Big Lost River below Mackay Reservoir
17 mi- Level
- 1.5 ft
- Flow
- 70 cfs
Forecast peak 1.5 ft Sat 12 PM
Reading from Sat 10:45 AM · NWS gauge page
Observed 10:47 AM MDT at KSUN
Lost River, ID weather
Overcast and 39°4°.
Today: low 25°−4° (likely 24°−4° to 32°0°), high 50°10° (likely 43°6° to 50°10°).
Now 39°4°
Cloudy · Feels like 35°2°
- Wind
- 6 mph9 km/h
- From the west-northwest. Up to 6 mph10 km/h through 11 PM
- Dew point
- 36°2°
- Comfortable · down to 27°−3° by 10 PM (dry)
- UV index
- 2Low
- Moderate 1–4 PM · peak 3
- Air quality
- 21Good
- Main pollutant: Ozone
- Pressure (notable)
- 30.33 inHg1027 hPa
- Falling fast · −0.10 inHg−3.5 hPa in 3 h, change coming
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
5°3° cooler than this time yesterday (45°7° then, 39°4° now)
Good hours for
This afternoonUp to 49°9° by 4 PM · Clear
TonightDown to 27°−3° by 5 AM · freezing, low 27°−3° · Clear
Tomorrow morningUp to 44°7° by 11 AM · freezing, low 26°−3° · Clear
Tomorrow afternoonUp to 54°12° by 3 PM · Clear
Tomorrow nightDown to 30°−1° by 5 AM · freezing, low 30°−1° · Mostly cloudy
Monday morningUp to 36°2° by 10 AM · freezing, low 28°−2° · Mostly cloudy
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 11a | Mostly sunny | 40°4° (likely 36°2° to 40°4°) | 40°4° | 0% | 2 mph3 km/h from E, gusts 2 mph4 km/h | 63% | 34% | 2 |
| Sat 12p | Sunny | 44°7° (likely 38°3° to 44°7°) | 44°7° | 0% | 2 mph3 km/h from SE, gusts 4 mph6 km/h | 56% | 6% | 2 |
| Sat 1p | Sunny | 47°8° (likely 41°5° to 47°8°) | 46°8° | 0% | 3 mph5 km/h from SE, gusts 5 mph8 km/h | 57% | 3% | 3 |
| Sat 2p | Sunny | 48°9° (likely 42°6° to 48°9°) | 46°8° | 0% | 5 mph8 km/h from ESE, gusts 5 mph8 km/h | 54% | 3% | 3 |
| Sat 3p | Sunny | 48°9° (likely 43°6° to 48°9°) | 45°7° | 0% | 6 mph10 km/h from ESE, gusts 5 mph8 km/h | 52% | 5% | 3 |
| Sat 4p | Sunny | 49°9° (likely 43°6° to 49°9°) | 47°8° | 0% | 6 mph10 km/h from SE, gusts 5 mph9 km/h | 53% | 6% | 2 |
| Sat 5p | Sunny | 48°9° (likely 42°6° to 48°9°) | 45°7° | 0% | 6 mph10 km/h from SSE, gusts 5 mph8 km/h | 56% | 9% | 1 |
| Sat 6p | Sunny | 45°7° (likely 40°4° to 45°7°) | 43°6° | 0% | 5 mph8 km/h from S, gusts 5 mph8 km/h | 63% | 7% | 1 |
| Sat 7p | Clear | 42°6° (likely 36°2° to 42°6°) | 42°6° | 0% | 2 mph3 km/h from SSW, gusts 4 mph6 km/h | 71% | 2% | 0 |
| Sat 8p | Clear | 37°3° (likely 34°1° to 37°3°) | 37°3° | 0% | 2 mph3 km/h from NNW, gusts 2 mph4 km/h | 76% | 7% | 0 |
| Sat 9p | Clear | 35°2° (likely 33°1° to 36°2°) | 35°2° | 0% | 2 mph3 km/h from NW, gusts 2 mph3 km/h | 76% | 0% | 0 |
