Weather in Long Valley, SD
Long Valley, Sunday, 18 October, 13:15
Clear. Feels like 65°. High 67°, low 42°.
Monthly outlook for Long Valley, SD: average high 60.7°, average low 42.3°. That is 2.1° above the climate normal for October. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 23 October (79.4°), the coolest 31 October (21.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 66.7° | 59.1° | +4.3° |
| 28 October – 6 November | 50.5° | 52.8° | -1.2° |
| 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).
0Long Valley, Monday, 19 October
Clear. High 63°, low 35°.
0Long Valley, Tuesday, 20 October
Clear. High 73°, low 47°.
0
Long Valley, Wednesday, 21 October
Mostly clear. High 66°, low 49°.
0
Long Valley, Thursday, 22 October
Overcast. High 74°, low 52°.
0Long Valley, Friday, 23 October
Mostly clear. High 79°, low 62°.
0.06
Long Valley, Saturday, 24 October
Light rain. High 56°, low 44°.
0Long Valley, Sunday, 25 October
Clear. High 65°, low 41°.
0Long Valley, Monday, 26 October
Overcast. High 65°, low 48°.
0.19Long Valley, Tuesday, 27 October
Rain. High 58°, low 52°.
0Long Valley, Wednesday, 28 October
Clear. High 63°, low 51°.
0Long Valley, Thursday, 29 October
Overcast. High 63°, low 40°.
0.69
Long Valley, Friday, 30 October
Snow. High 48°, low 28°.
0.13Long Valley, Saturday, 31 October
Snow. High 33°, low 21°.
0Long Valley, Sunday, 1 November
Mostly clear. High 39°, low 22°.
0Long Valley, Monday, 2 November
Overcast. High 55°, low 42°.
0.04
Long Valley, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.02Long 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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