Weather in Shamrock Colony, SD
Shamrock Colony, Sunday, 9 August, 10:07
Mostly clear. Feels like 72°. High 84°, low 65°.
Monthly outlook for Shamrock Colony, SD: average high 87.6°, average low 63.4°. That is 3.7° above the climate normal for August. Precipitation is expected on 6 days (about 2.0 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 24 August (98°), the coolest 19 August (59.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 85.7° | 80.9° | +2.7° |
| 19 August – 28 August | 90.7° | 80.7° | +5.6° |
| 29 August – 7 September | at normal | 78.7° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Bancroft (14 mi).
0.07
Shamrock Colony, Monday, 10 August
Light rain. High 89°, low 60°.
1.07Shamrock Colony, Tuesday, 11 August
Heavy rain. High 91°, low 65°.
0.03Shamrock Colony, Wednesday, 12 August
Light rain. High 92°, low 66°.
0.09Shamrock Colony, Thursday, 13 August
Light rain. High 83°, low 64°.
0.31Shamrock Colony, Friday, 14 August
Rain. High 80°, low 62°.
0.16Shamrock Colony, Saturday, 15 August
Light rain. High 76°, low 63°.
0
Shamrock Colony, Sunday, 16 August
Overcast. High 84°, low 61°.
0.03Shamrock Colony, Monday, 17 August
Light rain. High 85°, low 64°.
0.16Shamrock Colony, Tuesday, 18 August
Rain. High 93°, low 64°.
0
Shamrock Colony, Wednesday, 19 August
Clear. High 81°, low 60°.
0
Shamrock Colony, Thursday, 20 August
Partly cloudy. High 91°, low 62°.
0Shamrock Colony, Friday, 21 August
Overcast. High 94°, low 66°.
0Shamrock Colony, Saturday, 22 August
Partly cloudy. High 87°, low 62°.
0Shamrock Colony, Sunday, 23 August
Clear. High 93°, low 61°.
0Shamrock Colony, Monday, 24 August
Clear. High 98°, low 68°.
0.08Shamrock Colony, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.1Shamrock Colony, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.06Shamrock Colony, Thursday, 27 August
Climate normal for this date — 60-year average.
0.1Shamrock Colony, Friday, 28 August
Climate normal for this date — 60-year average.
0.06Shamrock Colony, Saturday, 29 August
Climate normal for this date — 60-year average.
0.08Shamrock Colony, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Shamrock Colony, Monday, 31 August
Climate normal for this date — 60-year average.
0.08Shamrock Colony, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.09Shamrock Colony, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.06Shamrock Colony, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Shamrock Colony, Friday, 4 September
Climate normal for this date — 60-year average.
0.08Shamrock Colony, Saturday, 5 September
Climate normal for this date — 60-year average.
0.06Shamrock Colony, Sunday, 6 September
Climate normal for this date — 60-year average.
0.1Shamrock Colony, 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 Shamrock Colony, 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 Shamrock Colony, 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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