| Sat 10p | Clear | 34°1° (likely 32°0° to 35°2°) | 31°−1° | 0% | 3 mph5 km/h from NW, gusts 4 mph6 km/h | 76% | 5% | 0 |
| Sat 11p | Clear | 33°1° (likely 30°−1° to 35°2°) | 30°−1° | 0% | 3 mph5 km/h from NNW, gusts 4 mph7 km/h | 75% | 12% | 0 |
| Sun 12a | Mostly clear | 32°0° (likely 29°−2° to 35°2°) | 29°−2° | 0% | 3 mph5 km/h from NNW, gusts 4 mph7 km/h | 73% | 19% | 0 |
| Sun 1a | Clear | 31°−1° (likely 28°−2° to 35°2°) | 31°−1° | 0% | 2 mph3 km/h from NNW, gusts 3 mph5 km/h | 71% | 17% | 0 |
| Sun 2a | Clear | 31°−1° (likely 28°−2° to 34°1°) | 31°−1° | 0% | 2 mph3 km/h from WNW, gusts 3 mph5 km/h | 71% | 6% | 0 |
| Sun 3a | Clear | 30°−1° (likely 29°−2° to 34°1°) | 30°−1° | 0% | 1 mph2 km/h from NW, gusts 3 mph5 km/h | 70% | 1% | 0 |
| Sun 4a | Clear | 30°−1° (likely 29°−2° to 34°1°) | 30°−1° | 0% | 1 mph2 km/h from NNW, gusts 3 mph4 km/h | 72% | 0% | 0 |
| Sun 5a | Clear | 27°−3° (likely 27°−3° to 35°2°) | 27°−3° | 0% | 1 mph2 km/h from NW, gusts 3 mph5 km/h | 76% | 0% | 0 |
| Sun 6a | Clear | 27°−3° (likely 27°−3° to 35°2°) | 27°−3° | 0% | 1 mph2 km/h from NW, gusts 3 mph5 km/h | 77% | 1% | 0 |
| Sun 7a | Clear | 27°−3° (likely 27°−3° to 35°2°) | 27°−3° | 0% | 1 mph2 km/h from NW, gusts 3 mph5 km/h | 75% | 2% | 0 |
| Sun 8a | Sunny | 26°−3° (likely 26°−3° to 35°2°) | 26°−3° | 0% | 1 mph2 km/h from NW, gusts 3 mph5 km/h | 76% | 0% | 0 |
| Sun 9a | Sunny | 29°−2° (likely 29°−2° to 36°2°) | 29°−2° | 0% | 2 mph3 km/h from N, gusts 4 mph6 km/h | 70% | 0% | 0 |
| Sun 10a | Sunny | 39°4° (likely 34°1° to 40°4°) | 39°4° | 0% | 2 mph3 km/h from N, gusts 4 mph7 km/h | 56% | 0% | 1 |
| Sun 11a | Sunny | 44°7° (likely 40°4° to 44°7°) | 44°7° | 0% | 2 mph3 km/h from N, gusts 3 mph5 km/h | 56% | 2% | 2 |
| Sun 12p | Sunny | 49°9° (likely 43°6° to 49°9°) | 47°8° | 0% | 5 mph8 km/h from SE, gusts 4 mph6 km/h | 51% | 3% | 3 |
| Sun 1p | Sunny | 51°11° (likely 45°7° to 51°11°) | 51°11° | 0% | 5 mph8 km/h from SE, gusts 6 mph10 km/h | 53% | 6% | 4 |
| Sun 2p | Sunny | 52°11° (likely 46°8° to 52°11°) | 52°11° | 0% | 5 mph8 km/h from SE, gusts 7 mph11 km/h | 51% | 6% | 4 |
| Sun 3p | Sunny | 54°12° (likely 47°8° to 54°12°) | 54°12° | 0% | 8 mph13 km/h from SSE, gusts 8 mph14 km/h | 50% | 8% | 4 |
| Sun 4p | Sunny | 52°11° (likely 46°8° to 52°11°) | 52°11° | 0% | 8 mph13 km/h from SSE, gusts 9 mph14 km/h | 50% | 12% | 3 |
| Sun 5p | Mostly sunny | 51°11° (likely 45°7° to 51°11°) | 51°11° | 0% | 8 mph13 km/h from SSE, gusts 9 mph15 km/h | 54% | 55% | 2 |
