Blackfoot Reservoir Conditions: Weather, Water & Fishing

Blackfoot Reservoir Conditions: Weather, Water & Fishing | LakeRadar

24-Hour Hourly Weather & Wind Timeline

← Scroll Timeline →

Hour-by-hour forecast for Blackfoot Reservoir, next 24 hours
Metric	3p	4p	5p	6p	7p	8p	9p	10p	11p	12a	1a	2a	3a	4a	5a	6a	7a	8a	9a	10a	11a	12p	1p	2p
Temp (°F)	43°	46°	47°	49°	50°	51°	52°	51°	52°	51°	51°	48°	46°	45°	44°	43°	42°	41°	40°	39°	38°	37°	36°	35°
Wind (kts)	8	7	6	5	5	4	5	5	5	5	6	10	13	14	14	13	9	6	4	3	2	2	2	2
Direction	S	S	S	S	S	S	S	S	S	SE	SE	S	S	S	S	S	SW	SW	W	SW	W	SW	SW	SW
Gusts (kts)	14	13	12	10	10	11	11	13	12	11	13	19	23	23	23	21	16	12	8	7	6	7	7	7
Precip %	95%	94%	93%	92%	98%	94%	71%	69%	42%	51%	73%	89%	99%	78%	80%	77%	81%	83%	58%	44%	37%	38%	34%	89%

ForecastView official hourly forecast

Hour-by-hour forecast for Blackfoot Reservoir, next 24 hours
Time	Temp	Wind	Gusts	Precip	Cloud	Condition
Sun, 9 AM MDT	43°F	9 mph S (180°)	16 mph	95%	97%	Rain Showers
Sun, 10 AM MDT	46°F	8 mph S (180°)	15 mph	94%	98%	Rain Showers
Sun, 11 AM MDT	47°F	7 mph S (180°)	14 mph	93%	100%	Rain Showers
Sun, 12 PM MDT	49°F	6 mph S (180°)	12 mph	92%	95%	Rain Showers
Sun, 1 PM MDT	50°F	6 mph SSE (158°)	12 mph	98%	99%	Rain Showers
Sun, 2 PM MDT	51°F	5 mph SSE (158°)	13 mph	94%	96%	Rain Showers
Sun, 3 PM MDT	52°F	6 mph S (180°)	13 mph	71%	95%	Chance Showers And Thunderstorms
Sun, 4 PM MDT	51°F	6 mph S (180°)	15 mph	69%	90%	Chance Showers And Thunderstorms
Sun, 5 PM MDT	52°F	6 mph SSE (158°)	14 mph	42%	90%	Scattered Showers And Thunderstorms
Sun, 6 PM MDT	51°F	6 mph SE (135°)	13 mph	51%	73%	Scattered Showers And Thunderstorms
Sun, 7 PM MDT	51°F	7 mph SE (135°)	15 mph	73%	82%	Chance Showers And Thunderstorms
Sun, 8 PM MDT	48°F	12 mph SSE (158°)	22 mph	89%	98%	Showers And Thunderstorms
Sun, 9 PM MDT	46°F	15 mph SSE (158°)	27 mph	99%	100%	Rain Showers
Sun, 10 PM MDT	45°F	16 mph S (180°)	27 mph	78%	97%	Rain Showers
Sun, 11 PM MDT	44°F	16 mph SSE (158°)	27 mph	80%	89%	Rain Showers
Mon, 12 AM MDT	43°F	15 mph S (180°)	24 mph	77%	95%	Rain Showers
Mon, 1 AM MDT	42°F	10 mph SSW (203°)	18 mph	81%	97%	Rain Showers
Mon, 2 AM MDT	41°F	7 mph SW (225°)	14 mph	83%	98%	Rain Showers
Mon, 3 AM MDT	40°F	5 mph WSW (248°)	9 mph	58%	97%	Chance Rain Showers
Mon, 4 AM MDT	39°F	3 mph SW (225°)	8 mph	44%	94%	Scattered Rain Showers
Mon, 5 AM MDT	38°F	2 mph W (270°)	7 mph	37%	96%	Scattered Rain Showers
Mon, 6 AM MDT	37°F	2 mph SSW (203°)	8 mph	38%	98%	Chance Rain Showers
Mon, 7 AM MDT	36°F	2 mph SSW (203°)	8 mph	34%	98%	Chance Rain Showers
Mon, 8 AM MDT	35°F	2 mph SSW (203°)	8 mph	89%	98%	Rain Showers
Mon, 9 AM MDT	38°F	8 mph S (180°)	16 mph	68%	94%	Rain Showers Likely

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.

7-Day Weather & Wind Forecast

← Scroll Forecast →

Seven-day forecast periods for Blackfoot Reservoir from the official forecast source
Period	Today 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)	53°	34°	51°	32°	48°	28°	50°	27°	55°	27°	57°	29°	59°	31°
Wind	SSE 5 to 9 mph	SSW 2 to 16 mph	SSW 2 to 9 mph	N 2 to 6 mph	NNW 2 to 8 mph	NW 2 to 10 mph	W 1 to 7 mph	SSW 1 to 7 mph	N 0 to 5 mph	ENE 5 mph	ESE 5 mph	SE 3 to 8 mph	SSE 8 mph	S 8 mph
Gusts	16 mph	27 mph	18 mph	10 mph	16 mph	17 mph	15 mph	14 mph	13 mph	10 mph	10 mph	13 mph	17 mph	13 mph
Precip %	98%	99%	89%	66%	72%	63%	23%	12%	3%	2%	1%	3%	3%	3%
Forecast	Rain Showers	Showers And Thunderstorms	Rain Showers	Rain Showers Likely	Rain And Snow Showers Likely	Rain Showers Likely	Slight Chance Rain And Snow Showers	Partly Cloudy	Sunny	Mostly Clear	Sunny	Clear	Sunny	Mostly Clear

Forecast periods from official National Weather Service grid. Detailed 7-Day & Hourly Forecast →

Fishing Conditions & Outlook

Solunar windows, water thermocline & species tactics

Score 44 · Poor

Poor for fishing (44/100), from 5 available inputs. Supporting this: Wind 9 mph from the south. Morning hours (09:00 local). Working against it: 95% chance of precipitation is likely. 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.

