Weather in Sun Valley, ID
Sun Valley, Tuesday, 20 October, 02:50
Clear. Feels like 43°. High 63°, low 34°.
Monthly outlook for Sun Valley, ID: average high 52.2°, average low 35.3°. That is 1.3° above the climate normal for October. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 20 October (63.4°), the coolest 25 October (23.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 53.7° | 51.9° | +1° |
| 30 October – 8 November | 49.7° | 46° | +2.1° |
| 9 November – 18 November | at normal | 40.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Hailey (12 mi).
0.04
Sun Valley, Wednesday, 21 October
Light rain. High 63°, low 33°.
0.46Sun Valley, Thursday, 22 October
Rain. High 53°, low 37°.
0.1Sun Valley, Friday, 23 October
Light rain. High 42°, low 33°.
0
Sun Valley, Saturday, 24 October
Overcast. High 40°, low 29°.
0
Sun Valley, Sunday, 25 October
Clear. High 51°, low 24°.
0Sun Valley, Monday, 26 October
Clear. High 57°, low 38°.
0
Sun Valley, Tuesday, 27 October
Mostly clear. High 60°, low 38°.
0Sun Valley, Wednesday, 28 October
Clear. High 57°, low 38°.
0.01Sun Valley, Thursday, 29 October
Light rain. High 50°, low 40°.
0Sun Valley, Friday, 30 October
Overcast. High 52°, low 36°.
0.16Sun Valley, Saturday, 31 October
Light rain. High 46°, low 39°.
0.2
Sun Valley, Sunday, 1 November
Snow. High 45°, low 33°.
0Sun Valley, Monday, 2 November
Overcast. High 53°, low 32°.
0Sun Valley, Tuesday, 3 November
Mostly clear. High 58°, low 39°.
0.14Sun Valley, Wednesday, 4 November
Light rain. High 45°, low 42°.
0.04Sun Valley, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07
Sun Valley, Friday, 6 November
Climate normal for this date — 60-year average.
0.04Sun Valley, Saturday, 7 November
Climate normal for this date — 60-year average.
0.07Sun Valley, Sunday, 8 November
Climate normal for this date — 60-year average.
0.07Sun Valley, Monday, 9 November
Climate normal for this date — 60-year average.
0.04Sun Valley, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Sun Valley, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.05Sun Valley, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Sun Valley, Friday, 13 November
Climate normal for this date — 60-year average.
0.05Sun Valley, Saturday, 14 November
Climate normal for this date — 60-year average.
0.04Sun Valley, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Sun Valley, Monday, 16 November
Climate normal for this date — 60-year average.
0.06
Sun Valley, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08Sun Valley, Wednesday, 18 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Sun Valley, ID are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Sun Valley, ID since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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