Weather in Iron Lightning, SD
Iron Lightning, Thursday, 22 October, 00:38
Clear. Feels like 50°. High 77°, low 50°.
Monthly outlook for Iron Lightning, SD: average high 56.5°, average low 41.7°. That is 2.2° above the climate normal for October. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 23 October (81.1°), the coolest 2 November (33°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 22 October – 31 October | 57.5° | 54.2° | +1.8° |
| 1 November – 10 November | 54.7° | 48.1° | +3.7° |
| 11 November – 20 November | at normal | 42.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Thunder Butte (9 mi).
0
Iron Lightning, Friday, 23 October
Overcast. High 81°, low 57°.
0
Iron Lightning, Saturday, 24 October
Clear. High 61°, low 40°.
0.09
Iron Lightning, Sunday, 25 October
Light rain. High 40°, low 38°.
0Iron Lightning, Monday, 26 October
Overcast. High 43°, low 39°.
0.12
Iron Lightning, Tuesday, 27 October
Snow. High 40°, low 35°.
0.01Iron Lightning, Wednesday, 28 October
Light snow. High 48°, low 37°.
0Iron Lightning, Thursday, 29 October
Overcast. High 60°, low 38°.
0
Iron Lightning, Friday, 30 October
Partly cloudy. High 68°, low 47°.
0Iron Lightning, Saturday, 31 October
Overcast. High 58°, low 46°.
0Iron Lightning, Sunday, 1 November
Partly cloudy. High 51°, low 37°.
0Iron Lightning, Monday, 2 November
Overcast. High 50°, low 33°.
0Iron Lightning, Tuesday, 3 November
Partly cloudy. High 55°, low 38°.
0Iron Lightning, Wednesday, 4 November
Overcast. High 63°, low 47°.
0.03Iron Lightning, Thursday, 5 November
Light rain. High 47°, low 34°.
0Iron Lightning, Friday, 6 November
Overcast. High 62°, low 51°.
0.04
Iron Lightning, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Iron Lightning, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04Iron Lightning, Monday, 9 November
Climate normal for this date — 60-year average.
0.06Iron Lightning, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.01Iron Lightning, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.02Iron Lightning, Thursday, 12 November
Climate normal for this date — 60-year average.
0.02Iron Lightning, Friday, 13 November
Climate normal for this date — 60-year average.
0.02Iron Lightning, Saturday, 14 November
Climate normal for this date — 60-year average.
0.02Iron Lightning, Sunday, 15 November
Climate normal for this date — 60-year average.
0.02Iron Lightning, Monday, 16 November
Climate normal for this date — 60-year average.
0.02Iron Lightning, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.03Iron Lightning, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.03Iron Lightning, Thursday, 19 November
Climate normal for this date — 60-year average.
0.02Iron Lightning, Friday, 20 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 Iron Lightning, 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 Iron Lightning, 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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