Weather in Dennis, SD
Dennis, Thursday, 15 October, 21:57
Clear. Feels like 32°. High 53°, low 40°.
Monthly outlook for Dennis, SD: average high 58.2°, average low 38.6°. That is 0.2° below the climate normal for October. Precipitation is expected on 3 days (about 2.0 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 21 October (74.3°), the coolest 28 October (25.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 October – 24 October | 63.6° | 60.2° | +1.9° |
| 25 October – 3 November | 49.2° | 54.4° | -2.9° |
| 4 November – 13 November | at normal | 49.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Dudley (4 mi).
0
Dennis, Friday, 16 October
Clear. High 53°, low 30°.
0
Dennis, Saturday, 17 October
Mostly clear. High 74°, low 39°.
0
Dennis, Sunday, 18 October
Partly cloudy. High 69°, low 41°.
0Dennis, Monday, 19 October
Clear. High 67°, low 40°.
0
Dennis, Tuesday, 20 October
Overcast. High 72°, low 46°.
0Dennis, Wednesday, 21 October
Clear. High 74°, low 47°.
0Dennis, Thursday, 22 October
Overcast. High 73°, low 56°.
1.22
Dennis, Friday, 23 October
Heavy rain. High 60°, low 38°.
0.02Dennis, Saturday, 24 October
Light rain. High 41°, low 37°.
0Dennis, Sunday, 25 October
Overcast. High 48°, low 33°.
0Dennis, Monday, 26 October
Clear. High 49°, low 33°.
0.56
Dennis, Tuesday, 27 October
Snow. High 37°, low 33°.
0Dennis, Wednesday, 28 October
Overcast. High 45°, low 25°.
0Dennis, Thursday, 29 October
Overcast. High 50°, low 39°.
0Dennis, Friday, 30 October
Overcast. High 65°, low 40°.
0.03Dennis, Saturday, 31 October
Climate normal for this date — 60-year average.
0.05Dennis, Sunday, 1 November
Climate normal for this date — 60-year average.
0.04Dennis, Monday, 2 November
Climate normal for this date — 60-year average.
0.04Dennis, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.01Dennis, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.02Dennis, Thursday, 5 November
Climate normal for this date — 60-year average.
0.03Dennis, Friday, 6 November
Climate normal for this date — 60-year average.
0.03Dennis, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Dennis, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04Dennis, Monday, 9 November
Climate normal for this date — 60-year average.
0.03Dennis, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.03Dennis, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.03Dennis, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Dennis, 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 Dennis, 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 Dennis, 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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