Prime Solunar Window

6:00 AM MDT – 12:00 PM MDT

Water Layer Temp

Sensor Pending

Surface Chop

6 mph

Barometer Trend

29.76 inHg

Verified Game Fish Species (1):

🐟European Carp

View Full Fishing Forecast & Solunar Times →Fishing methodology →

Boating & Sailing Outlook

Surface chop, sustained knots, gusts & launch facilities

Boating 31Sailing 38

Motorized Boating

Launch Access

Very Poor / Avoid for boating (31/100), from 4 available inputs. Supporting this: Wind 9 mph from the south. Gusts to 16 mph. Working against it: Active severe alert: Flood Watch. 95% chance of precipitation is likely. 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.

Surface state: Glass / Light Ripple

Boating Outlook & Ramps Directory →

Sailing & Wind Trim

5 kts (6 mph)

Poor for sailing (38/100), from 4 available inputs. Supporting this: Wind 9 mph from the S is in the preferred sailing range. Gusts exceed sustained wind by 7 mph, making the breeze puffy. Working against it: Active severe alert: Flood Watch. 95% chance of precipitation is likely. The forecast mentions thunderstorms, which carries a risk penalty. Not available from a verified source for this lake: visibility. Confidence is high (88%).

Kayaking, Paddling & Swimming

Paddle drag, thermal comfort & cold water immersion safety

Paddling 33Swimming --

Paddlecraft Readiness

Glassy Surface

Very Poor / Avoid for kayaking (33/100), from 5 available inputs. Supporting this: Wind 9 mph from the south. Gusts to 16 mph. Working against it: Active severe alert: Flood Watch. 95% chance of precipitation is likely. The forecast mentions thunderstorms, which carries a risk penalty. Confidence is high (90%).

Immersion: Wear USCG Approved Life Jacket

Paddlecraft Guidelines & Launch Points →

Swimming & Immersion

Not monitored

Water temperature is not available from a verified source for this lake. No swimming score is shown without it.

Water Temperature & 30-Day History →

Lake Guide & Verified Facts

Visitor Essentials, Seasonal Guide & Hydrographic Profile

Blackfoot Reservoir is a prominent freshwater reservoir in ID, offering expansive open water for waterskiing, cruising, and tournament angling. The lake's deep basins and shallow flats provide varied habitat for local fish species. Conservation initiatives and public access oversight are overseen by state and local natural resource agencies.

Surface Area

16,900 acres (26 sq mi)

Max Depth

Not documented

Surface Elevation

Not documented

Managing Authority

State & Local Authorities

Classification

Reservoir

State Jurisdiction

Visitor Essentials · Know Before You Go

Fishing Licensing (IDFG)

Valid freshwater sport fishing license issued by Idaho Department of Fish and Game (IDFG) is required for anglers age 14+. Digital license on mobile is accepted.

Boating & AIS Biosecurity Protocol

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 Recreation & Access Pass

Public shoreline and boating access managed by State & Local Authorities. Verify seasonal gate hours, launch fees, and parking rules before travel.

Primary Water Recreation Profile

High-speed motorboating, pontoon cruising, wakeboarding, and water skiing across main channels. Target gamefish include European Carp. Morning hours typically provide optimal glassy conditions for kayak and stand-up paddleboard (SUP) touring.

Seasonal Recreation & Climate Windows

Summer Peak (Jun–Aug)Peak Season

Warm water temperatures, peak swimming, active watersports, and open full-service campgrounds. Highest weekly attendance; plan early arrivals on summer weekends.

Spring & Fall ShoulderPrime Angling

Spring pre-spawn and fall feeding transitions create prime trophy angling conditions. Cooler air, lower boat traffic, and vibrant seasonal shoreline foliage.

Winter Season (Nov–Mar)Off-Season

Northern cold winter conditions with freezing air temperatures and potential surface ice formation. Ramps and water systems may be winterized. Confirm open status before visiting.

Get Directions (GPS) ↗Managing Authority Portal ↗

All geographical facts sourced from official agency recordsView sources →

Blackfoot Reservoir Conditions

Flood Watch

Quick Conditions

LakeRadar Score

24-Hour Hourly Weather & Wind Timeline

7-Day Weather & Wind Forecast

Water Level & Hydrographic Baseline

Water Temperature (Surface)

Fishing Conditions & Outlook

Boating & Sailing Outlook

Kayaking, Paddling & Swimming

Interactive Map & Navigation Radar

Coordinates and access points

Public Access & Facilities

Boating & Water Regulations

Lake Guide & Verified Facts

Official alerts

Flood Watch

Quick Conditions

LakeRadar Score

24-Hour Hourly Weather & Wind Timeline

7-Day Weather & Wind Forecast

Water Level & Hydrographic Baseline

Water Temperature (Surface)

Fishing Conditions & Outlook

Boating & Sailing Outlook

Kayaking, Paddling & Swimming

Interactive Map & Navigation Radar

Coordinates and access points

Public Access & Facilities

Boating & Water Regulations

Lake Guide & Verified Facts

Related Lakes

Sources and methodology