Weather in Tattnall, MT
Tattnall, Wednesday, 21 October, 09:44
Clear. Feels like 39°. High 65°, low 35°.
Monthly outlook for Tattnall, MT: average high 54.2°, average low 36.2°. That is 2.6° above the climate normal for October. Precipitation is expected on 3 days (about 0.7 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 22 October (69.1°), the coolest 26 October (30°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 54.3° | 51.5° | +1.6° |
| 31 October – 9 November | 54.2° | 44.9° | +5.2° |
| 10 November – 19 November | at normal | 39.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Valleytown (15 mi).
0
Tattnall, Thursday, 22 October
Partly cloudy. High 69°, low 38°.
0.52
Tattnall, Friday, 23 October
Rain. High 61°, low 37°.
0.05Tattnall, Saturday, 24 October
Light rain. High 43°, low 33°.
0
Tattnall, Sunday, 25 October
Overcast. High 45°, low 30°.
0Tattnall, Monday, 26 October
Overcast. High 43°, low 30°.
0Tattnall, Tuesday, 27 October
Overcast. High 51°, low 36°.
0Tattnall, Wednesday, 28 October
Clear. High 51°, low 33°.
0Tattnall, Thursday, 29 October
Clear. High 55°, low 38°.
0Tattnall, Friday, 30 October
Clear. High 59°, low 39°.
0Tattnall, Saturday, 31 October
Overcast. High 46°, low 37°.
0Tattnall, Sunday, 1 November
Clear. High 51°, low 33°.
0Tattnall, Monday, 2 November
Clear. High 57°, low 40°.
0Tattnall, Tuesday, 3 November
Partly cloudy. High 58°, low 38°.
0Tattnall, Wednesday, 4 November
Overcast. High 56°, low 40°.
0.09Tattnall, Thursday, 5 November
Light rain. High 57°, low 41°.
0.02
Tattnall, Friday, 6 November
Climate normal for this date — 60-year average.
0.01Tattnall, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Tattnall, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04Tattnall, Monday, 9 November
Climate normal for this date — 60-year average.
0.02Tattnall, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.02Tattnall, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.03Tattnall, Thursday, 12 November
Climate normal for this date — 60-year average.
0.02Tattnall, Friday, 13 November
Climate normal for this date — 60-year average.
0.02Tattnall, Saturday, 14 November
Climate normal for this date — 60-year average.
0.01Tattnall, Sunday, 15 November
Climate normal for this date — 60-year average.
0.02Tattnall, Monday, 16 November
Climate normal for this date — 60-year average.
0.02Tattnall, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.02Tattnall, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.02Tattnall, Thursday, 19 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 Tattnall, 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 Tattnall, 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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