Weather forecast for 10 daysLongmont, CO

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 75°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphE 98°
  • Humidity: 30%
  • UV index: 4
  • Sunrise: 7:14 am MDT
  • Sunset: 6:16 pm MDT
  • ▼
On Sunday, in Longmont, golden sunshine will carry through the day.
A substantial temperature range, peaking at a temperate 75.2°F and bottoming out at a cold 39.2°F, is expected.
The warmer conditions bring a maximum of 75.2°F, more representative of September than October.
Sunrise will be at 7:14 am and sunset at 6:16 pm; tomorrow's daylight will last for 11h and 2min.

10-day overview

Daily temperatures

Maximum temperature: 75°C.
Coldest period: Saturday - Sunday 64°C.

Chance of precipitation

Highest chance: Saturday 24.10. 19%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 37°F
Mostly Clear
Mostly Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphW 276°
  • Humidity: 56%
  • UV index: 0
  • Sunrise: 7:13 am MDT
  • Sunset: 6:17 pm MDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 75°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphE 98°
  • Humidity: 30%
  • UV index: 4
  • Sunrise: 7:14 am MDT
  • Sunset: 6:16 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 39°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 4mphE 94°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:15 am MDT
  • Sunset: 6:14 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 73°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 4mphE 84°
  • Humidity: 45%
  • UV index: 4
  • Sunrise: 7:16 am MDT
  • Sunset: 6:13 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 75°F
  • 46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphSE 129°
  • Humidity: 41%
  • UV index: 4
  • Sunrise: 7:17 am MDT
  • Sunset: 6:12 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 73°F
  • 52°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 5mphENE 67°
  • Humidity: 46%
  • UV index: 3
  • Sunrise: 7:18 am MDT
  • Sunset: 6:10 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 73°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 11%
  • Precipitation: 0"
  • Wind: 8mphSSW 200°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:20 am MDT
  • Sunset: 6:09 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 64°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 7mphENE 66°
  • Humidity: 48%
  • UV index: 4
  • Sunrise: 7:21 am MDT
  • Sunset: 6:08 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 64°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 5mphE 79°
  • Humidity: 51%
  • UV index: 4
  • Sunrise: 7:22 am MDT
  • Sunset: 6:06 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 66°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 5mphENE 76°
  • Humidity: 44%
  • UV index: 4
  • Sunrise: 7:23 am MDT
  • Sunset: 6:05 pm MDT
  • ▼
Throughout the next ten days, a combination of gloomy and sun-filled weather is expected.
Rainfall is not anticipated in Longmont in the upcoming days.
In the upcoming days, the highest temperature will vary between 64.4°F and 75.2°F, while the lowest nightly temperature differences will be quite pronounced, as the overnight lows will vary from 37.4°F to 51.8°F.
Sunday and Wednesday, with the highest temperature of 75.2°F, will be the warmest days; with a maximum temperature of 64.4°F, next Saturday and Sunday will be the coldest days.
Updated: Oct 18, 2026 @ 02:24:38 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, mostly sunny and dry conditions will continue.

Tomorrow, the maximum temperature will be 75.2°F, while the minimum temperature will be 39.2°F.
The maximum temperature will be uncommonly higher than the average highest temperature of 61.5°F in October. The lowest temperature tomorrow will be in line with the average low temperature.

On Sunday, in Longmont, sunrise will be at 7:14 am and sunset at 6:16 pm (MDT).

Tomorrow, the daylight will last for 11h and 2min.