Weather forecast for 10 daysIdaho Falls, ID
Weather forecast for the weekend
Sunday Oct 18, 2026
- 66°F
- 30°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphNW 316°
- Humidity: 55%
- UV index: 4
- Sunrise: 7:46 am MDT
- Sunset: 6:40 pm MDT
- details ▼
Today, partly cloudy skies will persist, making for a mix of sun and clouds.
Temperature readings are anticipated to span from a high of an enjoyable 66.2°F to a low of a subzero 30.2°F.
Today, the predicted high of 66.2°F is expected to reflect September's average high of 73.6°F.
Sunrise will be at 7:46 am and sunset at 6:40 pm; the daylight will last for 10h and 54min.
Temperature readings are anticipated to span from a high of an enjoyable 66.2°F to a low of a subzero 30.2°F.
Today, the predicted high of 66.2°F is expected to reflect September's average high of 73.6°F.
Sunrise will be at 7:46 am and sunset at 6:40 pm; the daylight will last for 10h and 54min.
10-day overview
Daily temperatures
Warmest day: tomorrow 68°C.
Coldest day: Friday 48°C.
Coldest day: Friday 48°C.
Chance of precipitation
Highest chance: Friday 82%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 66°F
- 30°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphNW 316°
- Humidity: 55%
- UV index: 4
- Sunrise: 7:46 am MDT
- Sunset: 6:40 pm MDT
- details ▼
- Monday
- Oct 19, 2026
- 68°F
- 39°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 7mphW 280°
- Humidity: 55%
- UV index: 3
- Sunrise: 7:47 am MDT
- Sunset: 6:38 pm MDT
- details ▼
- Tuesday
- Oct 20, 2026
- 64°F
- 39°F
Partly Cloudy
- Precip. probability: 17%
- Precipitation: 0"
- Wind: 6mphE 90°
- Humidity: 69%
- UV index: 3
- Sunrise: 7:48 am MDT
- Sunset: 6:36 pm MDT
- details ▼
- Wednesday
- Oct 21, 2026
- 66°F
- 41°F
Partly Cloudy
- Precip. probability: 21%
- Precipitation: 0"
- Wind: 6mphW 261°
- Humidity: 70%
- UV index: 3
- Sunrise: 7:50 am MDT
- Sunset: 6:35 pm MDT
- details ▼
- Thursday
- Oct 22, 2026
- 64°F
- 43°F
PM Thunderstorms
- Precip. probability: 50%
- Precipitation: 0.35"
- Wind: 7mphS 174°
- Humidity: 71%
- UV index: 3
- Sunrise: 7:51 am MDT
- Sunset: 6:33 pm MDT
- details ▼
- Friday
- Oct 23, 2026
- 48°F
- 30°F
Rain
- Precip. probability: 82%
- Precipitation: 0.35"
- Wind: 15mphSW 216°
- Humidity: 93%
- UV index: 1
- Sunrise: 7:52 am MDT
- Sunset: 6:32 pm MDT
- details ▼
- Saturday
- Oct 24, 2026
- 50°F
- 30°F
Partly Cloudy
- Precip. probability: 11%
- Precipitation: 0"
- Wind: 9mphSW 216°
- Humidity: 82%
- UV index: 3
- Sunrise: 7:53 am MDT
- Sunset: 6:30 pm MDT
- details ▼
- Sunday
- Oct 25, 2026
- 57°F
- 32°F
Mostly Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 9mphSSW 201°
- Humidity: 71%
- UV index: 3
- Sunrise: 7:55 am MDT
- Sunset: 6:29 pm MDT
- details ▼
- Monday
- Oct 26, 2026
- 52°F
- 30°F
Partly Cloudy
- Precip. probability: 18%
- Precipitation: 0"
- Wind: 8mphSSW 207°
- Humidity: 74%
- UV index: 3
- Sunrise: 7:56 am MDT
- Sunset: 6:27 pm MDT
- details ▼
- Tuesday
- Oct 27, 2026
- 50°F
- 30°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 11mphSW 219°
- Humidity: 79%
- UV index: 3
- Sunrise: 7:57 am MDT
- Sunset: 6:26 pm MDT
- details ▼
The weather will be unstable for the next ten days, and a mix of overcast, bright, storm-filled and damp weather is expected.
With light precipitation of 0.35", rainfall is predicted for Thursday and Friday.
Temperature differences will be noticeable throughout the forecast window. The temperature is expected to swing from 48.2°F up to 68°F, while the variation in nighttime lows will be also notably wide, as the lowest temperatures will be recorded between 30.2°F and 42.8°F.
Expect the warmest day on Monday, with temperatures peaking at 68°F; expect the coldest day on Friday with a high of 48.2°F.
With light precipitation of 0.35", rainfall is predicted for Thursday and Friday.
Temperature differences will be noticeable throughout the forecast window. The temperature is expected to swing from 48.2°F up to 68°F, while the variation in nighttime lows will be also notably wide, as the lowest temperatures will be recorded between 30.2°F and 42.8°F.
Expect the warmest day on Monday, with temperatures peaking at 68°F; expect the coldest day on Friday with a high of 48.2°F.
Updated: Oct 18, 2026 @ 09:30:23 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Today, intermittent cloud cover is expected, allowing for some sunshine.
Today, the maximum temperature will be 66.2°F, while the minimum temperature will be 30.2°F.
The maximum temperature today will be significantly higher than the average highest temperature of 55.6°F in October. The lowest temperature will be slightly cooler than the average low of 37.2°F.
The maximum temperature today will be significantly higher than the average highest temperature of 55.6°F in October. The lowest temperature will be slightly cooler than the average low of 37.2°F.
On Sunday, in Idaho Falls, sunrise will be at 7:46 am and sunset at 6:40 pm (MDT).
In Idaho Falls, the length of the day today will be 10h and 54min.
