Weather forecast for tomorrowAmmon, ID

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 66°F
  • 34°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphW 269°
  • Humidity: 50%
  • UV index: 4
  • Sunrise: 7:45 am MDT
  • Sunset: 6:39 pm MDT
  • ▼
Tomorrow, on Sunday, expect a partly sunny afternoon with variable cloud cover.
Temperature readings are forecasted to span from a high of a comfortable 66.2°F to a low of an icy 33.8°F.
The temperature of 66.2°F aligns more with what is typical in September than what is normal in October.
Sunrise will be at 7:45 am and sunset at 6:39 pm; tomorrow's daylight will last for 10h and 54min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 64°C.
Coldest hour: 6 am 36°C.

Chance of precipitation

Highest chance: 3 am - 6 am 2%.

Hourly weather forecast

  • 12 am
  • 43°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphSSE 153°
  • Humidity: 68%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 39°F
  • Feels like:
    36°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphESE 106°
  • Humidity: 74%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 37°F
  • Feels like:
    34°F
Mostly Clear
Mostly Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphESE 123°
  • Humidity: 75%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 36°F
  • Feels like:
    30°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphESE 107°
  • Humidity: 76%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:45 am
  • 8 am
  • 34°F
  • Feels like:
    28°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphESE 102°
  • Humidity: 80%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 43°F
  • Feels like:
    41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNNE 15°
  • Humidity: 63%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 55°F
  • Feels like:
    55°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphWNW 294°
  • Humidity: 43%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 63°F
  • Feels like:
    63°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphW 276°
  • Humidity: 33%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 64°F
  • Feels like:
    64°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphWSW 245°
  • Humidity: 31%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 63°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSSW 199°
  • Humidity: 39%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:39 pm
  • 8 pm
  • 54°F
  • Feels like:
    52°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSE 131°
  • Humidity: 56%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 46°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphSE 137°
  • Humidity: 67%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, a combination of cloudy and clear weather is anticipated.
The temperature will vary between a minimum of 33.8°F and a maximum of 64.4°F. The warmest part of the day will be from 3 pm to 5 pm.
The maximum temperature will align more closely with September's average high of 73.6°F than with October's 55.6°F. The lowest temperature is consistent with October's typical minimum of 37.2°F.
Updated: Oct 17, 2026 @ 21:55:58 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, expect a partly sunny afternoon with variable cloud cover.

Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 33.8°F.
The maximum temperature tomorrow will be uncommonly higher than the average highest temperature of 55.6°F in October. The lowest temperature tomorrow will be in line with the average low temperature.

On Sunday, in Ammon, sunrise will be at 7:45 am and sunset at 6:39 pm (MDT).

In Ammon, the length of the day tomorrow will be 10h and 54min.