Weather in Eureka, MT
Eureka, Thursday, 15 October, 21:54
Clear. Feels like 48°. High 60°, low 35°.
Monthly outlook for Eureka, MT: average high 53.1°, average low 37.4°. That is 1.5° above the climate normal for October. Precipitation is expected on 4 days (about 0.4 inches), against a normal of 5 days and 1.0 inches. The warmest day looks like 17 October (64.9°), the coolest 29 October (30.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 October – 24 October | 56.9° | 52.5° | +2.4° |
| 25 October – 3 November | 46.7° | 45.6° | +0.6° |
| 4 November – 13 November | at normal | 41° | — |
October records over 66 years
0
Eureka, Friday, 16 October
Partly cloudy. High 63°, low 41°.
0
Eureka, Saturday, 17 October
Overcast. High 65°, low 44°.
0Eureka, Sunday, 18 October
Partly cloudy. High 58°, low 40°.
0.08
Eureka, Monday, 19 October
Light rain. High 54°, low 41°.
0Eureka, Tuesday, 20 October
Light rain. High 57°, low 45°.
0
Eureka, Wednesday, 21 October
Clear. High 61°, low 41°.
0Eureka, Thursday, 22 October
Overcast. High 62°, low 41°.
0.17
Eureka, Friday, 23 October
Snow. High 46°, low 40°.
0Eureka, Saturday, 24 October
Overcast. High 43°, low 34°.
0Eureka, Sunday, 25 October
Overcast. High 52°, low 32°.
0.09Eureka, Monday, 26 October
Light snow. High 44°, low 35°.
0Eureka, Tuesday, 27 October
Overcast. High 47°, low 31°.
0.03Eureka, Wednesday, 28 October
Light rain. High 43°, low 35°.
0Eureka, Thursday, 29 October
Overcast. High 50°, low 30°.
0.06Eureka, Friday, 30 October
Snow. High 45°, low 35°.
0.1
Eureka, Saturday, 31 October
Climate normal for this date — 60-year average.
0.09Eureka, Sunday, 1 November
Climate normal for this date — 60-year average.
0.1Eureka, Monday, 2 November
Climate normal for this date — 60-year average.
0.06Eureka, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.11Eureka, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.07Eureka, Thursday, 5 November
Climate normal for this date — 60-year average.
0.1Eureka, 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.
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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