Colorado · NWS BOU office

Louisville, CO weather

It is 45°F and clear at Broomfield / Jeffco as of Oct 28, 2:55 AM MDT. Overnight: Mostly Clear, low near 40°F. Forecast from the National Weather Service, issued Oct 28, 12:46 AM MDT.

Updated Oct 28, 3:30 AM MDT (snapshot)

Current conditions

Temperature

45°F

Clear · feels like 42°F

Wind

NNW 5 mph

Humidity 61% · dew point 32°F

Pressure · visibility

29.97 inHg

Visibility 10 mi

Observed at Broomfield / Jeffco (KBJC), Oct 28, 2:55 AM MDT. Station readings can lag or be missing.

Alerts for this area

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

Around the NWS BOU forecast area

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

From the alert snapshot of Oct 28, 2026, 5:12 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 Louisville (local time)
TimeTempForecastPrecip. chanceWind
Wed 5 AM40°FPartly Cloudy0%SW 5 mph
Wed 6 AM40°FPartly Sunny0%SW 5 mph
Wed 7 AM40°FCloudy0%SSW 6 mph
Wed 8 AM41°FMostly Cloudy0%SW 6 mph
Wed 9 AM46°FPartly Sunny0%SW 7 mph
Wed 10 AM53°FMostly Sunny0%NNW 5 mph
Wed 11 AM58°FMostly Sunny0%N 2 mph
Wed 12 PM63°FMostly Sunny0%SSE 3 mph
Wed 1 PM65°FMostly Sunny0%SSE 6 mph
Wed 2 PM65°FMostly Sunny0%SE 7 mph
Wed 3 PM67°FMostly Sunny0%SE 8 mph
Wed 4 PM65°FMostly Sunny0%SE 7 mph
Wed 5 PM64°FMostly Sunny0%SE 5 mph
Wed 6 PM60°FPartly Cloudy0%SE 3 mph
Wed 7 PM54°FPartly Cloudy0%S 3 mph
Wed 8 PM52°FPartly Cloudy0%SW 3 mph
Wed 9 PM51°FPartly Cloudy0%W 5 mph
Wed 10 PM49°FPartly Cloudy0%W 5 mph
Wed 11 PM47°FPartly Cloudy0%WNW 3 mph
Thu 12 AM45°FPartly Cloudy0%WNW 3 mph
Thu 1 AM44°FMostly Clear0%WNW 2 mph
Thu 2 AM43°FMostly Clear0%WNW 2 mph
Thu 3 AM41°FMostly Clear0%WNW 3 mph
Thu 4 AM41°FMostly Clear0%W 3 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 Louisville can differ.

7-day forecast

Overnight

Low 40°F

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

Wednesday

High 67°F·Low 39°F

Mostly sunny. High near 67, with temperatures falling to around 64 in the afternoon. South wind 2 to 8 mph.

Wednesday Night: Partly cloudy, with a low around 39. West southwest wind around 5 mph.

Thursday

High 66°F·Low 41°F

Mostly sunny, with a high near 66. Southeast wind around 5 mph.

Thursday Night: Partly cloudy, with a low around 41. Northwest wind 0 to 5 mph.

Friday

High 64°F·Low 43°F

Partly sunny, with a high near 64.

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

Saturday

High 61°F·Low 43°F

Mostly sunny, with a high near 61.

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

Sunday

High 58°F·Low 43°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 43.

Monday

High 52°F·Low 40°F

Rain showers likely. Mostly cloudy, with a high near 52.

Monday Night: A chance of rain showers. Mostly cloudy, with a low around 40.

Tuesday

High 53°F

A chance of rain showers. Mostly 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
Louisville 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 Louisville (39.9696, -105.1433), in Boulder County. Population: 20,811 (2024 estimate), number 31 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/39.9696,-105.1433 (forecast issued Oct 28, 12:46 AM 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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