Weather in Lewistown Heights, MT
Lewistown Heights, Sunday, 9 August, 12:09
Mostly clear. Feels like 73°. High 82°, low 53°.
Monthly outlook for Lewistown Heights, MT: average high 86.9°, average low 61°. That is 4.4° above the climate normal for August. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 24 August (98.6°), the coolest 10 August (49.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 82.4° | 79.3° | +1.7° |
| 19 August – 28 August | 94.3° | 77.9° | +9.1° |
| 29 August – 7 September | at normal | 75.1° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Lewistown (2 mi).
0
Lewistown Heights, Monday, 10 August
Clear. High 85°, low 50°.
0Lewistown Heights, Tuesday, 11 August
Clear. High 85°, low 61°.
0.11
Lewistown Heights, Wednesday, 12 August
Light rain. High 86°, low 59°.
0.44Lewistown Heights, Thursday, 13 August
Rain. High 69°, low 55°.
0
Lewistown Heights, Friday, 14 August
Overcast. High 69°, low 55°.
0.04Lewistown Heights, Saturday, 15 August
Light rain. High 84°, low 55°.
0.02Lewistown Heights, Sunday, 16 August
Light rain. High 92°, low 61°.
0Lewistown Heights, Monday, 17 August
Overcast. High 87°, low 68°.
0
Lewistown Heights, Tuesday, 18 August
Partly cloudy. High 86°, low 63°.
0Lewistown Heights, Wednesday, 19 August
Clear. High 90°, low 64°.
0Lewistown Heights, Thursday, 20 August
Clear. High 96°, low 66°.
0Lewistown Heights, Friday, 21 August
Partly cloudy. High 90°, low 65°.
0Lewistown Heights, Saturday, 22 August
Clear. High 94°, low 61°.
0Lewistown Heights, Sunday, 23 August
Clear. High 97°, low 70°.
0Lewistown Heights, Monday, 24 August
Clear. High 99°, low 70°.
0.05Lewistown Heights, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.03Lewistown Heights, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.04Lewistown Heights, Thursday, 27 August
Climate normal for this date — 60-year average.
0.05Lewistown Heights, Friday, 28 August
Climate normal for this date — 60-year average.
0.04Lewistown Heights, Saturday, 29 August
Climate normal for this date — 60-year average.
0.06Lewistown Heights, Sunday, 30 August
Climate normal for this date — 60-year average.
0.06Lewistown Heights, Monday, 31 August
Climate normal for this date — 60-year average.
0.06Lewistown Heights, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.03Lewistown Heights, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.02Lewistown Heights, Thursday, 3 September
Climate normal for this date — 60-year average.
0.03Lewistown Heights, Friday, 4 September
Climate normal for this date — 60-year average.
0.05Lewistown Heights, Saturday, 5 September
Climate normal for this date — 60-year average.
0.06Lewistown Heights, Sunday, 6 September
Climate normal for this date — 60-year average.
0.06Lewistown Heights, 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 Lewistown Heights, 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 Lewistown Heights, 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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