Weather in McNamara, MT
McNamara, Wednesday, 21 October, 04:21
Clear. Feels like 35°. High 64°, low 34°.
Monthly outlook for McNamara, MT: average high 48°, average low 29.6°. That is 0.5° below the climate normal for October. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 5 days and 1.0 inches. The warmest day looks like 22 October (64.7°), the coolest 28 October (19.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 49.3° | 50.6° | -0.7° |
| 31 October – 9 November | 45.7° | 44.8° | +0.5° |
| 10 November – 19 November | at normal | 40.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Potomac (5 mi).
0.05
McNamara, Thursday, 22 October
Light rain. High 65°, low 35°.
0.78McNamara, Friday, 23 October
Rain. High 48°, low 37°.
0
McNamara, Saturday, 24 October
Partly cloudy. High 45°, low 31°.
0
McNamara, Sunday, 25 October
Clear. High 51°, low 33°.
0.05
McNamara, Monday, 26 October
Snow. High 49°, low 30°.
0.02McNamara, Tuesday, 27 October
Light snow. High 35°, low 21°.
0
McNamara, Wednesday, 28 October
Overcast. High 41°, low 19°.
0McNamara, Thursday, 29 October
Overcast. High 45°, low 24°.
0McNamara, Friday, 30 October
Overcast. High 51°, low 28°.
0McNamara, Saturday, 31 October
Overcast. High 54°, low 31°.
0McNamara, Sunday, 1 November
Overcast. High 54°, low 37°.
0.14McNamara, Monday, 2 November
Light rain. High 48°, low 37°.
0.69McNamara, Tuesday, 3 November
Snow. High 42°, low 26°.
0McNamara, Wednesday, 4 November
Overcast. High 37°, low 28°.
0
McNamara, Thursday, 5 November
Mostly clear. High 40°, low 21°.
0.07
McNamara, Friday, 6 November
Climate normal for this date — 60-year average.
0.09McNamara, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06McNamara, Sunday, 8 November
Climate normal for this date — 60-year average.
0.06McNamara, Monday, 9 November
Climate normal for this date — 60-year average.
0.04McNamara, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06McNamara, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06McNamara, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07McNamara, Friday, 13 November
Climate normal for this date — 60-year average.
0.06McNamara, Saturday, 14 November
Climate normal for this date — 60-year average.
0.02McNamara, Sunday, 15 November
Climate normal for this date — 60-year average.
0.07McNamara, Monday, 16 November
Climate normal for this date — 60-year average.
0.06McNamara, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.07McNamara, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.06McNamara, 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 McNamara, 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 McNamara, 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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