Weather in Boulder Canyon, SD
Boulder Canyon, Sunday, 9 August, 03:05
Clear. Feels like 64°. High 85°, low 61°.
Monthly outlook for Boulder Canyon, SD: average high 81.1°, average low 60.5°. That is 0.3° below the climate normal for August. Precipitation is expected on 9 days (about 1.5 inches), against a normal of 5 days and 0.9 inches. The warmest day looks like 17 August (91.3°), the coolest 14 August (56.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 81.4° | 81.4° | -0° |
| 19 August – 28 August | 80.7° | 81.4° | -0.4° |
| 29 August – 7 September | at normal | 79.1° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Whitewood (5 mi).
0
Boulder Canyon, Monday, 10 August
Mostly clear. High 89°, low 59°.
0.06
Boulder Canyon, Tuesday, 11 August
Light rain. High 86°, low 59°.
0.17Boulder Canyon, Wednesday, 12 August
Light rain. High 88°, low 61°.
0.12Boulder Canyon, Thursday, 13 August
Light rain. High 61°, low 57°.
0.1Boulder Canyon, Friday, 14 August
Light rain. High 69°, low 56°.
0.12Boulder Canyon, Saturday, 15 August
Light rain. High 71°, low 59°.
0.02Boulder Canyon, Sunday, 16 August
Light rain. High 85°, low 58°.
0
Boulder Canyon, Monday, 17 August
Clear. High 91°, low 65°.
0
Boulder Canyon, Tuesday, 18 August
Overcast. High 89°, low 70°.
0.06Boulder Canyon, Wednesday, 19 August
Light rain. High 87°, low 65°.
0.08Boulder Canyon, Thursday, 20 August
Light rain. High 81°, low 58°.
0.03Boulder Canyon, Friday, 21 August
Light rain. High 84°, low 62°.
0.02Boulder Canyon, Saturday, 22 August
Light rain. High 79°, low 61°.
0.67Boulder Canyon, Sunday, 23 August
Heavy rain. High 79°, low 58°.
0.08Boulder Canyon, Monday, 24 August
Light rain. High 75°, low 57°.
0.03
Boulder Canyon, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.07
Boulder Canyon, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.06Boulder Canyon, Thursday, 27 August
Climate normal for this date — 60-year average.
0.02Boulder Canyon, Friday, 28 August
Climate normal for this date — 60-year average.
0.04Boulder Canyon, Saturday, 29 August
Climate normal for this date — 60-year average.
0.04Boulder Canyon, Sunday, 30 August
Climate normal for this date — 60-year average.
0.05Boulder Canyon, Monday, 31 August
Climate normal for this date — 60-year average.
0.05Boulder Canyon, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.05Boulder Canyon, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.03Boulder Canyon, Thursday, 3 September
Climate normal for this date — 60-year average.
0.08Boulder Canyon, Friday, 4 September
Climate normal for this date — 60-year average.
0.08Boulder Canyon, Saturday, 5 September
Climate normal for this date — 60-year average.
0.05Boulder Canyon, Sunday, 6 September
Climate normal for this date — 60-year average.
0.05Boulder Canyon, 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 Boulder Canyon, 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 Boulder Canyon, 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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