Sunset: 04:59 PM |
Moonrise:12:27 PM Moonset: 01:16 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Patchy rain nearby |
-0.9 ° C (30.4°F) |
2.5 ° C (36.5°F) |
1.2 ° C (34.1°F) |
% 88 | 85% | 1 | Sunrise:08:01 AM Sunset: 05:00 PM |
Moonrise:12:52 PM Moonset: 02:32 AM Moon Phase ( Waxing Gibbous ) |
|
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