As of 16:36 MDT

Weather in Eureka, MT

59°Current weather

Eureka, Thursday, 15 October, 16:36

Partly cloudy. Feels like 57°. High 59°, low 35°.

Pressure30.53 inHg
Wind1.7 mph E
Humidity49%
Visibility6.2 mi
Dew point40°

Monthly outlook for Eureka, MT: average high 54.5°, average low 38.1°. That is 2.3° above the climate normal for October. Precipitation is expected on 4 days (about 1.0 inches), against a normal of 5 days and 1.0 inches. The warmest day looks like 17 October (64.9°), the coolest 25 October (31.7°).

54.5°/38.1°
Average high / low
+2.3°
Above normal
4 / 5
Wet days / normal
1.0 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
15 October – 24 October57.1°52.5°+2.6°
25 October – 3 November50.2°45.6°+2.5°
4 November – 13 Novemberat normal41°—

October records over 66 years

84.2°2 October 1992All-time high
0.3°30 October 1991All-time low
Fri, 1662° / 39°0Overcast
62 °Overcast

Eureka, Friday, 16 October

Overcast. High 62°, low 39°.

Pressure30.39 inHg
Wind4 mph SE
Humidity41%
Visibility6.2 mi
Dew point34°
Sat, 1765° / 44°0Overcast
65 °Overcast

Eureka, Saturday, 17 October

Overcast. High 65°, low 44°.

Pressure29.91 inHg
Wind10.4 mph SE
Humidity32%
Visibility6.2 mi
Dew point33°
Sun, 1858° / 41°0Mostly clear
58 °Mostly clear

Eureka, Sunday, 18 October

Mostly clear. High 58°, low 41°.

Pressure30.12 inHg
Wind2 mph E
Humidity52%
Visibility6.2 mi
Dew point36°
Mon, 1957° / 39°0Overcast
57 °Overcast

Eureka, Monday, 19 October

Overcast. High 57°, low 39°.

Pressure29.91 inHg
Wind2.1 mph NW
Humidity67%
Visibility—
Dew point38°
Tue, 2059° / 44°0Overcast
59 °Overcast

Eureka, Tuesday, 20 October

Overcast. High 59°, low 44°.

Pressure29.94 inHg
Wind3.6 mph E
Humidity50%
Visibility—
Dew point37°
Wed, 2159° / 42°0Overcast
59 °Overcast

Eureka, Wednesday, 21 October

Overcast. High 59°, low 42°.

Pressure29.94 inHg
Wind2.1 mph NE
Humidity58%
Visibility—
Dew point35°
Thu, 2256° / 43°0.01Light rain
56 °Light rain

Eureka, Thursday, 22 October

Light rain. High 56°, low 43°.

Pressure29.83 inHg
Wind5.3 mph S
Humidity61%
Visibility—
Dew point39°
Fri, 2351° / 41°0.04Light rain
51 °Light rain

Eureka, Friday, 23 October

Light rain. High 51°, low 41°.

Pressure30.00 inHg
Wind5.7 mph S
Humidity58%
Visibility—
Dew point36°
Sat, 2445° / 37°0.1Snow
45 °Snow

Eureka, Saturday, 24 October

Snow. High 45°, low 37°.

Pressure30.47 inHg
Wind3.3 mph S
Humidity73%
Visibility—
Dew point34°
Sun, 2550° / 32°0Partly cloudy
50 °Partly cloudy

Eureka, Sunday, 25 October

Partly cloudy. High 50°, low 32°.

Pressure30.45 inHg
Wind2.9 mph S
Humidity60%
Visibility—
Dew point30°
Mon, 2650° / 34°0Overcast
50 °Overcast

Eureka, Monday, 26 October

Overcast. High 50°, low 34°.

Pressure30.12 inHg
Wind8.3 mph S
Humidity51%
Visibility—
Dew point27°
Tue, 2747° / 36°0.19Light rain
47 °Light rain

Eureka, Tuesday, 27 October

Light rain. High 47°, low 36°.