| Sun 6p | Mostly cloudy | 48°9° (likely 44°7° to 48°9°) | 46°8° | 0% | 5 mph8 km/h from SSE, gusts 8 mph13 km/h | 62% | 61% | 1 |
| Sun 7p | Mostly cloudy | 42°6° (likely 39°4° to 44°7°) | 39°4° | 0% | 5 mph8 km/h from SSE, gusts 5 mph8 km/h | 70% | 60% | 0 |
| Sun 8p | Cloudy | 38°3° (likely 37°3° to 42°6°) | 34°1° | 0% | 5 mph8 km/h from SSE, gusts 2 mph4 km/h | 76% | 71% | 0 |
| Sun 9p | Partly cloudy | 37°3° (likely 36°2° to 41°5°) | 34°1° | 0% | 3 mph5 km/h from SW, gusts 1 mph2 km/h | 79% | 85% | 0 |
| Sun 10p | Cloudy | 36°2° (likely 35°2° to 40°4°) | 33°1° | 0% | 3 mph5 km/h from SW, gusts 1 mph2 km/h | 79% | 67% | 0 |
| Sun 11p | Cloudy | 35°2° (likely 34°1° to 39°4°) | 32°0° | 0% | 3 mph5 km/h from SW, gusts 1 mph1 km/h | 76% | 92% | 0 |
| Mon 12a | Cloudy | 35°2° (likely 34°1° to 39°4°) | 35°2° | 0% | 2 mph3 km/h from W, gusts 1 mph2 km/h | 74% | 89% | 0 |
| Mon 1a | Cloudy | 34°1° (likely 33°1° to 39°4°) | 34°1° | 0% | 2 mph3 km/h from W, gusts 1 mph2 km/h | 74% | 89% | 0 |
| Mon 2a | Partly cloudy | 33°1° (likely 32°0° to 39°4°) | 33°1° | 0% | 2 mph3 km/h from W, gusts 2 mph4 km/h | 76% | 79% | 0 |
| Mon 3a | Partly cloudy | 32°0° (likely 32°0° to 39°4°) | 32°0° | 0% | 2 mph3 km/h from NNW, gusts 2 mph3 km/h | 78% | 71% | 0 |
| Mon 4a | Partly cloudy | 31°−1° (likely 31°−1° to 39°4°) | 31°−1° | 0% | 2 mph3 km/h from NNW, gusts 2 mph3 km/h | 82% | 66% | 0 |
| Mon 5a | Partly cloudy | 30°−1° (likely 30°−1° to 38°3°) | 30°−1° | 0% | 2 mph3 km/h from NNW, gusts 3 mph4 km/h | 86% | 82% | 0 |
| Mon 6a | Cloudy | 29°−2° (likely 29°−2° to 38°3°) | 29°−2° | 0% | 1 mph2 km/h from NNE, gusts 3 mph5 km/h | 89% | 85% | 0 |
| Mon 7a | Cloudy | 28°−2° (likely 28°−2° to 39°4°) | 28°−2° | 0% | 1 mph2 km/h from NNE, gusts 4 mph6 km/h | 90% | 87% | 0 |
| Mon 8a | Cloudy | 29°−2° (likely 29°−2° to 38°3°) | 29°−2° | 0% | 1 mph2 km/h from NNE, gusts 3 mph5 km/h | 89% | 78% | 0 |
| Mon 9a | Cloudy | 30°−1° (likely 30°−1° to 39°4°) | 30°−1° | 0% | 2 mph3 km/h from ENE, gusts 3 mph5 km/h | 86% | 68% | 0 |
| Mon 10a | Cloudy | 36°2° (likely 36°2° to 41°5°) | 36°2° | 0% | 2 mph3 km/h from ENE, gusts 4 mph6 km/h | 79% | 73% | 1 |
Days ahead
Tap a day for its hours and the official wording.
Today, Oct 24. Sunny. High 50°10°, low 25°−4°. Dry. Mostly agree.
Afternoon
noon–6 PM
Sunny, 49°9°Dry
Evening
6 PM–midnight
Clear, 37°3°Dry
Overnight
midnight–6 AM
Clear, 27°−3°Dry
Official NWS forecast
Today: Sunny. High near 50, with temperatures falling to around 48 in the afternoon. Southeast wind 2 to 6 mph.
