Weather in Fort Randall, SD
Fort Randall, Sunday, 9 August, 00:31
Clear. Feels like 73°. High 97°, low 65°.
Monthly outlook for Fort Randall, SD: average high 88.4°, average low 63.4°. That is 2.2° above the climate normal for August. Precipitation is expected on 9 days (about 1.5 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 10 August (103.7°), the coolest 21 August (56.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 90.6° | 84.3° | +3.5° |
| 19 August – 28 August | 84.7° | 84.4° | +0.2° |
| 29 August – 7 September | at normal | 82.3° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Marty (10 mi).
0
Fort Randall, Monday, 10 August
Partly cloudy. High 104°, low 67°.
0Fort Randall, Tuesday, 11 August
Partly cloudy. High 99°, low 67°.
0.11
Fort Randall, Wednesday, 12 August
Light rain. High 94°, low 68°.
0.39Fort Randall, Thursday, 13 August
Rain. High 77°, low 64°.
0.07Fort Randall, Friday, 14 August
Light rain. High 79°, low 59°.
0
Fort Randall, Saturday, 15 August
Overcast. High 79°, low 64°.
0.07Fort Randall, Sunday, 16 August
Light rain. High 83°, low 64°.
0.06Fort Randall, Monday, 17 August
Light rain. High 96°, low 67°.
0.02Fort Randall, Tuesday, 18 August
Light rain. High 99°, low 67°.
0.28Fort Randall, Wednesday, 19 August
Rain. High 82°, low 61°.
0.31Fort Randall, Thursday, 20 August
Rain. High 65°, low 58°.
0.15Fort Randall, Friday, 21 August
Rain. High 80°, low 56°.
0
Fort Randall, Saturday, 22 August
Clear. High 92°, low 63°.
0.04Fort Randall, Sunday, 23 August
Light rain. High 89°, low 63°.
0Fort Randall, Monday, 24 August
Clear. High 100°, low 64°.
0.11Fort Randall, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.07Fort Randall, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.07Fort Randall, Thursday, 27 August
Climate normal for this date — 60-year average.
0.06Fort Randall, Friday, 28 August
Climate normal for this date — 60-year average.
0.04Fort Randall, Saturday, 29 August
Climate normal for this date — 60-year average.
0.08Fort Randall, Sunday, 30 August
Climate normal for this date — 60-year average.
0.09Fort Randall, Monday, 31 August
Climate normal for this date — 60-year average.
0.08Fort Randall, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.06Fort Randall, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.06Fort Randall, Thursday, 3 September
Climate normal for this date — 60-year average.
0.11Fort Randall, Friday, 4 September
Climate normal for this date — 60-year average.
0.06Fort Randall, Saturday, 5 September
Climate normal for this date — 60-year average.
0.03
Fort Randall, Sunday, 6 September
Climate normal for this date — 60-year average.
0.06Fort Randall, 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 Fort Randall, 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 Fort Randall, 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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