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In Colorado, Dillon Reservoir is a reservoir used for time on and around the water. Fish documented in the area include Mackinaw (Lake Trout), Rainbow Trout, Kokanee Salmon, and Brook Trout. Its recorded surface area is approximately 3,233 acres. The deepest point reaches about 210 feet, and the surface sits near 9,017 feet above sea level. LakeRadar pulls readings from a mapped water gauge, so current water data is shown when the station reports. Coverage here includes an hourly and 7-day forecast, wind and gust outlook, water readings, fishing conditions, and activity scores for boating, paddling, and swimming. Other waters in the region include Dillon Reservoir, Green Mountain Reservoir, and Shadow Mountain Lake. Forecasts for Dillon Reservoir come from the National Weather Service and refresh several times a day.
Updated
No active alerts for this lake as of the last check (Oct 11, 3:33 PM MDT). Alerts are re-checked automatically; see the official source for updates.
Overall Good (89/100) across 4 activities. Best right now: Sailing (98/100).
How the score is calculated →Best good fishing window, averaging 88/100 across these hours. Wind 7 mph from the west-southwest. Dusk hours (18:00 local). Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | 6p | 7p | 8p |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 66° | 65° | 64° | 61° | 55° | 52° | 49° | 47° | 46° | 44° | 42° | 40° | 39° | 37° | 36° | 36° | 35° | 35° | 39° | 48° | 54° | 57° | 59° | 60° |
| Wind (kts) | 9 | 9 | 9 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 9 | 8 | 7 | 6 | 6 | 6 | 7 | 8 | 9 | 9 | 9 | 9 |
| Direction | S | S | S | S | S | S | S | S | S | S | S | S | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW |
| Gusts (kts) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Precip % | 0% | 0% | 0% | 29% | 29% | 29% | 29% | 29% | 29% | 18% | 18% | 18% | 18% | 18% | 18% | 8% | 8% | 8% | 8% | 8% | 8% | 5% | 5% | 5% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Sun, 3 PM MDT | 66°F | 10 mph S (180°) | No data | 0% | No data | Partly Sunny |
| Sun, 4 PM MDT | 65°F | 10 mph S (180°) | No data | 0% | No data | Partly Sunny |
| Sun, 5 PM MDT | 64°F | 10 mph S (180°) | No data | 0% | No data | Partly Sunny |
| Sun, 6 PM MDT | 61°F | 9 mph S (180°) | No data | 29% | No data | Chance Rain Showers |
| Sun, 7 PM MDT | 55°F | 8 mph S (180°) | No data | 29% | No data | Chance Rain Showers |
| Sun, 8 PM MDT | 52°F | 8 mph S (180°) | No data | 29% | No data | Chance Rain Showers |
| Sun, 9 PM MDT | 49°F | 8 mph S (180°) | No data | 29% | No data | Chance Rain Showers |
| Sun, 10 PM MDT | 47°F | 8 mph S (180°) | No data | 29% | No data | Chance Rain Showers |
| Sun, 11 PM MDT | 46°F | 8 mph S (180°) | No data | 29% | No data | Chance Rain Showers |
| Mon, 12 AM MDT | 44°F | 8 mph S (180°) | No data | 18% | No data | Slight Chance Rain Showers |
| Mon, 1 AM MDT | 42°F | 9 mph S (180°) | No data | 18% | No data | Slight Chance Rain Showers |
| Mon, 2 AM MDT | 40°F | 9 mph S (180°) | No data | 18% | No data | Slight Chance Rain Showers |
| Mon, 3 AM MDT | 39°F | 10 mph SSW (203°) | No data | 18% | No data | Slight Chance Rain Showers |
| Mon, 4 AM MDT | 37°F | 9 mph SSW (203°) | No data | 18% | No data | Slight Chance Rain Showers |
| Mon, 5 AM MDT | 36°F | 8 mph SSW (203°) | No data | 18% | No data | Slight Chance Rain Showers |
| Mon, 6 AM MDT | 36°F | 7 mph SW (225°) | No data | 8% | No data | Mostly Sunny |
| Mon, 7 AM MDT | 35°F | 7 mph SW (225°) | No data | 8% | No data | Mostly Sunny |
| Mon, 8 AM MDT | 35°F | 7 mph SSW (203°) | No data | 8% | No data | Mostly Sunny |
| Mon, 9 AM MDT | 39°F | 8 mph SW (225°) | No data | 8% | No data | Mostly Sunny |
| Mon, 10 AM MDT | 48°F | 9 mph SW (225°) | No data | 8% | No data | Sunny |
| Mon, 11 AM MDT | 54°F | 10 mph SW (225°) | No data | 8% | No data | Sunny |
| Mon, 12 PM MDT | 57°F | 10 mph SW (225°) | No data | 5% | No data | Sunny |
| Mon, 1 PM MDT | 59°F | 10 mph SW (225°) | No data | 5% | No data | Sunny |
| Mon, 2 PM MDT | 60°F | 10 mph SW (225°) | No data | 5% | No data | Sunny |
| Mon, 3 PM MDT | 61°F | 10 mph SW (225°) | No data | 5% | No data | Sunny |
Official National Weather Service hourly forecast. Showing 10 of 25 hours. Wind arrows point the way the wind is blowing; the compass point and degrees show where it comes from.
