Weather in Blacktail, SD
Blacktail, Friday, 9 October, 17:10
Clear. Feels like 80°. High 82°, low 45°.
Monthly outlook for Blacktail, SD: average high 58.8°, average low 41.1°. That is 1.5° above the climate normal for October. Precipitation is expected on 5 days (about 1.3 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 9 October (81.6°), the coolest 17 October (26.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 October – 18 October | 56.9° | 56.5° | +0.2° |
| 19 October – 28 October | 62° | 54.5° | +4.2° |
| 29 October – 7 November | at normal | 48.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Mountain Plains (8 mi).
0
Blacktail, Saturday, 10 October
Light rain. High 79°, low 54°.
0Blacktail, Sunday, 11 October
Light rain. High 54°, low 42°.
0.06Blacktail, Monday, 12 October
Light rain. High 57°, low 40°.
0.43Blacktail, Tuesday, 13 October
Rain. High 42°, low 36°.
0.05Blacktail, Wednesday, 14 October
Light rain. High 55°, low 41°.
0.73Blacktail, Thursday, 15 October
Rain. High 46°, low 36°.
0Blacktail, Friday, 16 October
Clear. High 37°, low 26°.
0
Blacktail, Saturday, 17 October
Overcast. High 55°, low 26°.
0Blacktail, Sunday, 18 October
Overcast. High 61°, low 43°.
0Blacktail, Monday, 19 October
Clear. High 68°, low 46°.
0Blacktail, Tuesday, 20 October
Clear. High 72°, low 52°.
0Blacktail, Wednesday, 21 October
Clear. High 57°, low 44°.
0Blacktail, Thursday, 22 October
Clear. High 69°, low 44°.
0Blacktail, Friday, 23 October
Clear. High 59°, low 43°.
0.06Blacktail, Saturday, 24 October
Light rain. High 48°, low 41°.
0.03
Blacktail, Sunday, 25 October
Climate normal for this date — 60-year average.
0.07
Blacktail, Monday, 26 October
Climate normal for this date — 60-year average.
0.05Blacktail, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.06Blacktail, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.11
Blacktail, Thursday, 29 October
Climate normal for this date — 60-year average.
0.04Blacktail, Friday, 30 October
Climate normal for this date — 60-year average.
0.05Blacktail, Saturday, 31 October
Climate normal for this date — 60-year average.
0.08Blacktail, Sunday, 1 November
Climate normal for this date — 60-year average.
0.05Blacktail, Monday, 2 November
Climate normal for this date — 60-year average.
0.04Blacktail, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.02Blacktail, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.04Blacktail, Thursday, 5 November
Climate normal for this date — 60-year average.
0.06Blacktail, Friday, 6 November
Climate normal for this date — 60-year average.
0.04Blacktail, Saturday, 7 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 Blacktail, 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 Blacktail, 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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