Tonight: Mostly clear. Low around 25, with temperatures rising to around 27 overnight. Northwest wind 1 to 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 43°6°–50°10°
- Low, likely
- 24°−4°–32°0°
- Wind
- 5 mph9 km/h, gusts 12 mph19 km/h
- UV peak
- 4
Tomorrow, Oct 25. Cloudy. High 54°12°, low 28°−2°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 26°−3°Dry
Afternoon
noon–6 PM
Sunny, 54°12°Dry
Evening
6 PM–midnight
Partly cloudy, 38°3°Dry
Overnight
midnight–6 AM
Partly cloudy, 30°−1°Dry
Official NWS forecast
Day: Sunny. High near 54, with temperatures falling to around 51 in the afternoon. East wind 1 to 8 mph.
Night: Partly cloudy, with a low around 28. West southwest wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 47°8°–54°12°
- Low, likely
- 28°−2°–34°1°
- Wind
- 9 mph14 km/h, gusts 16 mph25 km/h
- UV peak
- 4
Monday, Oct 26. Rain. High 52°11°, low 25°−4°. Rain 0.12 in3 mm, 20% chance. Mostly agree.
Morning
6 AM–noon
Cloudy, 29°−2°Dry
Afternoon
noon–6 PM
Drizzle, 45°7°40% chance · 0.07 in1.9 mm
Evening
6 PM–midnight
Drizzle, 38°4°50% chance · 0.05 in1.2 mm
Overnight
midnight–6 AM
Clear, 28°−2°30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain after noon. Partly sunny, with a high near 52. East wind 1 to 10 mph. Chance of precipitation is 20%.
Night: Rain likely before 9pm, then rain and snow likely between 9pm and midnight, then a chance of rain and snow. Mostly cloudy, with a low around 25. Chance of precipitation is 60%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 42°6°–52°11°
- Low, likely
- 25°−4°–35°2°
- Wind
- 11 mph18 km/h, gusts 27 mph44 km/h
- UV peak
- 4
Tuesday, Oct 27. Snow. High 48°9°, low 22°−6°. Snow 0.01 in0.3 mm, 30% chance. Mostly agree.
Morning
6 AM–noon
Sunny, 26°−3°20% chance
Afternoon
noon–6 PM
Cloudy, 40°5°Dry
Evening
6 PM–midnight
Clear, 33°1°Dry
Overnight
midnight–6 AM
Clear, 26°−3°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of snow before 3pm, then a slight chance of rain and snow. Partly sunny, with a high near 48. Chance of precipitation is 30%.
Night: Partly cloudy, with a low around 22.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 38°3°–48°9°
- Low, likely
- 20°−7°–30°−1°
- Wind
- 16 mph26 km/h
- UV peak
- 4
Wednesday, Oct 28. Partly sunny. High 50°10°, low 26°−3°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 26°−3°Dry
Afternoon
noon–6 PM
Sunny, 43°6°Dry
Evening
6 PM–midnight
Mostly clear, 34°1°Dry
Overnight
midnight–6 AM
Cloudy, 31°0°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 50.
Night: Partly cloudy, with a low around 26.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 40°4°–50°10°
- Low, likely
- 23°−5°–28°−2°
- Wind
- 13 mph20 km/h, gusts 22 mph35 km/h
- UV peak
- 4
Thursday, Oct 29. Partly sunny. High 51°11°, low 28°−2°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 33°0°Dry
Afternoon
noon–6 PM
Cloudy, 44°7°20% chance
Evening
6 PM–midnight
Fog, 37°3°30% chance · 0.02 in0.5 mm
Overnight
midnight–6 AM
Drizzle, 34°1°40% chance · 0.08 in2.1 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 51.
Night: A slight chance of snow after midnight. Mostly cloudy, with a low around 28. Chance of precipitation is 20%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 41°5°–51°11°
- Low, likely
- 27°−3°–32°0°
- Wind
- 11 mph17 km/h, gusts 24 mph39 km/h
- UV peak
- 3
Friday, Oct 30. Snow. High 52°11°, low 28°−2°. Snow 0.17 in4.3 mm, 20% chance. Mostly agree.
