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Weather in Idaho Falls, Idaho for December 2025

Your guide to Idaho Falls weather in December - trends and predictions

    Official Weather Alert ⚠️

  • Winter Weather Advisory - See hour by hour.

    • Snow Forecast ❄️

  • Idaho Falls typically experiences moderate snowfall in December, with an average of 9 snowy days.
    According to Idaho Falls snow forecast for December 2025, 1 snowy day is expected until the end of the month at Wednesday, December 31.

    • Temperatures

  • So far, December 2025 in Idaho Falls is slightly warmer than the historical average by 0.9 °F.

  • The forecast for the next days in Idaho Falls predicts temperatures to be around 7 °F, close to the historical average.

  • In general, the average temperature in Idaho Falls at the beginning of December is 0.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 5.4 °F by the end of December.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
20
Dry days
Average rainy days
2
Rainy days
Average snowy days
9
Snow days
Average temperatures
1°/-5°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
90 %
Avg humidity

Idaho Falls Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
-1°
2
Overcast
2°
3
Overcast
2°
4
Overcast
-0°
5
Overcast
2°
6
Overcast
1°
7
Overcast
0°
8
Light freezing rain
2°
9
Overcast
2°
10
Overcast
2°
11
Overcast
3°
12
Overcast
3°
13
Light freezing rain
1°
14
Moderate or heavy snow showers
3°
15
Moderate or heavy snow showers
3°
16
Light freezing rain
3°
17
Light freezing rain
4°
18
Overcast
2°
19
Overcast
2°
20
Cloudy
0°
21
Weather Alert Moderate rain
5°
22
Moderate rain
6°
23
Overcast
10°
24
Patchy rain possible
11°
25
Patchy rain possible
8°
26
Patchy rain possible
7°
27
Patchy rain possible
10°
28
Patchy rain possible
4°
29
Partly cloudy
3°
30
Sunny
3°
31
Partly cloudy
3°

Temperatures trend during December in Idaho Falls

See the weather trend as well as the moving average line

December weather in Idaho Falls day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Overcast
Overcast
 -1° /-9° 0 mm 0 cm
Dec. 2 Overcast
Overcast
 2° /-6° 6.4 mm 4.6 cm
Dec. 3 Overcast
Overcast
 2° /-9° 0 mm 0 cm
Dec. 4 Overcast
Overcast
 0° /-6° 0 mm 0 cm
Dec. 5 Overcast
Overcast
 2° /-6° 1 mm 0.7 cm
Dec. 6 Overcast
Overcast
 1° /-5° 0 mm 0 cm
Dec. 7 Overcast
Overcast
 0° /-5° 0 mm 0 cm
Dec. 8 Light freezing rain
Light freezing rain
 2° /-2° 0.3 mm 0 cm
Dec. 9 Overcast
Overcast
 2° /-3° 0 mm 0 cm
Dec. 10 Overcast
Overcast
 2° /-2° 0 mm 0 cm
Dec. 11 Overcast
Overcast
 3° /-4° 0 mm 0 cm
Dec. 12 Overcast
Overcast
 3° /-2° 0 mm 0 cm
Dec. 13 Light freezing rain
Light freezing rain
 1° /-4° 0.1 mm 0 cm
Dec. 14 Moderate or heavy snow showers
Moderate or heavy snow showers
 3° /-4° 12.3 mm 7.7 cm
Dec. 15 Moderate or heavy snow showers
Moderate or heavy snow showers
 3° /-6° 2.1 mm 1.4 cm
Dec. 16 Light freezing rain
Light freezing rain
 3° /-2° 1.9 mm 0.4 cm
Dec. 17 Light freezing rain
Light freezing rain
 4° /-2° 0.3 mm 0 cm
Dec. 18 Overcast
Overcast
 2° /-3° 0.7 mm 0 cm
Dec. 19 Overcast
Overcast
 2° /-2° 0 mm 0 cm
Dec. 20 Cloudy
Cloudy
 0° /-6° 0 mm 0 cm
Dec. 21 Moderate rain
Moderate rain
 5° /-1° 11.1 mm 0 cm
Dec. 22 Moderate rain
Moderate rain
 6° /4° 5.9 mm 0 cm
Dec. 23 Overcast
Overcast
 10° /3° 0 mm 0 cm
Dec. 24 Patchy rain possible
Patchy rain possible
 11° /4° 3.3 mm 0 cm
Dec. 25 Patchy rain possible
Patchy rain possible
 8° /1° 0.8 mm 0 cm
Dec. 26 Patchy rain possible
Patchy rain possible
 7° /2° 2.8 mm 0 cm
Dec. 27 Patchy rain possible
Patchy rain possible
 10° /1° 0.9 mm 0 cm
Dec. 28 Patchy rain possible
Patchy rain possible
 4° /3° 1.4 mm 0 cm
Dec. 29 Partly cloudy
Partly cloudy
 3° /0° 0 mm 0 cm
Dec. 30 Sunny
Sunny
 3° /-2° 0 mm 0 cm
Dec. 31 Partly cloudy
Partly cloudy
 3° /-1° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Idaho Falls in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Idaho Falls forecast closer to your planned date for the most up-to-date weather information.
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Idaho Falls in December - FAQ

What are the expected maximum and minimum temperatures in Idaho Falls during December?
Brace for cold days with temperatures not exceeding 1° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Idaho Falls during December?
Moderate rainfall is anticipated in Idaho Falls during December, with a total of 81.8 mm spread over approximately 2 days. Considering plans for rainy days is advisable.
Will it snow in Idaho Falls in December 2025?
Idaho Falls experiences an average snowfall of 45.35 cm during December, occurring over 9 days.
What are the typical wind conditions in Idaho Falls during December?
The average wind speed in Idaho Falls during December is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

Idaho Falls snow forecast December 2025

Track daily snowfall levels and discover Idaho Falls’s snowy potential this December ❄️
On average, Idaho Falls sees 9 snowy days during December, with approximately 45.4 cm of total snowfall.

December rainfall patterns in Idaho Falls

Explore the daily rainfall trends and prepare for Idaho Fallss December weather 💧
Typically, Idaho Falls has 2 rainy days in December with a total of 81.8 mm of rainfall.

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Location coordinates Where is Idaho Falls?

Get accurate weather forecasts for Idaho Falls, located at latitude 43.467 and longitude -112.034. Stay updated with localized weather information tailored for Idaho Falls.

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