Pressure29.97 inHg
Wind4.6 mph SE
Humidity74%
Visibility—
Dew point37°
Wed, 2851° / 37°0.65Rain
51 °Rain

Eureka, Wednesday, 28 October

Rain. High 51°, low 37°.

Pressure29.91 inHg
Wind7.2 mph SW
Humidity73%
Visibility—
Dew point41°
Thu, 2953° / 33°0Clear
53 °Clear

Eureka, Thursday, 29 October

Clear. High 53°, low 33°.

Pressure30.33 inHg
Wind4.9 mph S
Humidity53%
Visibility—
Dew point29°
Fri, 3051° / 33°0Mostly clear
51 °Mostly clear

Eureka, Friday, 30 October

Mostly clear. High 51°, low 33°.

Pressure30.39 inHg
Wind3.2 mph SE
Humidity61%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3144° / 32°0.1Climate normal
44 °Climate normal

Eureka, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high44°
Average low32°
Average precipitation0.1 in
Chance of precipitation38%
Record high63° (2008)
Record low2° (1984)
Sun, 0144° / 32°0.09Climate normal
44 °Climate normal

Eureka, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high44°
Average low32°
Average precipitation0.09 in
Chance of precipitation38%
Record high61° (2008)
Record low0° (1991)
Mon, 0244° / 31°0.1Climate normal
44 °Climate normal

Eureka, Monday, 2 November

Climate normal for this date — 60-year average.

Average high44°
Average low31°
Average precipitation0.1 in
Chance of precipitation37%
Record high60° (2020)
Record low-1° (1991)
Tue, 0344° / 32°0.06Climate normal
44 °Climate normal

Eureka, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high44°
Average low32°
Average precipitation0.06 in
Chance of precipitation32%
Record high60° (1981)
Record low11° (1991)
Wed, 0443° / 33°0.11Climate normal
43 °Climate normal

Eureka, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high43°
Average low33°
Average precipitation0.11 in
Chance of precipitation47%
Record high62° (1975)
Record low9° (2017)
Thu, 0543° / 31°0.07Climate normal
43 °Climate normal

Eureka, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high43°
Average low31°
Average precipitation0.07 in
Chance of precipitation43%
Record high62° (1975)
Record low8° (1967)
Fri, 0642° / 30°0.1Climate normal
42 °Climate normal

Eureka, Friday, 6 November

Climate normal for this date — 60-year average.

Average high42°
Average low30°
Average precipitation0.1 in
Chance of precipitation47%
Record high56° (2010)
Record low7° (1971)
Sat, 0741° / 29°0.09Climate normal
41 °Climate normal

Eureka, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high41°
Average low29°
Average precipitation0.09 in
Chance of precipitation48%
Record high55° (1999)
Record low6° (2017)
Sun, 0841° / 29°0.07Climate normal
41 °Climate normal

Eureka, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high41°
Average low29°
Average precipitation0.07 in
Chance of precipitation40%
Record high56° (2016)
Record low0° (2022)
Mon, 0941° / 29°0.08Climate normal
41 °Climate normal

Eureka, Monday, 9 November

Climate normal for this date — 60-year average.

Average high41°
Average low29°
Average precipitation0.08 in
Chance of precipitation42%
Record high59° (2016)
Record low1° (1986)
Tue, 1039° / 28°0.07Climate normal
39 °Climate normal

Eureka, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high39°
Average low28°
Average precipitation0.07 in
Chance of precipitation40%
Record high57° (2016)
Record low-4° (1986)
Wed, 1140° / 27°0.07Climate normal
40 °Climate normal

Eureka, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high40°
Average low27°
Average precipitation0.07 in
Chance of precipitation42%
Record high55° (2016)
Record low-7° (1985)
Thu, 1240° / 29°0.09Climate normal
40 °Climate normal

Eureka, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high40°
Average low29°
Average precipitation0.09 in
Chance of precipitation40%
Record high56° (2016)
Record low-5° (1986)
Fri, 1340° / 29°0.07Climate normal
40 °Climate normal

Eureka, Friday, 13 November

Climate normal for this date — 60-year average.

Average high40°
Average low29°
Average precipitation0.07 in
Chance of precipitation45%
Record high59° (2025)
Record low9° (2014)

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.