Weather in Long Valley, SD
Long Valley, Sunday, 18 October, 02:16
Clear. Feels like 48°. High 69°, low 47°.
Monthly outlook for Long Valley, SD: average high 66.4°, average low 46.6°. That is 5.3° above the climate normal for October. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 23 October (78.6°), the coolest 25 October (36.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 66.6° | 59.1° | +4.2° |
| 28 October – 6 November | 66° | 52.8° | +7.4° |
| 7 November – 16 November | at normal | 47.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Wanblee (11 mi).
0
Long Valley, Monday, 19 October
Clear. High 62°, low 40°.
0Long Valley, Tuesday, 20 October
Clear. High 73°, low 47°.
0Long Valley, Wednesday, 21 October
Clear. High 66°, low 50°.
0
Long Valley, Thursday, 22 October
Overcast. High 75°, low 52°.
0.16
Long Valley, Friday, 23 October
Rain. High 79°, low 61°.
0.15Long Valley, Saturday, 24 October
Light rain. High 51°, low 39°.
0Long Valley, Sunday, 25 October
Clear. High 56°, low 36°.
0Long Valley, Monday, 26 October
Clear. High 65°, low 44°.
0
Long Valley, Tuesday, 27 October
Partly cloudy. High 71°, low 47°.
0Long Valley, Wednesday, 28 October
Overcast. High 73°, low 53°.
0Long Valley, Thursday, 29 October
Partly cloudy. High 60°, low 49°.
0Long Valley, Friday, 30 October
Clear. High 70°, low 46°.
0Long Valley, Saturday, 31 October
Overcast. High 62°, low 44°.
0Long Valley, Sunday, 1 November
Clear. High 70°, low 42°.
0Long Valley, Monday, 2 November
Clear. High 60°, low 49°.
0.04Long Valley, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.02
Long Valley, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.04Long Valley, Thursday, 5 November
Climate normal for this date — 60-year average.
0.04Long Valley, Friday, 6 November
Climate normal for this date — 60-year average.
0.04Long Valley, Saturday, 7 November
Climate normal for this date — 60-year average.
0.07Long Valley, Sunday, 8 November
Climate normal for this date — 60-year average.
0.06Long Valley, Monday, 9 November
Climate normal for this date — 60-year average.
0.04Long Valley, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.03Long Valley, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.04Long Valley, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Long Valley, Friday, 13 November
Climate normal for this date — 60-year average.
0.02Long Valley, Saturday, 14 November
Climate normal for this date — 60-year average.
0.02Long Valley, Sunday, 15 November
Climate normal for this date — 60-year average.
0.02Long Valley, Monday, 16 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 Long Valley, SD 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 Long Valley, SD 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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