Weather forecast for tomorrowLewistown, MT
Weather forecast for tomorrow
Monday Oct 19, 2026
- 70°F
- 39°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 12mphSSW 212°
- Humidity: 39%
- UV index: 3
- Sunrise: 7:42 am MDT
- Sunset: 6:23 pm MDT
- details ▼
On Monday, in Lewistown, skies are expected to be clear and full of sunshine.
Dramatic temperature shifts from a high of a delightful 69.8°F to a low of an icy 39.2°F are forecasted.
Expect a warmer feel as the forecasted high matches September's 67.5°F, rather than October's average of 52.2°F.
Sunrise will be at 7:42 am and sunset at 6:23 pm; tomorrow's daylight will last for 10h and 41min.
Dramatic temperature shifts from a high of a delightful 69.8°F to a low of an icy 39.2°F are forecasted.
Expect a warmer feel as the forecasted high matches September's 67.5°F, rather than October's average of 52.2°F.
Sunrise will be at 7:42 am and sunset at 6:23 pm; tomorrow's daylight will last for 10h and 41min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 70°C.
Coldest hour: 6 am 39°C.
Coldest hour: 6 am 39°C.
Chance of precipitation
Highest chance: 3 am - 6 am 2%.
Hourly weather forecast
- 12 am
- 45°F
- Feels like:39°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphSE 124°
- Humidity: 55%
- Pressure: 30.06"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 41°F
- Feels like:37°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 7mphSE 135°
- Humidity: 59%
- Pressure: 30.03"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 39°F
- Feels like:36°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 7mphSSE 163°
- Humidity: 64%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 39°F
- Feels like:36°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 6mphS 180°
- Humidity: 65%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:42 am
- 8 am
- 39°F
- Feels like:36°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphS 183°
- Humidity: 65%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 52°F
- Feels like:50°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphSSW 201°
- Humidity: 48%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 12 pm
- 64°F
- Feels like:64°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphSW 228°
- Humidity: 32%
- Pressure: 29.83"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 2 pm
- 68°F
- Feels like:68°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 11mphSW 235°
- Humidity: 24%
- Pressure: 29.8"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 68°F
- Feels like:68°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 8mphSW 231°
- Humidity: 25%
- Pressure: 29.8"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 63°F
- Feels like:63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphS 190°
- Humidity: 34%
- Pressure: 29.8"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:23 pm
- 8 pm
- 54°F
- Feels like:52°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphSSE 159°
- Humidity: 41%
- Pressure: 29.85"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 50°F
- Feels like:48°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphSSE 162°
- Humidity: 47%
- Pressure: 29.85"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, primarily mostly clear and occasionally overcast weather is anticipated.
The temperature will vary between the lowest temperature of 39.2°F and the highest temperature of 69.8°F. The warmest part of the day is expected around 3 pm.
The maximum temperature will align more closely with September's average high of 67.5°F than with October's 52.2°F. The nighttime low will be a couple of degrees higher than the typical October minimum temperature of 35.1°F.
The temperature will vary between the lowest temperature of 39.2°F and the highest temperature of 69.8°F. The warmest part of the day is expected around 3 pm.
The maximum temperature will align more closely with September's average high of 67.5°F than with October's 52.2°F. The nighttime low will be a couple of degrees higher than the typical October minimum temperature of 35.1°F.
Updated: Oct 18, 2026 @ 16:27:14 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
Tomorrow, in Lewistown, sunny conditions are expected to continue.
Tomorrow, the highest temperature will be 69.8°F, while the lowest temperature will be 39.2°F.
The highest temperature will be notably higher than the average maximum of 52.2°F in October. The lowest temperature will be slightly warmer than the average low of 35.1°F.
The highest temperature will be notably higher than the average maximum of 52.2°F in October. The lowest temperature will be slightly warmer than the average low of 35.1°F.
On Monday, in Lewistown, sunrise will be at 7:42 am and sunset at 6:23 pm (MDT).
In Lewistown, tomorrow, there will be 10h and 41min of daylight.
