Current Conditions

Boulder, Colorado

82°F28°C
Drizzle

Wind

S 4 mph7 km/h

Humidity

23%

Cloud Cover

48%

As of Wednesday, September 2, 2026 at 2:49 PM MDT

Today's Outlook

Day

Partly cloudy and warm, with a high of 82°F28°C. Light wind from the S around 4 mph6 km/h. 13% chance of drizzle in the afternoon. Dry air.

Night

Partly cloudy, with a low around 64°F18°C. Light wind from the W around 4 mph6 km/h. 45% chance of drizzle in the evening.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
DrizzleHigh 82°F28°CLow 64°F18°CPrecip 0.02 in0.6 mm45%Cloud 36%Wind SW 4 mph6 km/hWednesday: Partly cloudy and warm, with a high of 82°F28°C. Light wind from the S around 4 mph6 km/h. 13% chance of drizzle in the afternoon. Dry air. Wednesday Night: Partly cloudy, with a low around 64°F18°C. Light wind from the W around 4 mph6 km/h. 45% chance of drizzle in the evening.
ClearHigh 84°F29°CLow 53°F12°CPrecip 0 in0 mmCloud 16%Wind WSW 5 mph8 km/hThursday: Mostly clear and warm, with a high of 84°F29°C and morning low of 53°F12°C. Light wind from the SW around 4 mph7 km/h. Dry air. Thursday Night: Mostly clear, with a low around 55°F13°C. Light wind from the W around 5 mph8 km/h.
DrizzleHigh 85°F29°CLow 53°F12°CPrecip 0.01 in0.2 mm14%Cloud 15%Wind WSW 5 mph8 km/hFriday: Mostly clear and warm, with a high of 85°F29°C and morning low of 53°F12°C. Breezy from the SSW at 5 to 7 mph8 to 11 km/h. Dry air. Friday Night: Mostly clear, with a low around 56°F13°C. Light wind from the W around 4 mph7 km/h. 14% chance of drizzle in the evening.
DrizzleHigh 82°F28°CLow 56°F13°CPrecip 0.02 in0.6 mm23%Cloud 43%Wind W 4 mph7 km/hSaturday: Partly cloudy and warm, with a high of 82°F28°C and morning low of 56°F13°C. Light wind from the WNW around 5 mph7 km/h. 23% chance of drizzle in the afternoon. Dry air. Saturday Night: Partly cloudy, with a low around 58°F14°C. Light wind from the W around 4 mph7 km/h. 21% chance of drizzle in the evening.
ShowersHigh 81°F27°CLow 56°F13°CPrecip 0.07 in1.7 mm51%Cloud 44%Wind WSW 4 mph6 km/hSunday: Partly cloudy and warm, with a high of 81°F27°C and morning low of 56°F13°C. Light wind from the SE around 4 mph6 km/h. 39% chance of showers in the afternoon. Dry air. Sunday Night: Mostly cloudy, with a low around 59°F15°C. Light wind from the W around 4 mph6 km/h. 51% chance of showers in the evening.
ShowersHigh 81°F27°CLow 58°F14°CPrecip 0.07 in1.7 mm58%Cloud 56%Wind WSW 4 mph7 km/hMonday: Mostly cloudy and warm, with a high of 81°F27°C and morning low of 58°F14°C. Light wind from the SW around 4 mph7 km/h. 44% chance of drizzle in the afternoon. Dry air. Monday Night: Mostly cloudy, with a low around 59°F15°C. Light wind from the W around 4 mph7 km/h. 58% chance of showers throughout the night.
DrizzleHigh 81°F27°CLow 54°F12°CPrecip 0.04 in1 mm23%Cloud 34%Wind SW 5 mph7 km/hTuesday: Partly cloudy and warm, with a high of 81°F27°C and morning low of 54°F12°C. Light wind from the S around 5 mph7 km/h. 22% chance of drizzle in the afternoon. Dry air. Tuesday Night: Partly cloudy, with a low around 57°F14°C. Light wind from the W around 4 mph7 km/h. 23% chance of drizzle in the evening.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 282°F28°C64°F18°C0.02 in0.6 mm· 45%36%DrizzleSW 4 mph6 km/h
ThursdaySep 384°F29°C53°F12°C0 in0 mm· —16%ClearWSW 5 mph8 km/h
FridaySep 485°F29°C53°F12°C0.01 in0.2 mm· 14%15%DrizzleWSW 5 mph8 km/h
SaturdaySep 582°F28°C56°F13°C0.02 in0.6 mm· 23%43%DrizzleW 4 mph7 km/h
SundaySep 681°F27°C56°F13°C0.07 in1.7 mm· 51%44%ShowersWSW 4 mph6 km/h
MondaySep 781°F27°C58°F14°C0.07 in1.7 mm· 58%56%ShowersWSW 4 mph7 km/h
TuesdaySep 881°F27°C54°F12°C0.04 in1 mm· 23%34%DrizzleSW 5 mph7 km/h
WednesdaySep 977°F25°C54°F12°C0.06 in1.4 mm· 32%52%ShowersSSW 4 mph6 km/h
ThursdaySep 1077°F25°C54°F12°C0.09 in2.3 mm· 42%58%ShowersWSW 4 mph6 km/h
FridaySep 1176°F24°C53°F12°C0.09 in2.2 mm· 31%45%ShowersWSW 4 mph7 km/h
SaturdaySep 1275°F24°C52°F11°C0.07 in1.9 mm· 28%38%ShowersWSW 5 mph7 km/h
SundaySep 1376°F24°C50°F10°C0.07 in1.7 mm· 28%36%ShowersWSW 4 mph7 km/h
MondaySep 1475°F24°C51°F10°C0.07 in1.7 mm· 22%34%FlurriesWSW 5 mph7 km/h
TuesdaySep 1573°F23°C49°F10°C0.08 in2 mm· 24%35%FlurriesWSW 4 mph7 km/h
WednesdaySep 1674°F23°C49°F9°C0 in0.1 mm· 25%37%FlurriesWSW 4 mph7 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 40.0150°N, 105.2706°W·Elevation: 1624m·Timezone: America/Denver·Population: 106,803