Weather in Rocky Boy West, MT
Rocky Boy West, Sunday, 9 August, 10:03
Clear. Feels like 66°. High 83°, low 55°.
Monthly outlook for Rocky Boy West, MT: average high 86.9°, average low 64.3°. That is 2.5° above the climate normal for August. Precipitation is expected on 1 day (about 0.5 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 23 August (97.6°), the coolest 10 August (49.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 82.6° | 82.9° | -0.2° |
| 19 August – 28 August | 93.9° | 81° | +7.2° |
| 29 August – 7 September | at normal | 77.9° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Big Sandy (10 mi).
0Rocky Boy West, Monday, 10 August
Clear. High 84°, low 50°.
0Rocky Boy West, Tuesday, 11 August
Clear. High 85°, low 65°.
0
Rocky Boy West, Wednesday, 12 August
Partly cloudy. High 85°, low 63°.
0.54
Rocky Boy West, Thursday, 13 August
Rain. High 71°, low 60°.
0
Rocky Boy West, Friday, 14 August
Overcast. High 69°, low 58°.
0Rocky Boy West, Saturday, 15 August
Clear. High 82°, low 58°.
0Rocky Boy West, Sunday, 16 August
Clear. High 93°, low 65°.
0Rocky Boy West, Monday, 17 August
Overcast. High 93°, low 73°.
0Rocky Boy West, Tuesday, 18 August
Partly cloudy. High 81°, low 64°.
0Rocky Boy West, Wednesday, 19 August
Clear. High 94°, low 68°.
0Rocky Boy West, Thursday, 20 August
Clear. High 97°, low 69°.
0
Rocky Boy West, Friday, 21 August
Mostly clear. High 88°, low 68°.
0Rocky Boy West, Saturday, 22 August
Clear. High 94°, low 68°.
0Rocky Boy West, Sunday, 23 August
Clear. High 98°, low 73°.
0Rocky Boy West, Monday, 24 August
Clear. High 93°, low 71°.
0.03Rocky Boy West, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.02Rocky Boy West, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.02Rocky Boy West, Thursday, 27 August
Climate normal for this date — 60-year average.
0.04Rocky Boy West, Friday, 28 August
Climate normal for this date — 60-year average.
0.05Rocky Boy West, Saturday, 29 August
Climate normal for this date — 60-year average.
0.04Rocky Boy West, Sunday, 30 August
Climate normal for this date — 60-year average.
0.06Rocky Boy West, Monday, 31 August
Climate normal for this date — 60-year average.
0.04Rocky Boy West, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.02Rocky Boy West, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.02Rocky Boy West, Thursday, 3 September
Climate normal for this date — 60-year average.
0.04Rocky Boy West, Friday, 4 September
Climate normal for this date — 60-year average.
0.05Rocky Boy West, Saturday, 5 September
Climate normal for this date — 60-year average.
0.04Rocky Boy West, Sunday, 6 September
Climate normal for this date — 60-year average.
0.07Rocky Boy West, 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 Rocky Boy West, 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 Rocky Boy West, 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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