Eastern Idaho Reservoirs at Island Park
8.5 mi- Level
- 6283 ft
Forecast peak 6285 ft Tue 5 AM
Reading from Sat 6:45 PM · NWS gauge page
Appearance
Observed 7:55 PM MDT at KRXE
Clear and 43°6°, freeze watch tonight, low 23°−5°.
Today: low 22°−6° (likely 22°−6° to 26°−3°), high 44°7° (likely 42°6° to 46°8°).
Now 43°6°
Clear
Light snow now, through the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 8p | Clear | 32°0° (likely 32°0° to 35°2°) | 32°0° | 0% | 1 mph2 km/h from N, gusts 4 mph7 km/h | 83% | 9% | 0 |
| Sat 9p | Clear | 30°−1° (likely 30°−1° to 35°2°) | 30°−1° | 0% | 2 mph3 km/h from N, gusts 3 mph4 km/h | 86% | 10% | 0 |
| Sat 10p | Clear | 29°−2° (likely 28°−2° to 34°1°) | 25°−4° | 0% | 3 mph5 km/h from N, gusts 4 mph6 km/h | 87% | 12% | 0 |
| Sat 11p | Mostly clear | 28°−2° (likely 27°−3° to 33°1°) | 24°−4° | 0% | 3 mph5 km/h from N, gusts 5 mph8 km/h | 91% | 16% | 0 |
| Sun 12a | Mostly clear | 27°−3° (likely 26°−3° to 33°1°) | 23°−5° | 0% | 3 mph5 km/h from N, gusts 5 mph8 km/h | 93% | 20% | 0 |
| Sun 1a | Mostly clear | 26°−3° (likely 26°−3° to 33°1°) | 22°−6° | 0% | 3 mph5 km/h from N, gusts 5 mph8 km/h | 96% | 17% | 0 |
| Sun 2a | Mostly clear | 25°−4° (likely 25°−4° to 33°1°) | 19°−7° | 0% | 5 mph8 km/h from N, gusts 5 mph8 km/h | 96% | 17% | 0 |
| Sun 3a | Mostly clear | 25°−4° (likely 25°−4° to 33°1°) | 19°−7° | 0% | 5 mph8 km/h from N, gusts 5 mph8 km/h | 94% | 16% | 0 |
| Sun 4a | Mostly clear | 24°−4° (likely 24°−4° to 33°1°) | 18°−8° | 0% | 5 mph8 km/h from N, gusts 5 mph8 km/h | 93% | 15% | 0 |
| Sun 5a | Mostly clear | 24°−4° (likely 24°−4° to 32°0°) | 18°−8° | 0% | 5 mph8 km/h from NNE, gusts 6 mph10 km/h | 91% | 15% | 0 |
| Sun 6a | Mostly clear | 24°−4° (likely 24°−4° to 33°1°) | 18°−8° | 0% | 5 mph8 km/h from NNE, gusts 6 mph9 km/h | 93% | 14% | 0 |
| Sun 7a | Mostly clear | 23°−5° (likely 23°−5° to 33°1°) | 16°−9° | 0% | 6 mph10 km/h from N, gusts 6 mph9 km/h | 95% | 13% | 0 |
| Sun 8a | Sunny | 23°−5° (likely 23°−5° to 33°1°) | 16°−9° | 0% | 6 mph10 km/h from N, gusts 6 mph9 km/h | 96% | 14% | 0 |
| Sun 9a | Mostly sunny | 26°−3° (likely 26°−3° to 34°1°) | 19°−7° | 0% | 6 mph10 km/h from NNW, gusts 6 mph9 km/h | 95% | 13% | 0 |
| Sun 10a | Sunny | 33°1° (likely 33°1° to 38°3°) | 30°−1° | 0% | 3 mph5 km/h from N, gusts 5 mph8 km/h | 88% | 6% | 1 |
| Sun 11a | Sunny | 38°3° (likely 38°3° to 42°6°) | 36°2° | 0% | 3 mph5 km/h from N, gusts 6 mph10 km/h | 74% | 3% | 2 |
| Sun 12p | Sunny | 44°7° (likely 43°6° to 47°8°) | 42°6° | 0% | 3 mph5 km/h from N, gusts 6 mph10 km/h | 59% | 0% | 4 |
| Sun 1p | Sunny | 47°8° (likely 45°7° to 50°10°) | 47°8° | 0% | 2 mph3 km/h from N, gusts 5 mph8 km/h | 52% | 0% | 4 |
| Sun 2p | Sunny | 49°9° (likely 47°8° to 52°11°) | 49°9° | 0% | 1 mph2 km/h from SSW, gusts 6 mph10 km/h | 45% | 0% | 4 |
| Sun 3p | Sunny | 51°11° (likely 47°8° to 53°12°) | 51°11° | 0% | 1 mph2 km/h from S, gusts 6 mph10 km/h | 43% | 2% | 4 |
| Sun 4p | Sunny | 50°10° (likely 48°9° to 52°11°) | 50°10° | 0% | 2 mph3 km/h from SSW, gusts 6 mph9 km/h | 42% | 4% | 3 |
| Sun 5p | Sunny | 49°9° (likely 47°8° to 50°10°) | 49°9° | 0% | 2 mph3 km/h from SSW, gusts 4 mph6 km/h | 47% | 5% | 2 |
| Sun 6p | Clear | 44°7° (likely 43°6° to 46°8°) | 44°7° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 57% | 0% | 1 |
| Sun 7p | Clear | 37°3° (likely 37°3° to 42°6°) | 37°3° | 0% | 0 mph0 km/h, gusts 5 mph7 km/h | 72% | 0% | 0 |
