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Calero Reservoir sits in California and is classified as a reservoir. Fish documented in the area include Largemouth Bass, European Carp, Bluegill, and Rainbow Trout. The water surface spans about 349 acres, making it a modest body of water. The page brings together an hourly and 7-day forecast, wind and gust outlook, fishing conditions, and activity scores for boating, paddling, and swimming. Other waters in the region include Calaveras Reservoir and San Luis Reservoir. Current weather, wind, and activity conditions for Calero Reservoir are updated throughout the day.
Updated
No active alerts for this lake as of the last check (Oct 9, 11:04 AM PDT). Alerts are re-checked automatically; see the official source for updates.
Best excellent fishing window, averaging 94/100 across these hours. Measured water temperature 74°F. Provisional data. Wind 7 mph from the west. Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 6p | 7p | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 72° | 78° | 80° | 81° | 82° | 81° | 79° | 76° | 69° | 65° | 63° | 62° | 61° | 60° | 59° | 59° | 58° | 57° | 57° | 57° | 56° | 56° | 57° | 58° |
| Wind (kts) | 4 | 4 | 4 | 5 | 5 | 6 | 7 | 6 | 6 | 6 | 7 | 9 | 10 | 10 | 10 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Direction | SE | SE | E | NE | N | N | NW | N | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | S | S | S | SW | SW | SW |
| Gusts (kts) | 8 | 8 | 9 | 10 | 10 | 12 | 12 | 11 | 10 | 10 | 12 | 14 | 16 | 16 | 16 | 15 | 13 | 11 | 12 | 12 | 12 | 12 | 12 | 12 |
| Precip % | 1% | 1% | 1% | 1% | 1% | 1% | 1% | 2% | 2% | 2% | 3% | 3% | 4% | 3% | 3% | 4% | 8% | 8% | 7% | 5% | 3% | 1% | 1% | 1% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Fri, 11 AM PDT | 72°F | 5 mph ESE (113°) | 9 mph | 1% | 0% | Sunny |
| Fri, 12 PM PDT | 78°F | 5 mph ESE (113°) | 9 mph | 1% | 2% | Sunny |
| Fri, 1 PM PDT | 80°F | 5 mph E (90°) | 10 mph | 1% | 0% | Sunny |
| Fri, 2 PM PDT | 81°F | 6 mph NNE (23°) | 12 mph | 1% | 1% | Sunny |
| Fri, 3 PM PDT | 82°F | 6 mph NNW (338°) | 12 mph | 1% | 0% | Sunny |
| Fri, 4 PM PDT | 81°F | 7 mph NNW (338°) | 14 mph | 1% | 0% | Sunny |
| Fri, 5 PM PDT | 79°F | 8 mph NW (315°) | 14 mph | 1% | 0% | Sunny |
| Fri, 6 PM PDT | 76°F | 7 mph NNW (338°) | 13 mph | 2% | 1% | Clear |
| Fri, 7 PM PDT | 69°F | 7 mph ESE (113°) | 12 mph | 2% | 2% | Clear |
| Fri, 8 PM PDT | 65°F | 7 mph ESE (113°) | 12 mph | 2% | 5% | Clear |
| Fri, 9 PM PDT | 63°F | 8 mph SE (135°) | 14 mph | 3% | 6% | Mostly Clear |
| Fri, 10 PM PDT | 62°F | 10 mph SE (135°) | 16 mph | 3% | 6% | Mostly Clear |
| Fri, 11 PM PDT | 61°F | 12 mph SE (135°) | 18 mph | 4% | 9% | Mostly Clear |
| Sat, 12 AM PDT | 60°F | 12 mph ESE (113°) | 18 mph | 3% | 15% | Mostly Clear |
| Sat, 1 AM PDT | 59°F | 12 mph ESE (113°) | 18 mph | 3% | 23% | Mostly Clear |
| Sat, 2 AM PDT | 59°F | 10 mph SE (135°) | 17 mph | 4% | 31% | Partly Cloudy |
| Sat, 3 AM PDT | 58°F | 10 mph ESE (113°) | 15 mph | 8% | 36% | Partly Cloudy |
| Sat, 4 AM PDT | 57°F | 9 mph SE (135°) | 13 mph | 8% | 33% | Partly Cloudy |
| Sat, 5 AM PDT | 57°F | 9 mph SSE (158°) | 14 mph | 7% | 45% | Partly Cloudy |
| Sat, 6 AM PDT | 57°F | 9 mph SSE (158°) | 14 mph | 5% | 45% | Mostly Sunny |
| Sat, 7 AM PDT | 56°F | 9 mph SSE (158°) | 14 mph | 3% | 45% | Mostly Sunny |
| Sat, 8 AM PDT | 56°F | 9 mph SSW (203°) | 14 mph | 1% | 54% | Partly Sunny |
