Weather forecast for 10 daysBoulder, WY
Weather forecast for the weekend
Sunday Oct 18, 2026
- 59°F
- 27°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphWSW 243°
- Humidity: 44%
- UV index: 4
- Sunrise: 7:36 am MDT
- Sunset: 6:31 pm MDT
- details ▼
On Sunday, in Boulder, sunshine is also expected with little to no cloud cover.
Day and night temperatures will contrast sharply, from a maximum of a moderate 59°F to a minimum of a harsh 26.6°F.
Tomorrow, the weather pattern will resemble September more than October, with a forecast high of 59°F.
Sunrise will be at 7:36 am and sunset at 6:31 pm; tomorrow's daylight will last for 10h and 56min.
Day and night temperatures will contrast sharply, from a maximum of a moderate 59°F to a minimum of a harsh 26.6°F.
Tomorrow, the weather pattern will resemble September more than October, with a forecast high of 59°F.
Sunrise will be at 7:36 am and sunset at 6:31 pm; tomorrow's daylight will last for 10h and 56min.
10-day overview
Daily temperatures
Warmest day: today 63°C.
Coldest day: Saturday 24.10. 45°C.
Coldest day: Saturday 24.10. 45°C.
Chance of precipitation
Highest chance: Friday 75%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 25°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 6mphNW 323°
- Humidity: 60%
- UV index: 0
- Sunrise: 7:34 am MDT
- Sunset: 6:33 pm MDT
- details ▼
- Sunday
- Oct 18, 2026
- 59°F
- 27°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphWSW 243°
- Humidity: 44%
- UV index: 4
- Sunrise: 7:36 am MDT
- Sunset: 6:31 pm MDT
- details ▼
- Monday
- Oct 19, 2026
- 59°F
- 30°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 5mphSW 217°
- Humidity: 47%
- UV index: 4
- Sunrise: 7:37 am MDT
- Sunset: 6:30 pm MDT
- details ▼
- Tuesday
- Oct 20, 2026
- 61°F
- 32°F
Mostly Sunny
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 5mphWSW 248°
- Humidity: 57%
- UV index: 4
- Sunrise: 7:38 am MDT
- Sunset: 6:28 pm MDT
- details ▼
- Wednesday
- Oct 21, 2026
- 61°F
- 36°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 7mphSSE 167°
- Humidity: 63%
- UV index: 4
- Sunrise: 7:39 am MDT
- Sunset: 6:27 pm MDT
- details ▼
- Thursday
- Oct 22, 2026
- 57°F
- 39°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0.24"
- Wind: 8mphSE 141°
- Humidity: 71%
- UV index: 3
- Sunrise: 7:40 am MDT
- Sunset: 6:25 pm MDT
- details ▼
- Friday
- Oct 23, 2026
- 48°F
- 28°F
Rain
- Precip. probability: 75%
- Precipitation: 0.28"
- Wind: 10mphSSW 200°
- Humidity: 82%
- UV index: 2
- Sunrise: 7:42 am MDT
- Sunset: 6:24 pm MDT
- details ▼
- Saturday
- Oct 24, 2026
- 45°F
- 28°F
Partly Cloudy
- Precip. probability: 22%
- Precipitation: 0"
- Wind: 6mphWSW 250°
- Humidity: 71%
- UV index: 3
- Sunrise: 7:43 am MDT
- Sunset: 6:22 pm MDT
- details ▼
- Sunday
- Oct 25, 2026
- 50°F
- 30°F
Partly Cloudy
- Precip. probability: 14%
- Precipitation: 0"
- Wind: 7mphSSE 156°
- Humidity: 64%
- UV index: 3
- Sunrise: 7:44 am MDT
- Sunset: 6:21 pm MDT
- details ▼
- Monday
- Oct 26, 2026
- 52°F
- 28°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 7mphSSE 163°
- Humidity: 63%
- UV index: 3
- Sunrise: 7:45 am MDT
- Sunset: 6:19 pm MDT
- details ▼
Over the next ten days, a mix of mostly clear, dull and showery weather is anticipated.
Rainfall is forecasted for Thursday and Friday.
Temperature differences will be noticeable in the upcoming days. Forecast highs will fluctuate between 44.6°F and 60.8°F, while the variation in nighttime lows will be also notably wide, as the lowest temperatures will be recorded between 24.8°F and 39.2°F.
The warmest days will be Tuesday and Wednesday, with a maximum of 60.8°F; expect the coldest day on next Saturday with a high of 44.6°F.
Rainfall is forecasted for Thursday and Friday.
Temperature differences will be noticeable in the upcoming days. Forecast highs will fluctuate between 44.6°F and 60.8°F, while the variation in nighttime lows will be also notably wide, as the lowest temperatures will be recorded between 24.8°F and 39.2°F.
The warmest days will be Tuesday and Wednesday, with a maximum of 60.8°F; expect the coldest day on next Saturday with a high of 44.6°F.
Updated: Oct 17, 2026 @ 22:27:01 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
On Sunday, the outlook remains bright and sunny.
Tomorrow, the maximum temperature in Boulder will be 59°F, while the minimum temperature will be 26.6°F.
The highest temperature tomorrow will be moderately higher than the average maximum temperature in October. The lowest temperature will be also a couple of degrees lower than the average low of 32.4°F.
The highest temperature tomorrow will be moderately higher than the average maximum temperature in October. The lowest temperature will be also a couple of degrees lower than the average low of 32.4°F.
On Sunday, in Boulder, sunrise will be at 7:36 am and sunset at 6:31 pm (MDT).
In Boulder, the length of the day tomorrow will be 10h and 56min.
