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Lake Bloomington is a reservoir located in Illinois. Fish documented in the area include Bluegill, White Bass, Black Crappie, and Green Sunfish. The water surface spans about 635 acres, making it a modest body of water. It reaches a maximum depth of roughly 35 feet at an elevation of about 715 feet. Water data on this page comes from a mapped monitoring station near the lake. The page brings together an hourly and 7-day forecast, wind and gust outlook, water readings, fishing conditions, and activity scores for boating, paddling, and swimming. If you are planning a trip, Clinton Lake and Lake Decatur are also nearby. Current weather, wind, and activity conditions for Lake Bloomington are updated throughout the day.
Updated
No active alerts for this lake as of the last check (Oct 9, 3:02 AM CDT). Alerts are re-checked automatically; see the official source for updates.
Overall Fair (63/100) across 4 activities. Best right now: Boating (73/100).
How the score is calculated →Best excellent fishing window, averaging 93/100 across these hours. Wind 8 mph from the south. Dawn hours (07:00 local). Derived from the hourly forecast; official alerts are not forecast and are checked separately.
| Metric | 8a | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p | 6p | 7p | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 51° | 51° | 52° | 54° | 53° | 56° | 59° | 66° | 69° | 72° | 76° | 78° | 80° | 81° | 80° | 77° | 73° | 68° | 67° | 66° | 65° | 65° | 64° | 64° |
| Wind (kts) | 3 | 4 | 4 | 4 | 4 | 5 | 5 | 6 | 7 | 7 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 8 | 9 | 9 | 8 | 8 | 8 |
| Direction | SE | SE | SE | SE | SE | SE | SE | E | NE | E | SE | SE | SE | SE | SE | SE | SE | SE | SE | S | S | S | S | S |
| Gusts (kts) | 7 | 7 | 8 | 8 | 8 | 9 | 10 | 10 | 11 | 12 | 13 | 14 | 13 | 13 | 11 | 10 | 11 | 13 | 14 | 16 | 16 | 16 | 16 | 16 |
| Precip % | 0% | 6% | 7% | 20% | 23% | 33% | 33% | 32% | 27% | 17% | 8% | 4% | 6% | 4% | 3% | 1% | 1% | 1% | 1% | 0% | 0% | 1% | 1% | 1% |
| Time | Temp | Wind | Gusts | Precip | Cloud | Condition |
|---|---|---|---|---|---|---|
| Fri, 3 AM CDT | 51°F | 3 mph ESE (113°) | 8 mph | 0% | 49% | Partly Cloudy |
| Fri, 4 AM CDT | 51°F | 5 mph SE (135°) | 8 mph | 6% | 45% | Partly Cloudy |
| Fri, 5 AM CDT | 52°F | 5 mph SE (135°) | 9 mph | 7% | 62% | Mostly Cloudy |
| Fri, 6 AM CDT | 54°F | 5 mph SE (135°) | 9 mph | 20% | 65% | Slight Chance Showers And Thunderstorms |
| Fri, 7 AM CDT | 53°F | 5 mph SE (135°) | 9 mph | 23% | 58% | Slight Chance Showers And Thunderstorms |
| Fri, 8 AM CDT | 56°F | 6 mph SE (135°) | 10 mph | 33% | 77% | Chance Showers And Thunderstorms |
| Fri, 9 AM CDT | 59°F | 6 mph SE (135°) | 12 mph | 33% | 85% | Chance Showers And Thunderstorms |
| Fri, 10 AM CDT | 66°F | 7 mph E (90°) | 12 mph | 32% | 87% | Chance Showers And Thunderstorms |
| Fri, 11 AM CDT | 69°F | 8 mph NE (45°) | 13 mph | 27% | 84% | Chance Showers And Thunderstorms |
| Fri, 12 PM CDT | 72°F | 8 mph E (90°) | 14 mph | 17% | 78% | Slight Chance Showers And Thunderstorms |
| Fri, 1 PM CDT | 76°F | 9 mph SE (135°) | 15 mph | 8% | 56% | Partly Sunny |
| Fri, 2 PM CDT | 78°F | 9 mph SE (135°) | 16 mph | 4% | 32% | Mostly Sunny |
| Fri, 3 PM CDT | 80°F | 9 mph SE (135°) | 15 mph | 6% | 37% | Mostly Sunny |
| Fri, 4 PM CDT | 81°F | 9 mph SE (135°) | 15 mph | 4% | 14% | Sunny |
| Fri, 5 PM CDT | 80°F | 8 mph SE (135°) | 13 mph | 3% | 10% | Sunny |
| Fri, 6 PM CDT | 77°F | 8 mph ESE (113°) | 12 mph | 1% | 3% | Clear |
| Fri, 7 PM CDT | 73°F | 8 mph SE (135°) | 13 mph | 1% | 7% | Mostly Clear |
