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Longmont, CO 80504 Weather
Current conditions
Forecast for this hour (no station report in the last two hours)
Forecast
10-day-
Today
Mostly sunny. High near 77, with temperatures falling to around 75 in the afternoon. South southeast wind 2 to 7 mph.
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Tonight
Mostly cloudy. Low around 48, with temperatures rising to around 50 overnight. Southwest wind around 6 mph.
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Thursday
Mostly cloudy. High near 76, with temperatures falling to around 74 in the afternoon. North northwest wind around 5 mph.
National Weather Service forecast updated 14 hrs ago.
Hourly
Hourly forecast- Now75°
- 3 PM76°
- 4 PM77°
- 5 PM75°
- 6 PM73°
- 7 PM69°
- 8 PM64°
- 9 PM62°
- 10 PM60°
- 11 PM58°
- Thu12 AM55°
- 1 AM54°
- 2 AM53°
- 3 AM52°
- 4 AM51°
- 5 AM50°
- 6 AM50°
- 7 AM48°
- 8 AM50°
- 9 AM55°
- 10 AM60°
- 11 AM65°
- 12 PM69°
- 1 PM72°
10-day forecast
Details- TodayOct 21Mostly Sunny48°77°
- ThuOct 22Mostly Cloudy12%51°76°
- FriOct 23Mostly Sunny13%44°81°
- SatOct 24Chance Rain Showers47%37°57°
- SunOct 25Slight Chance Rain Showers24%35°56°
- MonOct 26Partly Sunny14%35°55°
- TueOct 27Mostly Sunny35°60°
- WedOct 28Mostly sunny38°65°
- ThuOct 29Sunny33°55°
- FriOct 30Mostly sunny30°60°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Longmont
More weather news-
Mostly sunny, mid-70s on tap in Denver metro this weekDenver7 Coloradoâs warm October stretch isnât going anywhere just yet Highs in the 70s are expected across Denver and the Front Range through Friday, with a few mountain showers and a better chance for rain in…
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Cannabis calendar: Vampire dinner, pumpkin carving, costume skate party While 70-degree days have washed over Denver like a nice fall preamble, the city should have had its first snowfall by now, based on historical…
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Warm and dry conditions on Sunday for metro Denver and much of ColoradoDenver7 It will be another stunner of a day from Frisco and Fort Collins to Boulder and Denver Skies will be more mixed at times today, featuring a slight increase in clouds as a weak wave moves from California into…
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Tracking a mild and dry stretch in Denver with rain and snow in the mountainsCBS News Bay Area Evening Edition Weekend 5pm CBS News Detroit Weekend 6:30pm CBS News Miami 6:30pm CBS Philadelphia at 6:30pm What's in Season with Michael Marks CBS News Texas 5:30pm
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Latest Forecast | Denver sunshine and 70s this week9News Latest Forecast | Denver sunshine and 70s this week To stream 9NEWS on your phone, you need the 9NEWS app. Download the 9NEWS app Next up in 5 Example video title will go here for this video Before You Leave…
- Denver Basks in Balmy 70s Before Late-Week Showers Crash the Party
Denver is waking up clear and cool Sunday morning, but the chill will not last long. Temperatures should climb before topping out near 75 degrees under mostly sunny skies. The forecast calls for a cooler Monday, a…
- Denver Weather Forecast Sunny 70s Through Midweek
Temperatures should move through the 40s and 50s during the morning, reaching about 60 by late morning and the mid-70s during the afternoon. A freeze warning remains in effect until 9 a.m. for parts of the northeastern…
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Denver still waiting on first snow as average date (October 19th) nears — Simon Roebuck (WeatherTotals.com) #snowpackFrom email from Simon Roebuck: Denver has not recorded any snowfall for the 2026-27 season as of October 17, 2026. The average first measurable snow date, October 19, comes from National Weather Service Boulder records…
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FIRST ALERT WEATHER: Mild Monday followed by a gradual warming trendA weak upper-level wave moving out of Denver will influence our weather through Tuesday, but the Ozarks can expect mainly dry conditions and mild temperatures for the next several days. After a cool start this morning…
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Weather Of The World: October 18A view of the Garonne River at a historically low level due to a lack of rainfall, successive summer heat waves and the prefecture's low-water management policy in Toulouse, in southwestern France, on Oct. 14, 2026…
Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Forecast
- WedModerate
- ThuModerate
Denver-Boulder, CO reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyLongmont 2 Ese, records since 1893. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Denver 44 km
- Aurora 46 km
- Fort Collins 52 km
- Lakewood 49 km
- Thornton 29 km
- Westminster 34 km
- Arvada 38 km
- Greeley 38 km
- Boulder 30 km
- Loveland 32 km
- Broomfield 26 km
- Commerce City 36 km
Forecasters' discussion
From the National Weather Service office in BOU, issued 1 hr ago
Key Messages
- Warm and dry conditions continue across the lower elevations for the next few days, with scattered light rain and snow showers across the higher elevations.
- Cooler, more unsettled weather returns this weekend across the forecast area.
- At least a brief warm-up likely sometime early next week.
Bou Watches
None.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.