| Sat, 9 AM PDT | 57°F | 9 mph SSW (203°) | 14 mph | 1% | 54% | Partly Sunny |
| Sat, 10 AM PDT | 58°F | 9 mph SSW (203°) | 14 mph | 1% | 54% | Partly Sunny |
| Sat, 11 AM PDT | 62°F | 7 mph W (270°) | 15 mph | 0% | 19% | 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 | Today October 9, 2026 | Tonight October 9, 2026 | Saturday October 10, 2026 | Saturday Night October 10, 2026 | Sunday October 11, 2026 | Sunday Night 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 83° | 56° | 70° | 49° | 65° | 48° | 66° | 49° | 70° | 49° | 74° | 53° | 81° | 57° |
| Wind | NE 5 to 8 mph | ESE 7 to 12 mph | SW 9 mph | W 9 mph | WSW 7 to 12 mph | S 6 to 12 mph | S 6 to 12 mph | NNW 2 to 8 mph | NW 2 to 10 mph | NNE 3 to 10 mph | N 3 to 9 mph | NNW 2 to 9 mph | NNW 3 to 7 mph | N 3 to 7 mph |
| Gusts | 14 mph | 18 mph | 18 mph | 17 mph | 20 mph | 20 mph | 17 mph | 15 mph | 20 mph | 20 mph | 18 mph | 18 mph | 14 mph | 14 mph |
| Precip % | 1% | 8% | 5% | 1% | 8% | 29% | 30% | 7% | 1% | 0% | 0% | 0% | 0% | 0% |
| Forecast |
No active USGS or USACE telemetry gauge is currently mapped to Calero Reservoir. Not available from a verified source for this lake.
SALT POND A4 NR ALVISO CA · Oct 9, 5:45 PM UTC
Good for fishing (89/100), from 6 available inputs. Supporting this: Measured water temperature 74°F. Provisional data. Wind 5 mph from the east-southeast. Not available from a verified source for this lake: pressure trend. Confidence is high (85%).
Excellent for boating (96/100), from 4 available inputs. Supporting this: Wind 5 mph from the east-southeast. Gusts to 9 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 sailing (84/100), from 4 available inputs. Supporting this: Gusts are within 4 mph of sustained wind, so the breeze is steady. No active official alerts for this lake. Not available from a verified source for this lake: visibility. Confidence is high (88%).
Excellent for kayaking (96/100), from 5 available inputs. Supporting this: Wind 5 mph from the east-southeast. Gusts to 9 mph. Confidence is high (90%).
Surface water measured at 74°F. Air and water contrast evaluate recreational immersion comfort.
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Individual boat ramp GPS coordinates are maintained under the jurisdiction of CA Parks & Wildlife Authority. Public boaters should verify seasonal launch water levels, gate hours, and daily vehicle/vessel fees before traveling.
Surrounded by CA's distinct outdoor landscape, Calero Reservoir is an active freshwater reservoir catering to fishermen, pleasure boaters, and nature observers. Its diverse depths and shoreline contours create productive fishing structure across all seasons. Review current launch fees and facility operating schedules before traveling.
Valid freshwater sport fishing license issued by California Department of Fish and Wildlife (CDFW) 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.
Low-wake cruising, electric-troll fishing craft, and quiet-water exploration. Target gamefish include Largemouth Bass, European Carp, Bluegill, Rainbow 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.
Mild year-round outdoor climate. Uncrowded waters, active winter bass and crappie fishing, and open year-round boat launch access.
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 Calero 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 9, 11:16 AM PDT