Weather in Lake Madison, SD
Lake Madison, Sunday, 9 August, 04:07
Overcast. Feels like 66°. High 84°, low 65°.
Monthly outlook for Lake Madison, SD: average high 85.6°, average low 63.8°. That is 3.9° above the climate normal for August. Precipitation is expected on 9 days (about 1.6 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 19 August (100°), the coolest 14 August (56.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 83.9° | 78.6° | +3° |
| 19 August – 28 August | 88.4° | 78.5° | +5.5° |
| 29 August – 7 September | at normal | 76.7° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Nunda (14 mi).
0.43
Lake Madison, Monday, 10 August
Rain. High 84°, low 61°.
0.03Lake Madison, Tuesday, 11 August
Light rain. High 92°, low 63°.
0
Lake Madison, Wednesday, 12 August
Partly cloudy. High 91°, low 62°.
0.15Lake Madison, Thursday, 13 August
Light rain. High 67°, low 59°.
0Lake Madison, Friday, 14 August
Overcast. High 73°, low 57°.
0.01Lake Madison, Saturday, 15 August
Light rain. High 76°, low 61°.
0Lake Madison, Sunday, 16 August
Overcast. High 89°, low 64°.
0.11Lake Madison, Monday, 17 August
Light rain. High 87°, low 62°.
0.04Lake Madison, Tuesday, 18 August
Light rain. High 97°, low 69°.
0.03Lake Madison, Wednesday, 19 August
Light rain. High 100°, low 72°.
0.11Lake Madison, Thursday, 20 August
Light rain. High 86°, low 67°.
0.05Lake Madison, Friday, 21 August
Light rain. High 85°, low 63°.
0.15Lake Madison, Saturday, 22 August
Rain. High 96°, low 66°.
0.28Lake Madison, Sunday, 23 August
Rain. High 86°, low 67°.
0.16Lake Madison, Monday, 24 August
Rain. High 77°, low 66°.
0.09
Lake Madison, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.13Lake Madison, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.06Lake Madison, Thursday, 27 August
Climate normal for this date — 60-year average.
0.08Lake Madison, Friday, 28 August
Climate normal for this date — 60-year average.
0.05Lake Madison, Saturday, 29 August
Climate normal for this date — 60-year average.
0.09Lake Madison, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Lake Madison, Monday, 31 August
Climate normal for this date — 60-year average.
0.09Lake Madison, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.09Lake Madison, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.04Lake Madison, Thursday, 3 September
Climate normal for this date — 60-year average.
0.07
Lake Madison, Friday, 4 September
Climate normal for this date — 60-year average.
0.08Lake Madison, Saturday, 5 September
Climate normal for this date — 60-year average.
0.06Lake Madison, Sunday, 6 September
Climate normal for this date — 60-year average.
0.1Lake Madison, Monday, 7 September
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 Lake Madison, 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 Lake Madison, 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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