Weather forecast for 10 daysLongmont, CO

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 75°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphSE 132°
  • Humidity: 44%
  • UV index: 4
  • Sunrise: 7:13 am MDT
  • Sunset: 6:17 pm MDT
  • ▼
On Saturday, October 17, the forecast calls for abundant sunshine.
Daytime will experience a high of a moderately hot 75.2°F, significantly differing from the forecasted night low of a wintry 37.4°F.
Today, the predicted high will be higher and much closer to September's average high of 77.2°F than October's 61.5°F.
Sunrise will be at 7:13 am and sunset at 6:17 pm; the daylight will last for 11h and 4min.

Sunday Oct 18, 2026

  • 75°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphESE 104°
  • Humidity: 30%
  • UV index: 4
  • Sunrise: 7:14 am MDT
  • Sunset: 6:16 pm MDT
  • ▼
On Sunday, October 18, sunshine will lead the day, with clouds making only brief appearances.
A stark contrast will be evident between the daytime peak temperature of a temperate 75.2°F and the nighttime low of a wintry 41°F.
The forecast high of 75.2°F aligns more closely with September's typical high of 77.2°F than with October's usual 61.5°F.
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: Sunday - Monday 63°C.

Chance of precipitation

Highest chance: Saturday 24.10. 30%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 75°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphSE 132°
  • Humidity: 44%
  • UV index: 4
  • Sunrise: 7:13 am MDT
  • Sunset: 6:17 pm MDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 75°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphESE 104°
  • Humidity: 30%
  • UV index: 4
  • Sunrise: 7:14 am MDT
  • Sunset: 6:16 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 4mphE 88°
  • Humidity: 44%
  • UV index: 4
  • Sunrise: 7:15 am MDT
  • Sunset: 6:14 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 73°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 4mphESE 110°
  • Humidity: 44%
  • UV index: 4
  • Sunrise: 7:16 am MDT
  • Sunset: 6:13 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 75°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 5mphSE 125°
  • Humidity: 41%
  • UV index: 4
  • Sunrise: 7:17 am MDT
  • Sunset: 6:12 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 73°F
  • 48°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 5mphE 85°
  • Humidity: 47%
  • UV index: 3
  • Sunrise: 7:18 am MDT
  • Sunset: 6:10 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 72°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 7mphSSW 204°
  • Humidity: 46%
  • UV index: 4
  • Sunrise: 7:20 am MDT
  • Sunset: 6:09 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 64°F
  • 39°F
PM Showers
PM Showers
  • Precip. probability: 30%
  • Precipitation: 0.04"
  • Wind: 6mphENE 67°
  • Humidity: 52%
  • UV index: 4
  • Sunrise: 7:21 am MDT
  • Sunset: 6:08 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 63°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 5mphE 79°
  • Humidity: 55%
  • UV index: 4
  • Sunrise: 7:22 am MDT
  • Sunset: 6:06 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 63°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 11%
  • Precipitation: 0"
  • Wind: 5mphENE 61°
  • Humidity: 45%
  • UV index: 4
  • Sunrise: 7:23 am MDT
  • Sunset: 6:05 pm MDT
  • ▼
Looking ahead, conditions suggest a period of cloudy, sun-filled and damp weather is anticipated.
With a 30% probability, rainfall is expected only on next Saturday. The precipitation will be minimal at 0.04".
Temperature variation will be noticeable in the upcoming days. The maximum temperature will vary between 62.6°F and 75.2°F, while the minimum temperature is forecast to range between 37.4°F and 48.2°F.
Saturday, Sunday and Wednesday, with the highest temperature of 75.2°F, will be the warmest days; with a maximum temperature of 62.6°F, next Sunday and Monday will be the coldest days.
Updated: Oct 17, 2026 @ 12:19:00 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Saturday, clear skies and sunshine are anticipated.

Today, the maximum temperature will be 75.2°F, while the minimum temperature will be 37.4°F.
Today, the maximum temperature will be uncommonly higher than the average highest temperature of 61.5°F in October. The lowest temperature will be in line with the average low of 38.3°F.

On Saturday, in Longmont, sunrise will be at 7:13 am and sunset at 6:17 pm (MDT).

Today, the daylight will last for 11h and 4min.

Tomorrow, sunshine will prevail for most of the day.

Tomorrow, the maximum temperature will be 75.2°F, while the minimum temperature will be 41°F.
The highest temperature tomorrow will be significantly higher than the average maximum of 61.5°F in October. The lowest temperature will be in line with the average low of 38.3°F.

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

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