| Sun 8p | Clear | 34°1° (likely 34°1° to 40°4°) | 34°1° | 0% | 0 mph0 km/h, gusts 7 mph12 km/h | 81% | 3% | 0 |
| Sun 9p | Clear | 32°0° (likely 32°0° to 39°4°) | 32°0° | 0% | 0 mph0 km/h, gusts 7 mph12 km/h | 85% | 34% | 0 |
| Sun 10p | Clear | 31°−1° (likely 31°−1° to 37°3°) | 31°−1° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 87% | 34% | 0 |
| Sun 11p | Clear | 29°−2° (likely 29°−2° to 36°2°) | 29°−2° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 92% | 16% | 0 |
| Mon 12a | Clear | 29°−2° (likely 29°−2° to 36°2°) | 29°−2° | 0% | 1 mph2 km/h from ENE, gusts 4 mph6 km/h | 92% | 39% | 0 |
| Mon 1a | Clear | 28°−2° (likely 28°−2° to 36°2°) | 28°−2° | 0% | 1 mph2 km/h from ENE, gusts 2 mph4 km/h | 96% | 40% | 0 |
| Mon 2a | Partly cloudy | 27°−3° (likely 27°−3° to 36°2°) | 27°−3° | 0% | 1 mph2 km/h from ENE, gusts 2 mph4 km/h | 96% | 45% | 0 |
| Mon 3a | Partly cloudy | 27°−3° (likely 27°−3° to 36°2°) | 27°−3° | 0% | 2 mph3 km/h from E, gusts 2 mph3 km/h | 93% | 48% | 0 |
| Mon 4a | Partly cloudy | 27°−3° (likely 27°−3° to 36°2°) | 27°−3° | 0% | 2 mph3 km/h from E, gusts 3 mph4 km/h | 93% | 49% | 0 |
| Mon 5a | Cloudy | 27°−3° (likely 27°−3° to 36°2°) | 27°−3° | 0% | 2 mph3 km/h from E, gusts 2 mph3 km/h | 91% | 70% | 0 |
| Mon 6a | Cloudy | 26°−3° (likely 26°−3° to 36°2°) | 26°−3° | 0% | 2 mph3 km/h from ESE, gusts 3 mph4 km/h | 92% | 80% | 0 |
| Mon 7a | Cloudy | 27°−3° (likely 27°−3° to 36°2°) | 27°−3° | 0% | 2 mph3 km/h from ESE, gusts 4 mph7 km/h | 96% | 86% | 0 |
| Mon 8a | Cloudy | 29°−2° (likely 29°−2° to 35°2°) | 29°−2° | 0% | 2 mph3 km/h from ESE, gusts 5 mph7 km/h | 97% | 92% | 0 |
| Mon 9a | Cloudy | 31°−1° (likely 31°−1° to 36°2°) | 31°−1° | 0% | 2 mph3 km/h from ESE, gusts 4 mph7 km/h | 94% | 95% | 0 |
| Mon 10a | Cloudy | 35°2° (likely 35°2° to 40°4°) | 35°2° | 0% | 2 mph3 km/h from ESE, gusts 9 mph14 km/h | 87% | 97% | 1 |
| Mon 11a | Cloudy | 40°4° (likely 40°4° to 44°7°) | 40°4° | 0% | 2 mph3 km/h from ESE, gusts 11 mph17 km/h | 78% | 89% | 2 |
| Mon 12p | Cloudy | 44°7° (likely 44°7° to 45°7°) | 39°4° | 5% | 8 mph13 km/h from S, gusts 14 mph23 km/h | 69% | 92% | 3 |
| Mon 1p | Cloudy | 46°8° (likely 46°8° to 47°8°) | 42°6° | 5% | 8 mph13 km/h from S, gusts 18 mph29 km/h | 64% | 71% | 3 |
| Mon 2p | Mostly cloudy | 47°8° (likely 47°8° to 49°9°) | 43°6° | 5% | 8 mph13 km/h from S, gusts 19 mph31 km/h | 60% | 58% | 4 |
| Mon 3p | Mostly cloudy | 47°8° (likely 47°8° to 49°9°) | 43°6° | 5% | 9 mph14 km/h from SSW, gusts 21 mph33 km/h | 60% | 57% | 4 |
| Mon 4p | Mostly cloudy | 46°8° (likely 46°8° to 49°9°) | 41°5° | 5% | 9 mph14 km/h from SSW, gusts 20 mph32 km/h | 62% | 62% | 3 |
| Mon 5p | Cloudy | 44°7° (likely 44°7° to 48°9°) | 39°4° | 5% | 9 mph14 km/h from SSW, gusts 18 mph29 km/h | 67% | 55% | 2 |
| Mon 6p | Rain | 41°5° (likely 41°5° to 46°8°) | 39°4° | 50%, 0.03 in0.8 mm | 3 mph5 km/h from S, gusts 10 mph16 km/h | 73% | 56% | 1 |
| Mon 7p | Rain | 38°3° (likely 35°2° to 43°6°) | 36°2° | 50%, 0.03 in0.8 mm | 3 mph5 km/h from S, gusts 8 mph13 km/h | 81% | 74% | 0 |
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Tonight: Mostly clear. Low around 22, with temperatures rising to around 24 overnight. North wind 1 to 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Day: Sunny. High near 51, with temperatures falling to around 49 in the afternoon. North northwest wind 1 to 6 mph.