| Fri, 8 PM CDT | 68°F | 8 mph SE (135°) | 15 mph | 1% | 12% | Mostly Clear |
| Fri, 9 PM CDT | 67°F | 9 mph SE (135°) | 16 mph | 1% | 6% | Mostly Clear |
| Fri, 10 PM CDT | 66°F | 10 mph SSE (158°) | 18 mph | 0% | 2% | Clear |
| Fri, 11 PM CDT | 65°F | 10 mph SSE (158°) | 18 mph | 0% | 4% | Clear |
| Sat, 12 AM CDT | 65°F | 9 mph S (180°) | 18 mph | 1% | 4% | Clear |
| Sat, 1 AM CDT | 64°F | 9 mph S (180°) | 18 mph | 1% | 4% | Clear |
| Sat, 2 AM CDT | 64°F | 9 mph S (180°) | 18 mph | 1% | 6% | Mostly Clear |
| Sat, 3 AM CDT | 63°F | 9 mph S (180°) | 18 mph | 1% | 3% | Clear |
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 | Overnight October 9, 2026 | Friday October 9, 2026 | Friday Night 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°F) | 51° | 82° | 60° | 81° | 57° | 77° | 57° | 86° | 64° | 80° | 55° | 75° | 57° | 76° |
| Wind | SE 5 mph | ESE 5 to 9 mph | SE 10 mph | SSE 10 mph | ESE 5 to 8 mph | NNE 3 mph | SSE 2 to 6 mph | SSW 6 to 13 mph | SW 9 mph | WNW 12 mph | NE 9 mph | E 7 to 12 mph | SE 13 mph | SSW 13 to 16 mph |
| Gusts | 9 mph | 16 mph | 18 mph | 16 mph | 15 mph | 8 mph | 12 mph | 20 mph | 17 mph | 17 mph | 15 mph | 17 mph | 22 mph | 23 mph |
| Precip % | 7% | 33% | 1% | 1% | 9% | 9% | 0% | 1% | 15% | 15% | 22% | 40% | 50% | 50% |
| Forecast |
No active USGS or USACE telemetry gauge is currently mapped to Lake Bloomington. Not available from a verified source for this lake.
Fair for fishing (59/100), from 5 available inputs. Supporting this: Wind 3 mph from the east-southeast. 0% chance of precipitation. The forecast mentions thunderstorms, which carries a risk penalty. 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.
Fair for boating (73/100), from 4 available inputs. Supporting this: Wind 3 mph from the east-southeast. Gusts to 8 mph. The forecast mentions thunderstorms, which carries a risk penalty. 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.
Poor for sailing (47/100), from 4 available inputs. Supporting this: No active official alerts for this lake. Gusts exceed sustained wind by 5 mph, making the breeze puffy. The forecast mentions thunderstorms, which carries a risk penalty. Not available from a verified source for this lake: visibility. Confidence is high (88%).
Fair for kayaking (71/100), from 5 available inputs. Supporting this: Wind 3 mph from the east-southeast. Gusts to 8 mph. The forecast mentions thunderstorms, which carries a risk penalty. Confidence is high (90%).
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 IL Parks & Wildlife Authority. Public boaters should verify seasonal launch water levels, gate hours, and daily vehicle/vessel fees before traveling.
Nestled within IL, Lake Bloomington offers extensive shoreline access and dependable waters for public recreation. The lake accommodates a wide variety of activities including waterskiing, pontoon cruising, and bank angling. Facility management and regional habitat protection are overseen by state and local natural resource agencies.
Valid freshwater sport fishing license issued by Illinois Department of Natural Resources (IDNR) is required for anglers age 16+. Digital license on mobile is accepted.
Current motorized watercraft registration mandatory. Practice Clean, Drain & Dry protocols: drain all livewells and inspect props before launching. Life jackets required for all passengers.
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 Bluegill, White Bass, Black Crappie, Green Sunfish. 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 Lake Bloomington 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, 3:02 AM CDT