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As of 14:29 MDT

Weather in Eureka, MT

82°Current weather

Eureka, Saturday, 8 August, 14:29

Overcast. Feels like 81°. High 85°, low 54°.

Pressure29.85 inHg
Wind4.5 mph SW
Humidity27%
Visibility6.2 mi
Dew point44°
Sun, 0987° / 52°0Mostly clear
87 °Mostly clear

Eureka, Sunday, 9 August

Mostly clear. High 87°, low 52°.

Pressure29.91 inHg
Wind1 mph NW
Humidity25%
Visibility6.2 mi
Dew point40°
Mon, 1090° / 53°0Clear
90 °Clear

Eureka, Monday, 10 August

Clear. High 90°, low 53°.

Pressure29.83 inHg
Wind2.2 mph W
Humidity18%
Visibility6.2 mi
Dew point36°
Tue, 1192° / 55°0Clear
92 °Clear

Eureka, Tuesday, 11 August

Clear. High 92°, low 55°.

Pressure29.97 inHg
Wind0.5 mph N
Humidity23%
Visibility6.2 mi
Dew point40°
Wed, 1292° / 56°0Mostly clear
92 °Mostly clear

Eureka, Wednesday, 12 August

Mostly clear. High 92°, low 56°.

Pressure29.85 inHg
Wind1 mph NW
Humidity29%
Visibility6.2 mi
Dew point45°
Thu, 1385° / 55°0.12Light rain
85 °Light rain

Eureka, Thursday, 13 August

Light rain. High 85°, low 55°.

Pressure29.91 inHg
Wind6.2 mph W
Humidity66%
Visibility—
Dew point55°
Fri, 1488° / 49°0Clear
88 °Clear

Eureka, Friday, 14 August

Clear. High 88°, low 49°.

Pressure29.94 inHg
Wind5.3 mph W
Humidity33%
Visibility—
Dew point43°
Sat, 1587° / 52°0Overcast
87 °Overcast

Eureka, Saturday, 15 August

Overcast. High 87°, low 52°.

Pressure29.97 inHg
Wind9.1 mph SW
Humidity37%
Visibility—
Dew point45°
Sun, 1686° / 58°0Clear
86 °Clear

Eureka, Sunday, 16 August

Clear. High 86°, low 58°.

Pressure30.00 inHg
Wind11 mph W
Humidity28%
Visibility—
Dew point43°
Mon, 1790° / 55°0Overcast
90 °Overcast

Eureka, Monday, 17 August

Overcast. High 90°, low 55°.

Pressure30.03 inHg
Wind10.3 mph W
Humidity24%
Visibility—
Dew point40°
Tue, 1888° / 64°0Overcast
88 °Overcast

Eureka, Tuesday, 18 August

Overcast. High 88°, low 64°.

Pressure29.97 inHg
Wind11 mph SW
Humidity19%
Visibility—
Dew point37°
Wed, 1990° / 54°0Overcast
90 °Overcast

Eureka, Wednesday, 19 August

Overcast. High 90°, low 54°.

Pressure30.03 inHg
Wind6 mph SE
Humidity34%
Visibility—
Dew point48°
Thu, 2091° / 64°0Overcast
91 °Overcast

Eureka, Thursday, 20 August

Overcast. High 91°, low 64°.

Pressure29.88 inHg
Wind9.8 mph W
Humidity21%
Visibility—
Dew point41°
Fri, 2192° / 62°0Clear
92 °Clear

Eureka, Friday, 21 August

Clear. High 92°, low 62°.

Pressure29.94 inHg
Wind7.5 mph SW
Humidity24%
Visibility—
Dew point44°
Sat, 2295° / 62°0Partly cloudy
95 °Partly cloudy

Eureka, Saturday, 22 August

Partly cloudy. High 95°, low 62°.

Pressure29.97 inHg
Wind2.7 mph NE
Humidity25%
Visibility—
Dew point44°
Sun, 2395° / 59°0Overcast
95 °Overcast

Eureka, Sunday, 23 August

Overcast. High 95°, low 59°.

Pressure30.00 inHg
Wind5.8 mph NW
Humidity37%
Visibility—
Dew point52°

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.