Weather in Arpan, SD
Arpan, Thursday, 15 October, 22:49
Clear. Feels like 33°. High 52°, low 41°.
Monthly outlook for Arpan, SD: average high 58.8°, average low 40.2°. That is 0.9° above the climate normal for October. Precipitation is expected on 3 days (about 1.3 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 22 October (81°), the coolest 28 October (30.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 October – 24 October | 64.2° | 58.5° | +3.2° |
| 25 October – 3 November | 49.7° | 53.1° | -1.9° |
| 4 November – 13 November | at normal | 47.8° | — |
October records over 66 years
0
Arpan, Friday, 16 October
Clear. High 56°, low 33°.
0
Arpan, Saturday, 17 October
Mostly clear. High 75°, low 41°.
0Arpan, Sunday, 18 October
Clear. High 66°, low 48°.
0Arpan, Monday, 19 October
Clear. High 63°, low 42°.
0
Arpan, Tuesday, 20 October
Partly cloudy. High 74°, low 45°.
0Arpan, Wednesday, 21 October
Clear. High 72°, low 52°.
0
Arpan, Thursday, 22 October
Overcast. High 81°, low 57°.
1.07
Arpan, Friday, 23 October
Rain. High 63°, low 38°.
0.17
Arpan, Saturday, 24 October
Snow. High 41°, low 36°.
0Arpan, Sunday, 25 October
Overcast. High 50°, low 34°.
0Arpan, Monday, 26 October
Clear. High 48°, low 34°.
0.05Arpan, Tuesday, 27 October
Light snow. High 38°, low 33°.
0Arpan, Wednesday, 28 October
Overcast. High 49°, low 31°.
0Arpan, Thursday, 29 October
Overcast. High 54°, low 40°.
0Arpan, Friday, 30 October
Partly cloudy. High 58°, low 38°.
0.04Arpan, Saturday, 31 October
Climate normal for this date — 60-year average.
0.06Arpan, Sunday, 1 November
Climate normal for this date — 60-year average.
0.02Arpan, Monday, 2 November
Climate normal for this date — 60-year average.
0.03Arpan, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.01Arpan, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.03Arpan, Thursday, 5 November
Climate normal for this date — 60-year average.
0.04Arpan, Friday, 6 November
Climate normal for this date — 60-year average.
0.03Arpan, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Arpan, Sunday, 8 November
Climate normal for this date — 60-year average.
0.06Arpan, Monday, 9 November
Climate normal for this date — 60-year average.
0.05Arpan, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.02Arpan, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.02Arpan, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Arpan, Friday, 13 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 Arpan, 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 Arpan, 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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