Weather forecast for tomorrowBoulder, MT
Weather forecast for tomorrow
Monday Oct 19, 2026
- 66°F
- 36°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 9mphS 179°
- Humidity: 48%
- UV index: 3
- Sunrise: 7:51 am MDT
- Sunset: 6:35 pm MDT
- details ▼
Tomorrow, sunny skies are also in store, with excellent visibility.
Temperature measurements will peak at an enjoyable 66.2°F, with a considerable drop to a low of a cold 35.6°F.
The expected high of 66.2°F appears seasonally off, better matching September's typical values.
Sunrise will be at 7:51 am and sunset at 6:35 pm; tomorrow's daylight will last for 10h and 44min.
Temperature measurements will peak at an enjoyable 66.2°F, with a considerable drop to a low of a cold 35.6°F.
The expected high of 66.2°F appears seasonally off, better matching September's typical values.
Sunrise will be at 7:51 am and sunset at 6:35 pm; tomorrow's daylight will last for 10h and 44min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 64°C.
Coldest period: 3 am - 9 am 37°C.
Coldest period: 3 am - 9 am 37°C.
Chance of precipitation
Highest chance: 12 am - 6 am 2%.
Hourly weather forecast
- 12 am
- 41°F
- Feels like:39°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 3mphSW 216°
- Humidity: 67%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 39°F
- Feels like:37°F
Mostly Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 3mphSSW 211°
- Humidity: 72%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 37°F
- Feels like:36°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 3mphSSW 204°
- Humidity: 73%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 37°F
- Feels like:37°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 3mphSSW 193°
- Humidity: 74%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:51 am
- 8 am
- 34°F
- Feels like:30°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphSSW 192°
- Humidity: 78%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 43°F
- Feels like:43°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphSSW 201°
- Humidity: 65%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 12 pm
- 55°F
- Feels like:54°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphS 171°
- Humidity: 41%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 2 pm
- 61°F
- Feels like:61°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 8mphSSE 167°
- Humidity: 33%
- Pressure: 29.83"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 64°F
- Feels like:64°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphS 172°
- Humidity: 28%
- Pressure: 29.8"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 61°F
- Feels like:61°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphSSE 166°
- Humidity: 32%
- Pressure: 29.8"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:35 pm
- 8 pm
- 54°F
- Feels like:54°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphSSW 205°
- Humidity: 41%
- Pressure: 29.85"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 48°F
- Feels like:48°F
Mostly Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 3mphSW 221°
- Humidity: 49%
- Pressure: 29.85"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Monday, a combination of clear and cloudy weather is anticipated.
The temperature will vary between the lowest temperature of 33.8°F and the highest temperature of 64.4°F. The warmest part of the day will be from 3 pm to 5 pm.
The highest temperature is more close to September's average maximum of 67.5°F than October's usual of 50.9°F. Forecasts indicate a night temperature a few degrees higher than the usual October minimum of 31.3°F.
The temperature will vary between the lowest temperature of 33.8°F and the highest temperature of 64.4°F. The warmest part of the day will be from 3 pm to 5 pm.
The highest temperature is more close to September's average maximum of 67.5°F than October's usual of 50.9°F. Forecasts indicate a night temperature a few degrees higher than the usual October minimum of 31.3°F.
Updated: Oct 18, 2026 @ 09:42:01 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, clear skies and sunshine are anticipated.
Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 35.6°F.
The highest temperature will be significantly higher than the average maximum of 50.9°F in October. The lowest temperature will be moderately higher than the average low of 31.3°F.
The highest temperature will be significantly higher than the average maximum of 50.9°F in October. The lowest temperature will be moderately higher than the average low of 31.3°F.
On Monday, in Boulder, sunrise will be at 7:51 am and sunset at 6:35 pm (MDT).
In Boulder, the length of the day tomorrow will be 10h and 44min.
