Weather in Big Stone Colony, MT
Big Stone Colony, Sunday, 9 August, 05:33
Overcast. Feels like 61°. High 81°, low 58°.
Monthly outlook for Big Stone Colony, MT: average high 79.7°, average low 55.8°. That is 1.4° below the climate normal for August. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 17 August (88.5°), the coolest 24 August (44.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 81.7° | 82.9° | -0.7° |
| 19 August – 28 August | 76.3° | 80.9° | -2.5° |
| 29 August – 7 September | at normal | 78.2° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Ulm (15 mi).
0
Big Stone Colony, Monday, 10 August
Clear. High 85°, low 48°.
0Big Stone Colony, Tuesday, 11 August
Clear. High 85°, low 60°.
0Big Stone Colony, Wednesday, 12 August
Overcast. High 82°, low 57°.
0Big Stone Colony, Thursday, 13 August
Overcast. High 82°, low 57°.
0.01
Big Stone Colony, Friday, 14 August
Light rain. High 64°, low 55°.
0.07Big Stone Colony, Saturday, 15 August
Light rain. High 85°, low 52°.
0Big Stone Colony, Sunday, 16 August
Overcast. High 82°, low 61°.
0.01Big Stone Colony, Monday, 17 August
Light rain. High 88°, low 59°.
0Big Stone Colony, Tuesday, 18 August
Overcast. High 82°, low 58°.
0.04Big Stone Colony, Wednesday, 19 August
Light rain. High 77°, low 58°.
0.01Big Stone Colony, Thursday, 20 August
Light rain. High 85°, low 55°.
0.09Big Stone Colony, Friday, 21 August
Light rain. High 87°, low 62°.
0.56Big Stone Colony, Saturday, 22 August
Rain. High 68°, low 57°.
0Big Stone Colony, Sunday, 23 August
Clear. High 67°, low 52°.
0Big Stone Colony, Monday, 24 August
Overcast. High 73°, low 45°.
0.06
Big Stone Colony, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.02Big Stone Colony, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.03
Big Stone Colony, Thursday, 27 August
Climate normal for this date — 60-year average.
0.04Big Stone Colony, Friday, 28 August
Climate normal for this date — 60-year average.
0.04Big Stone Colony, Saturday, 29 August
Climate normal for this date — 60-year average.
0.04Big Stone Colony, Sunday, 30 August
Climate normal for this date — 60-year average.
0.09Big Stone Colony, Monday, 31 August
Climate normal for this date — 60-year average.
0.05Big Stone Colony, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.04Big Stone Colony, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.01Big Stone Colony, Thursday, 3 September
Climate normal for this date — 60-year average.
0.04Big Stone Colony, Friday, 4 September
Climate normal for this date — 60-year average.
0.07Big Stone Colony, Saturday, 5 September
Climate normal for this date — 60-year average.
0.04Big Stone Colony, Sunday, 6 September
Climate normal for this date — 60-year average.
0.05Big Stone 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 Big Stone Colony, MT 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 Big Stone Colony, MT 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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