Loading page content…
Loading page content…
Loading lake conditions…
Official National Weather Service (NWS) point forecast and real-time wind conditions for Boulder Reservoir (Colorado). 24-hour hour-by-hour wind timelines, peak gusts, watercraft recreation safety thresholds, and 7-day marine outlook.
Today: High 85°F · Low 59°F
Peak gusts: 2 mph · Lake surface chop expected
Humidity: 39% · Barometer: 29.75 inHg
USGS water monitoring available for Boulder Reservoir.
Excellent for boating (99/100), from 4 available inputs. Supporting this: Wind 1 mph from the southeast. Gusts to 2 mph. Not available from a verified source for this lake: visibility and conditions, verified water access. Confidence is moderate (84%) because some inputs are unavailable or older than ideal.
Good for fishing (86/100), from 5 available inputs. Supporting this: Wind 1 mph from the southeast. 0% chance of precipitation. Not available from a verified source for this lake: pressure trend, water temperature. Confidence is moderate (74%) because some inputs are unavailable or older than ideal.
Excellent for kayaking (99/100), from 5 available inputs. Supporting this: Wind 1 mph from the southeast. Gusts to 2 mph. Confidence is high (90%).
Water temperature is not available from a verified source for this lake. No swimming score is shown without it. Supporting this: No active official alerts for this lake. 0% chance of precipitation. Not available from a verified source for this lake: water temperature.
| Time | Air Temp | Wind (mph) | Direction | Peak Gusts | Rain Chance | Sky & Conditions |
|---|---|---|---|---|---|---|
| 10 AM | 71°F | 1 mph | SE | ⚡ 2 mph | 0% | Sunny |
| 11 AM | 76°F | 2 mph | E | ⚡ 4 mph | 0% | Sunny |
| 12 PM | 81°F | 3 mph | SE | ⚡ 6 mph | 1% | Sunny |
| 1 PM | 83°F | 3 mph | SE | ⚡ 6 mph | 1% | Sunny |
| 2 PM | 84°F | 5 mph | SE | ⚡ 8 mph | 4% | Sunny |
| 3 PM | 85°F | 7 mph | SE | ⚡ 12 mph | 4% | Mostly Sunny |
| 4 PM | 84°F | 7 mph | S | ⚡ 12 mph | 4% | Mostly Sunny |
| 5 PM | 82°F | 7 mph | NW | ⚡ 12 mph | 4% | Mostly Sunny |
| 6 PM | 80°F | 6 mph | NW | ⚡ 9 mph | 4% | Partly Cloudy |
| 7 PM | 73°F | 8 mph | NW | ⚡ 12 mph | 4% | Partly Cloudy |
| 8 PM | 70°F | 9 mph | W | ⚡ 16 mph | 3% | Partly Cloudy |
| 9 PM | 68°F | 10 mph | W | ⚡ 20 mph | 1% | Partly Cloudy |
| 10 PM | 66°F | 10 mph | W | ⚡ 20 mph | 0% | Partly Cloudy |
| 11 PM | 65°F | 12 mph | W | ⚡ 21 mph | 0% | Partly Cloudy |
| 12 AM | 64°F | 8 mph | W | ⚡ 15 mph | 0% | Partly Cloudy |
| 1 AM | 63°F | 8 mph | SW | ⚡ 15 mph | 0% | Mostly Clear |
| 2 AM | 61°F | 8 mph | SW | ⚡ 15 mph | 0% | Mostly Clear |
| 3 AM | 59°F | 7 mph | SW | ⚡ 13 mph | 0% | Mostly Clear |
| 4 AM | 56°F | 7 mph | SW | ⚡ 13 mph | 0% | Clear |
| 5 AM | 55°F | 6 mph | W | ⚡ 10 mph | 0% | Clear |
| 6 AM | 54°F | 6 mph | W | ⚡ 9 mph | 0% | Sunny |
| 7 AM | 54°F | 6 mph | SW | ⚡ 9 mph | 0% | Sunny |
| 8 AM | 58°F | 6 mph | W | ⚡ 10 mph | 0% | Sunny |
| 9 AM | 64°F | 6 mph | SW | ⚡ 10 mph | 0% | Sunny |
Mirror-like to gentle rippled water. Optimal conditions for paddleboarding, kayaking, swimming, and beginner water skiing or wakeboarding.
Pleasant breeze with small wavelets. Great for sailing, pleasure cruising, pontoon boats, and trolling for trout and bass.
Moderate waves with whitecaps likely. Requires skilled boat handling; kayaks, canoes, and stand-up paddleboards should stay close to sheltered bays.
Steep waves, cold spray, and hazardous open water. Avoid small craft voyages. Always check official National Weather Service lake wind advisories.
Sunny. High near 86, with temperatures falling to around 82 in the afternoon. Southeast wind 1 to 7 mph.
Partly cloudy, with a low around 54. West southwest wind 6 to 12 mph, with gusts as high as 21 mph.
Mostly sunny. High near 83, with temperatures falling to around 80 in the afternoon. Southwest wind 5 to 8 mph.
Mostly cloudy, with a low around 55. West southwest wind 5 to 9 mph.
Partly sunny, with a high near 79. South wind 2 to 7 mph.
Partly cloudy, with a low around 52.
Sunny, with a high near 78.
A chance of rain showers. Partly cloudy, with a low around 49.
A chance of rain showers after noon. Mostly sunny, with a high near 71.
A chance of rain showers. Mostly cloudy, with a low around 44.
A chance of rain showers. Partly sunny, with a high near 67.
A chance of rain showers. Mostly cloudy, with a low around 42.
A chance of rain showers. Mostly sunny, with a high near 66.
A chance of rain showers before 3am, then a chance of rain and snow showers. Mostly cloudy, with a low around 37.
Boulder Reservoir currently reports 52°F with wind velocity near 0 mph from the W. Atmospheric forecasts and 24-hour hour-by-hour wind timelines are updated hourly from the National Weather Service gridpoint matching the lake's coordinates.
At Boulder Reservoir and surrounding mountain valleys, diurnal heating of the surrounding terrain causes strong thermal pressure differentials known locally as afternoon breezes (such as the Washoe Zephyr at Lake Tahoe). Wind speeds typically peak between 1:00 PM and 5:00 PM before calming near sunset.
For stand-up paddleboarding (SUP), canoeing, and light kayaks, winds under 7 mph (light breeze) offer the safest, glassiest surface conditions. Between 8–14 mph, small wavelets develop, suitable for sailboats and powerboats. Winds exceeding 15 mph create steep whitecaps and rapid drift; winds over 21 mph warrant small craft warnings.
All weather and wind telemetry is fetched directly from the National Weather Service (NOAA - WFO BOU) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Boulder Reservoir without artificial smoothing or third-party estimates.
Yes. Live hydrological sensor readings, 30-day elevation histories, full-pool benchmarks, and USGS station provenance are available on our dedicated Boulder Reservoir Water Level & Temperature page.
View Boulder Reservoir Water Level & Temperature →