Morning
6 AM–noon
Rain, 33°1°40% chance · 0.09 in2.2 mm
Afternoon
noon–6 PM
Drizzle, 39°4°40% chance · 0.02 in0.5 mm
Evening
6 PM–midnight
Partly cloudy, 32°0°30% chance
Overnight
midnight–6 AM
Cloudy, 26°−3°30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of snow. Partly sunny, with a high near 52. Chance of precipitation is 20%.
Night: A chance of snow. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 36°2°–52°11°
- Low, likely
- 22°−6°–32°0°
- Wind
- 9 mph14 km/h, gusts 19 mph31 km/h
- UV peak
- 2
Saturday, Oct 31. Partly sunny. High 34°1°, low 21°−6°. Rain 0.05 in1.3 mm, 30% chance. Mostly agree.
Morning
6 AM–noon
Sunny, 25°−4°30% chance · 0.2 in0.4 cm
Afternoon
noon–6 PM
Sunny, 35°2°30% chance · 0.01 in0.3 mm
Evening
6 PM–midnight
Clear, 26°−4°20% chance
Overnight
midnight–6 AM
Mostly clear, 21°−6°Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 30°−1°–37°3°
- Low, likely
- 19°−7°–23°−5°
- Wind
- 9 mph14 km/h, gusts 17 mph28 km/h
- UV peak
- 4
Sunday, Nov 1. Cloudy. High 38°3°, low 21°−6°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 24°−4°Dry
Afternoon
noon–6 PM
Sunny, 39°4°Dry
Evening
6 PM–midnight
Clear, 29°−1°Dry
Overnight
midnight–6 AM
Mostly clear, 27°−3°Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 36°2°–43°6°
- Low, likely
- 20°−7°–23°−5°
- Wind
- 7 mph12 km/h
- UV peak
- 4
Monday, Nov 2. Cloudy. High 39°4°, low 25°−4°. Dry. Forecasts differ.
Morning
6 AM–noon
Drizzle, 30°−1°Dry
Afternoon
noon–6 PM
Partly sunny, 38°3°Dry
Evening
6 PM–midnight
Mostly clear, 32°0°Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 35°2°–48°9°
- Low, likely
- 25°−4°–26°−3°
- Wind
- 9 mph15 km/h, gusts 27 mph43 km/h
- UV peak
- 1
The outlook
Today
Dry, high 50°, low 25°.
Tomorrow
Dry, high 54°, low 28°, warming up.
Monday
Dry, high 52°, low 25°.
Rest of week
Mostly dry, highs 34–52°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (PIH) (opens in a new tab)
What changed since yesterday
No meaningful changes from yesterday’s forecast.
Radar
Radar data: NOAA MRMS, rendered by forecast.blue
Radar loads when scrolled into view
Rivers
NOAA river gauges within 25 mi
Below flood stage
Antelope Creek (ID) near Darlington
6.8 mi- Level
- 4.5 ft
- Flow
- 21 cfs
Reading from Sat 11 AM · NWS gauge page
Big Lost River at Leslie
15 mi- Level
- 4.1 ft
- Flow
- 45 cfs
Reading from Sat 10:45 AM · NWS gauge page
Big Lost River below Moore Div Nr Moore
15 mi- Level
- 9.4 ft
- Flow
- under 1 cfs
Reading from Sat 10:45 AM · NWS gauge page
Sun & moon
Sun
Sunrise 8:00 AM, sunset 6:36 PM.
- Daylight
- 10 h 36 min
- Losing 2 min 53 s a day; shortest Dec 21, 1 h 41 min less
- Golden hour
- 5:56–6:54 PM
- Morning 7:42–8:40 AM
- Blue hour
- 6:54–7:05 PM
- Morning 7:30–7:42 AM; first light 7:30 AM
Stars tonight? Fair
Clear 7:05 PM–7:32 AM, but the moon is 99% lit and up.
Moon
Waxing gibbous
97% lit · growing
- Today
- sets 6:17 AM · rises 5:36 PM
- Full moon
- Oct 25
- New moon
- Nov 9
