Colorado · NWS BOU office

Boulder, CO weather

It is 45°F and clear at Boulder Municipal Airport as of Oct 27, 11:35 PM MDT. Overnight: Mostly Clear, low near 40°F. Forecast from the National Weather Service, issued Oct 27, 12:46 PM MDT.

Updated Oct 28, 12:18 AM MDT (snapshot)

Current conditions

Temperature

45°F

Clear · feels like 43°F

Wind

WSW 3 mph

Humidity 66% · dew point 34°F

Pressure · visibility

29.97 inHg

Visibility 10 mi

Observed at Boulder Municipal Airport (KBDU), Oct 27, 11:35 PM MDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Boulder forecast zone right now.

Around the NWS BOU forecast area

No active alerts in zones served by the BOU office near Boulder.

From the alert snapshot of Oct 28, 2026, 2:15 AM EDT. Colorado has 3 active alerts: see them all.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Boulder (local time)
TimeTempForecastPrecip. chanceWind
Wed 12 AM41°FMostly Clear0%WNW 3 mph
Wed 1 AM43°FMostly Clear0%W 3 mph
Wed 2 AM42°FMostly Clear0%W 5 mph
Wed 3 AM40°FPartly Cloudy0%W 5 mph
Wed 4 AM40°FPartly Cloudy0%W 5 mph
Wed 5 AM40°FPartly Cloudy0%W 5 mph
Wed 6 AM40°FPartly Sunny0%W 5 mph
Wed 7 AM41°FMostly Cloudy0%WSW 5 mph
Wed 8 AM42°FPartly Sunny0%W 5 mph
Wed 9 AM47°FPartly Sunny0%W 6 mph
Wed 10 AM55°FMostly Sunny0%WSW 5 mph
Wed 11 AM60°FMostly Sunny0%SW 3 mph
Wed 12 PM64°FMostly Sunny0%SSE 2 mph
Wed 1 PM66°FSunny0%SE 5 mph
Wed 2 PM67°FMostly Sunny0%SE 6 mph
Wed 3 PM69°FSunny0%SE 6 mph
Wed 4 PM67°FMostly Sunny0%SE 6 mph
Wed 5 PM66°FSunny0%SE 5 mph
Wed 6 PM62°FMostly Clear0%S 2 mph
Wed 7 PM56°FPartly Cloudy0%SSW 2 mph
Wed 8 PM54°FPartly Cloudy0%W 2 mph
Wed 9 PM52°FPartly Cloudy0%W 3 mph
Wed 10 PM50°FPartly Cloudy0%W 3 mph
Wed 11 PM47°FPartly Cloudy0%W 2 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Boulder can differ.

7-day forecast

Overnight

Low 40°F

Mostly clear, with a low around 40. West wind around 5 mph.

Wednesday

High 69°F·Low 39°F

Mostly sunny. High near 69, with temperatures falling to around 66 in the afternoon. Southwest wind 2 to 6 mph.

Wednesday Night: Partly cloudy, with a low around 39. West southwest wind around 3 mph.

Thursday

High 64°F·Low 42°F

Mostly sunny, with a high near 64. South wind around 3 mph.

Thursday Night: Partly cloudy, with a low around 42. North northwest wind 0 to 3 mph.

Friday

High 62°F·Low 43°F

Partly sunny, with a high near 62.

Friday Night: Mostly cloudy, with a low around 43.

Saturday

High 63°F·Low 43°F

Mostly sunny, with a high near 63.

Saturday Night: Partly cloudy, with a low around 43.

Sunday

High 58°F·Low 42°F

A chance of rain showers after 11am. Mostly cloudy, with a high near 58.

Sunday Night: Rain showers likely. Mostly cloudy, with a low around 42.

Monday

High 53°F·Low 38°F

Rain showers likely. Mostly cloudy, with a high near 53.

Monday Night: A chance of rain showers before 11pm, then a chance of rain and snow showers. Mostly cloudy, with a low around 38.

Tuesday

High 53°F

A slight chance of rain showers before 8am, then a slight chance of rain and snow showers. Partly sunny, with a high near 53.

Nearby cities

Larger cities in the area

Other cities in Boulder County

See every city we cover in Colorado, or check all active alerts.

About this forecast

Forecast office
Boulder is served by the National Weather Service BOU forecast office, forecast zone COZ039, county zone COC013.
Location used
The Census Bureau's internal point for Boulder (40.0244, -105.2513), in Boulder County. Population: 106,803 (2024 estimate), number 12 of the 33 Colorado cities on this site.
Radar
Nearest NWS radar: KFTG. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/40.0244,-105.2513 (forecast issued Oct 27, 12:46 PM MDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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