Night: Partly cloudy. Low around 25, with temperatures rising to around 27 overnight. East wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
70% chance · 0.13 in3.2 mm
Overnight
midnight–6 AM
90% chance · 0.9 in2.4 cm
Official NWS forecast
Day: Partly sunny, with a high near 47. South wind 2 to 9 mph, with gusts as high as 20 mph.
Night: A chance of rain before midnight, then rain and snow. Mostly cloudy, with a low around 24. South southeast wind 3 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Forecasts agreeIndependent forecasts are close; the range is narrow.
Morning
6 AM–noon
90% chance · 0.3 in0.7 cm
Afternoon
noon–6 PM
70% chance · 0.2 in0.4 cm
Evening
6 PM–midnight
50% chance · 0.02 in0.4 mm
Overnight
midnight–6 AM
30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Snow. Cloudy, with a high near 38. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Night: A chance of snow before midnight. Mostly cloudy, with a low around 21. Chance of precipitation is 30%. Little or no snow accumulation expected.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 42.
Night: Partly cloudy, with a low around 23.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
30% chance
Afternoon
noon–6 PM
50% chance · 0.2 in0.4 cm
Evening
6 PM–midnight
50% chance · 0.2 in0.4 cm
Overnight
midnight–6 AM
60% chance · 0.1 in0.3 cm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of snow before noon, then a chance of rain and snow. Partly sunny, with a high near 44. Chance of precipitation is 50%.
Night: Rain and snow likely. Mostly cloudy, with a low around 26. Chance of precipitation is 60%. Little or no snow accumulation expected.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
60% chance · 0.07 in1.7 mm
Afternoon
noon–6 PM
60% chance · 0.1 in2.4 mm
Evening
6 PM–midnight
50% chance · 0.1 in2.5 mm
Overnight
midnight–6 AM
40% chance · 0.2 in0.6 cm
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain and snow likely. Mostly cloudy, with a high near 44. Chance of precipitation is 60%. Little or no snow accumulation expected.
Night: Rain and snow likely. Mostly cloudy, with a low around 25. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
30% chance · 0.2 in0.4 cm
Afternoon
noon–6 PM
30% chance · 0.2 in0.4 cm
Evening
6 PM–midnight
30% chance · 0.02 in0.6 mm
Overnight
midnight–6 AM
20% chance · 0.3 in0.8 cm
Hours this far out come from computer models only.
Official NWS forecast
Day: Snow likely. Mostly cloudy, with a high near 42. Chance of precipitation is 60%. New snow accumulation of less than half an inch possible.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
20% chance · 0.1 in0.4 cm
Afternoon
noon–6 PM
20% chance
Evening
6 PM–midnight
20% chance · 0.2 in0.5 cm
Overnight
midnight–6 AM
20% chance · 0.2 in0.5 cm
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.
Morning
6 AM–noon
20% chance
Afternoon
noon–6 PM
30% chance · 0.01 in0.3 mm
Evening
6 PM–midnight
30% chance
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.
Dry, high 44°, low 22°.
Dry, high 51°, low 25°, warming up.
Dry, high 47°, low 24°, cooling off.
Highs 35–44°; chance of precipitation on Tuesday, Thursday, Friday, Saturday.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (PIH) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Forecast peak 6285 ft Tue 5 AM
Reading from Sat 6:45 PM · NWS gauge page
Reading from Sat 6:45 PM · NWS gauge page
Reading from Sat 7:30 PM · NWS gauge page
Reading from Sat 6:45 PM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
Tonight’s low: 23°−5°
Overnight low near 23°F — not yet at drip-the-faucets cold, but worth watching if it's forecast to drop further.
About 73% less heating than a typical week.
Heating degree days, base 65°F
47, 17 and 5°F are the test points heat pumps are rated at. About 14 hours are near freezing and damp, when outdoor units defrost more often.
Dry air outside (dew point 37°F).
No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.
Today’s expected high is 3°2° colder than typical.
Island Park weather by month: normals, records, snow and freeze dates
Sunrise 7:52 AM, sunset 6:25 PM.
Mostly clear 8:45 PM–7:23 AM, but the moon is 99% lit and up.
Waxing gibbous
98% lit · growing