Weather in Waltham, MT
Waltham, Wednesday, 14 October, 16:49
Partly cloudy. Feels like 55°. High 58°, low 32°.
Monthly outlook for Waltham, MT: average high 61.9°, average low 42°. That is 3.1° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 17 October (73.3°), the coolest 14 October (31.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 14 October – 23 October | 61.2° | 57.7° | +1.9° |
| 24 October – 2 November | 63° | 52.2° | +6° |
| 3 November – 12 November | at normal | 46.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Carter (15 mi).
0
Waltham, Thursday, 15 October
Clear. High 46°, low 34°.
0Waltham, Friday, 16 October
Partly cloudy. High 72°, low 36°.
0
Waltham, Saturday, 17 October
Overcast. High 73°, low 49°.
0
Waltham, Sunday, 18 October
Mostly clear. High 63°, low 40°.
0Waltham, Monday, 19 October
Clear. High 66°, low 41°.
0Waltham, Tuesday, 20 October
Overcast. High 52°, low 43°.
0Waltham, Wednesday, 21 October
Clear. High 63°, low 39°.
0Waltham, Thursday, 22 October
Clear. High 67°, low 48°.
0.03
Waltham, Friday, 23 October
Snow. High 51°, low 38°.
0Waltham, Saturday, 24 October
Overcast. High 46°, low 36°.
0Waltham, Sunday, 25 October
Overcast. High 61°, low 36°.
0Waltham, Monday, 26 October
Partly cloudy. High 67°, low 50°.
0Waltham, Tuesday, 27 October
Overcast. High 68°, low 48°.
0Waltham, Wednesday, 28 October
Partly cloudy. High 67°, low 51°.
0Waltham, Thursday, 29 October
Overcast. High 69°, low 51°.
0.02Waltham, Friday, 30 October
Climate normal for this date — 60-year average.
0.03Waltham, Saturday, 31 October
Climate normal for this date — 60-year average.
0.02Waltham, Sunday, 1 November
Climate normal for this date — 60-year average.
0.02Waltham, Monday, 2 November
Climate normal for this date — 60-year average.
0.02Waltham, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.04Waltham, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.04Waltham, Thursday, 5 November
Climate normal for this date — 60-year average.
0.03Waltham, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Waltham, Saturday, 7 November
Climate normal for this date — 60-year average.
0.05Waltham, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04Waltham, Monday, 9 November
Climate normal for this date — 60-year average.
0.03Waltham, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.03Waltham, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.02Waltham, Thursday, 12 November
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 Waltham, 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 Waltham, 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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