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Preston, ID · Franklin County
Right Now
Clear
Water
77°
Wind
3 mph
SW
Gusts
7 mph
Pressure
29.75
falling
Forecast - Tue, Jun 23
High / Low
86° / 58°
Wind
5 mph
gusts 15 mph
Precip
0%
UV
10
Sunrise
11:52 AM
Sunset
3:07 AM
Every forecast metric for the week ahead — plus AI-picked best days for fishing, boating, swimming, and paddling.
Instant recommendations based on wind, precip, pressure, solunar, and temperature.
Best for Fishing
Mon, Mon, Jun 29
Mon, Jun 29 scores 73/100 — Solunar 5/5, Pressure rising.
Best for Boating
Tue, Tue, Jun 23
Tue, Jun 23 scores 90/100 — Wind 8 mph, Rain 0%.
Best for Swimming
Tue, Tue, Jun 23
Tue, Jun 23 scores 75/100 — Air 86°F, Rain 0%.
Best for Paddling
Tue, Tue, Jun 23
Tue, Jun 23 scores 85/100 — Wind 8 mph, Rain 0%.
Ask the AI assistant about this week:
Swipe to see all 9 days
| Metric | Tue23 | Wed24 | Thu25 | Fri26 | Sat27 | Sun28 | Mon29 | Tue30 | Wed1 |
|---|---|---|---|---|---|---|---|---|---|
| Condition | Mostly Clear | Partly Cloudy | Thunderstorms | Cloudy | Drizzle | Rain | Mostly Clear | Mostly Clear | Clear |
| High / Low | 86°/58° | 89°/63° | 80°/59° | 84°/58° | 65°/52° | 55°/44° | 66°/38° | 78°/46° | 80°/54° |
| Precip | 0% | 34% | 52% | 45% | 55% | 48% | 35% | 0% | 0% |
| Wind | 8 mphgust 15 | 11 mphgust 20 | 10 mphgust 20 | 18 mphgust 28 | 12 mphgust 27 | 9 mphgust 18 | 10 mphgust 20 | 13 mphgust 19 | 11 mphgust 20 |
| Pressure | 29.86" stable | 29.74" falling | 29.75" stable | 29.59" falling | 29.62" rising | 29.79" rising | 29.92" rising | 29.82" falling | 29.87" rising |
| UV Index | 10 | 8 | 7 | 5 | 6 | 5 | 6 | 7 | 9 |
| Sunrise | 11:52 AM | 11:52 AM | 11:52 AM | 11:53 AM | 11:53 AM | 11:53 AM | 11:54 AM | 11:54 AM | 11:55 AM |
| Sunset | 3:07 AM | 3:07 AM | 3:07 AM | 3:07 AM | 3:07 AM | 3:07 AM | 3:07 AM | 3:07 AM | 3:07 AM |
| Bite Rating | 2/5first quarter | 3/5first quarter | 2/5waxing gibbous | 2/5waxing gibbous | 3/5waxing gibbous | 2/5waxing gibbous | 5/5FULL | 4/5FULL | 3/5FULL |
Today Read
Johnson ReservoirWind read
Calm
5 mph avg
Water read
77°
Warm-water bite
Air range
58° / 86°
today
Precip
0%
low concern
Today's forecast for Johnson Reservoir has calm wind, 58F to 86F air temperatures, 0% chance of precipitation, and 77F water.
AI read · today
Warm water pushes the plan toward oxygen, shade, depth changes, and low light. The planning constraint is weak timing.
Reads 9 live data sources for this lake — tap a stat or ask anything to see its work.
Fishing Forecast
first quarter
Major
2:26 AM - 4:56 AM
Minor
9:08 PM - 10:38 PM
Detailed temperature readings across your lake.
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Fish Species
5Water Temperature History
Current
77°
Jul 5
Low
33°
Dec 7
Average
59°
Last 12 Months
Warmest avg: July (82°F)
Coolest avg: January (35°F)
Rapid warming: March → April (+14°F)
Sharpest cooling: August → September (-17°F)
Wind speed, gusts, and pressure trends for trip timing.
Swipe days or tap points
6am - 1pm
Peak Wind
8 mph
6am
Peak Gust
15 mph
highest gust
Pressure
29.85 inHg
rising
Visibility
44 mi
0% clouds
Tap chart for details, swipe left or right for different days.Tap chart for details • Swipe for different days
Pressure stability helps plan windows
Tap chart points for pressure details
Nearby Lakes
Fishing Forecast
2/5first quarter
Water at 77°F -- warm-water species active.
Fish Species
5Nearby Lakes
FAQ
Johnson Reservoir covers 42.00 acres (0.07 square miles) with a maximum depth of 3.65 meters (~12 feet).
Johnson Reservoir is located in Preston, Franklin County, ID. It is accessible to the public for outdoor activities.