Weather in Porcupine, SD
Porcupine, Sunday, 9 August, 09:29
Mostly clear. Feels like 75°. High 96°, low 66°.
Monthly outlook for Porcupine, SD: average high 93°, average low 67.4°. That is 4.9° above the climate normal for August. Precipitation is expected on 6 days (about 1.5 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 10 August (101.1°), the coolest 14 August (63.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 90.9° | 84.1° | +3.8° |
| 19 August – 28 August | 96.5° | 84.1° | +6.9° |
| 29 August – 7 September | at normal | 81.8° | — |
August records over 66 years
0Porcupine, Monday, 10 August
Mostly clear. High 101°, low 65°.
0
Porcupine, Tuesday, 11 August
Partly cloudy. High 101°, low 64°.
0.17
Porcupine, Wednesday, 12 August
Light rain. High 100°, low 68°.
0.05Porcupine, Thursday, 13 August
Light rain. High 77°, low 64°.
0.83Porcupine, Friday, 14 August
Heavy rain. High 79°, low 63°.
0.14Porcupine, Saturday, 15 August
Light rain. High 82°, low 67°.
0.26Porcupine, Sunday, 16 August
Rain. High 86°, low 65°.
0.07Porcupine, Monday, 17 August
Light rain. High 97°, low 64°.
0Porcupine, Tuesday, 18 August
Mostly clear. High 91°, low 72°.
0
Porcupine, Wednesday, 19 August
Clear. High 93°, low 67°.
0Porcupine, Thursday, 20 August
Clear. High 99°, low 68°.
0
Porcupine, Friday, 21 August
Overcast. High 97°, low 72°.
0Porcupine, Saturday, 22 August
Partly cloudy. High 89°, low 67°.
0Porcupine, Sunday, 23 August
Overcast. High 100°, low 70°.
0Porcupine, Monday, 24 August
Clear. High 100°, low 74°.
0.04Porcupine, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.09Porcupine, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.06Porcupine, Thursday, 27 August
Climate normal for this date — 60-year average.
0.04Porcupine, Friday, 28 August
Climate normal for this date — 60-year average.
0.05Porcupine, Saturday, 29 August
Climate normal for this date — 60-year average.
0.05Porcupine, Sunday, 30 August
Climate normal for this date — 60-year average.
0.05Porcupine, Monday, 31 August
Climate normal for this date — 60-year average.
0.05Porcupine, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.05Porcupine, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.03Porcupine, Thursday, 3 September
Climate normal for this date — 60-year average.
0.06Porcupine, Friday, 4 September
Climate normal for this date — 60-year average.
0.06Porcupine, Saturday, 5 September
Climate normal for this date — 60-year average.
0.03Porcupine, Sunday, 6 September
Climate normal for this date — 60-year average.
0.03Porcupine, 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 Porcupine, 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 Porcupine, 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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