Weather in Eureka, MT
Eureka, Wednesday, 21 October, 06:05
Mostly clear. Feels like 36°. High 63°, low 39°.
Monthly outlook for Eureka, MT: average high 47.3°, average low 31.9°. That is 0.4° above the climate normal for October. Precipitation is expected on 5 days (about 0.8 inches), against a normal of 6 days and 1.3 inches. The warmest day looks like 22 October (64.2°), the coolest 28 October (20.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 49.7° | 48.4° | +0.8° |
| 31 October – 9 November | 43.2° | 42.7° | +0.2° |
| 10 November – 19 November | at normal | 38.7° | — |
October records over 66 years
0.04
Eureka, Thursday, 22 October
Light rain. High 64°, low 42°.
0.07Eureka, Friday, 23 October
Light rain. High 54°, low 46°.
0
Eureka, Saturday, 24 October
Mostly clear. High 57°, low 43°.
0
Eureka, Sunday, 25 October
Partly cloudy. High 51°, low 38°.
0.06
Eureka, Monday, 26 October
Snow. High 48°, low 34°.
0.01Eureka, Tuesday, 27 October
Light snow. High 36°, low 21°.
0
Eureka, Wednesday, 28 October
Overcast. High 39°, low 20°.
0Eureka, Thursday, 29 October
Overcast. High 41°, low 26°.
0Eureka, Friday, 30 October
Overcast. High 44°, low 24°.
0Eureka, Saturday, 31 October
Overcast. High 45°, low 32°.
0Eureka, Sunday, 1 November
Overcast. High 47°, low 39°.
0.42Eureka, Monday, 2 November
Snow. High 51°, low 39°.
0.19Eureka, Tuesday, 3 November
Snow. High 41°, low 25°.
0Eureka, Wednesday, 4 November
Overcast. High 37°, low 23°.
0Eureka, Thursday, 5 November
Partly cloudy. High 38°, low 20°.
0.1
Eureka, Friday, 6 November
Climate normal for this date — 60-year average.
0.09Eureka, Saturday, 7 November
Climate normal for this date — 60-year average.
0.07Eureka, Sunday, 8 November
Climate normal for this date — 60-year average.
0.08Eureka, Monday, 9 November
Climate normal for this date — 60-year average.
0.07Eureka, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Eureka, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.09Eureka, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Eureka, Friday, 13 November
Climate normal for this date — 60-year average.
0.1Eureka, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Eureka, Sunday, 15 November
Climate normal for this date — 60-year average.
0.1Eureka, Monday, 16 November
Climate normal for this date — 60-year average.
0.11Eureka, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.1Eureka, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Eureka, 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 Eureka, 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 Eureka, 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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