| Period | This Afternoon October 11, 2026 | Tonight October 11, 2026 | Columbus Day October 12, 2026 | Monday Night October 12, 2026 | Tuesday October 13, 2026 | Tuesday Night October 13, 2026 | Wednesday October 14, 2026 | Wednesday Night October 14, 2026 | Thursday October 15, 2026 | Thursday Night October 15, 2026 | Friday October 16, 2026 | Friday Night October 16, 2026 | Saturday October 17, 2026 | Saturday Night October 17, 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 66° | 35° | 61° | 32° | 55° | 32° | 44° | 26° | 49° | 24° | 54° | 26° | 58° | 28° |
| Wind | S 10 mph | SSW 10 mph | SW 7 to 10 mph | SSW 7 mph | S 6 to 12 mph | SSE 9 mph | S 6 to 9 mph | W 5 mph | NW 6 mph | ENE 5 mph | SSE 5 mph | SSE 3 mph | WSW 1 to 5 mph | W 3 mph |
| Gusts | 21 mph | 20 mph | 20 mph | 17 mph | 25 mph | — | — | — | — | — | — | — | — | — |
| Precip % | 0% | 29% | 8% | 11% | 32% | 55% | 87% | 80% | 24% | 20% | 7% | 4% | 3% | 8% |
| Forecast |
No active USGS or USACE telemetry gauge is currently mapped to Dillon Reservoir. Not available from a verified source for this lake.
Nearby river temperature: 43.5°F at BLUE RIVER BELOW DILLON, CO. (1.5 mi away) · Oct 11, 2:15 PM UTC
Good for fishing (82/100), from 5 available inputs. Supporting this: Wind 10 mph from the south. 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 boating (92/100), from 3 available inputs. Supporting this: No active official alerts for this lake. Wind 10 mph from the south. Not available from a verified source for this lake: gusts, visibility and conditions, verified water access. Confidence is moderate (74%) because some inputs are unavailable or older than ideal.
Excellent for sailing (98/100), from 3 available inputs. Supporting this: Wind 10 mph from the S is in the preferred sailing range. No active official alerts for this lake. Not available from a verified source for this lake: gust stability, visibility. Confidence is moderate (78%) because some inputs are unavailable or older than ideal.
Excellent for kayaking (91/100), from 4 available inputs. Supporting this: Wind 10 mph from the south. No active official alerts for this lake. Not available from a verified source for this lake: gusts. Confidence is moderate (78%) because some inputs are unavailable or older than ideal.
Water temperature is not available from a verified source for this lake. No swimming score is shown without it.
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Individual boat ramp GPS coordinates are maintained under the jurisdiction of CO Parks & Wildlife Authority. Public boaters should verify seasonal launch water levels, gate hours, and daily vehicle/vessel fees before traveling.
A versatile water resource in CO, Dillon Reservoir offers expansive open waters for motorized cruising, sailing, and shoreline fishing. The lake's dynamic character across the seasons attracts outdoor enthusiasts year-round. Check current USGS streamflow gauges, water temperatures, and state regulations for the best experience.
Valid freshwater sport fishing license issued by Colorado Parks and Wildlife (CPW) is required for anglers age 16+. Digital license on mobile is accepted.
Mandatory Clean, Drain & Dry inspection. Out-of-area craft require on-site Aquatic Invasive Species (AIS Quagga/Zebra) inspection or decontamination before launch. USCG life jackets required for all.
Public shoreline and boating access managed by State & Local Authorities. Verify seasonal gate hours, launch fees, and parking rules before travel.
High-speed motorboating, pontoon cruising, wakeboarding, and water skiing across main channels. Target gamefish include Mackinaw (Lake Trout), Rainbow Trout, Kokanee Salmon, Brook Trout. Morning hours typically provide optimal glassy conditions for kayak and stand-up paddleboard (SUP) touring.
Warm water temperatures, peak swimming, active watersports, and open full-service campgrounds. Highest weekly attendance; plan early arrivals on summer weekends.
Spring pre-spawn and fall feeding transitions create prime trophy angling conditions. Cooler air, lower boat traffic, and vibrant seasonal shoreline foliage.
High-altitude mountain winter climate (elevation 9,017 ft MSL). Freezing temperatures, potential snowpack or ice cover, and reduced seasonal amenities. Winter safety caution advised.
No external source rows are cited by the data currently shown on this page.
Updated
Scores are heuristics, not safety guarantees. LakeRadar scores summarize available conditions and are not a substitute for official warnings, local rules, or on-water judgment.
All telemetry for Dillon Reservoir is synchronized directly from authorized federal and state monitoring networks (USGS, NWS, NOAA, and state environmental authorities). Observations are strictly instrumented readings — unmonitored sensors are transparently disclosed rather than synthetic estimates.
Last source audit: Oct 11, 3:33 PM MDT