EN
English Español

As of 19:52 MDT

Weather in Lanark, MT

76°Current weather

Lanark, Saturday, 8 August, 19:52

Overcast. Feels like 75°. High 89°, low 53°.

Pressure29.83 inHg
Wind12.8 mph NE
Humidity39%
Visibility6.2 mi
Dew point49°
Sun, 0987° / 53°0Clear
87 °Clear

Lanark, Sunday, 9 August

Clear. High 87°, low 53°.

Pressure29.88 inHg
Wind11.2 mph E
Humidity28%
Visibility6.2 mi
Dew point45°
Mon, 1084° / 49°0Overcast
84 °Overcast

Lanark, Monday, 10 August

Overcast. High 84°, low 49°.

Pressure29.88 inHg
Wind13.4 mph NE
Humidity31%
Visibility6.2 mi
Dew point44°
Tue, 1188° / 58°0Partly cloudy
88 °Partly cloudy

Lanark, Tuesday, 11 August

Partly cloudy. High 88°, low 58°.

Pressure29.94 inHg
Wind7.9 mph E
Humidity28%
Visibility6.2 mi
Dew point44°
Wed, 1286° / 59°0Clear
86 °Clear

Lanark, Wednesday, 12 August

Clear. High 86°, low 59°.

Pressure29.91 inHg
Wind16.5 mph E
Humidity31%
Visibility6.2 mi
Dew point47°
Thu, 1386° / 60°0Overcast
86 °Overcast

Lanark, Thursday, 13 August

Overcast. High 86°, low 60°.

Pressure29.94 inHg
Wind19.4 mph E
Humidity31%
Visibility—
Dew point44°
Fri, 1478° / 66°0.23Light rain
78 °Light rain

Lanark, Friday, 14 August

Light rain. High 78°, low 66°.

Pressure29.97 inHg
Wind15.5 mph E
Humidity66%
Visibility—
Dew point60°
Sat, 1579° / 58°0Mostly clear
79 °Mostly clear

Lanark, Saturday, 15 August

Mostly clear. High 79°, low 58°.

Pressure30.15 inHg
Wind13 mph N
Humidity38%
Visibility—
Dew point45°
Sun, 1682° / 61°0Partly cloudy
82 °Partly cloudy

Lanark, Sunday, 16 August

Partly cloudy. High 82°, low 61°.

Pressure30.06 inHg
Wind14.9 mph SE
Humidity42%
Visibility—
Dew point52°
Mon, 1793° / 66°0Clear
93 °Clear

Lanark, Monday, 17 August

Clear. High 93°, low 66°.

Pressure29.80 inHg
Wind17.5 mph NW
Humidity17%
Visibility—
Dew point39°
Tue, 1874° / 61°0Overcast
74 °Overcast

Lanark, Tuesday, 18 August

Overcast. High 74°, low 61°.

Pressure30.06 inHg
Wind13 mph NE
Humidity40%
Visibility—
Dew point46°
Wed, 1974° / 57°0Overcast
74 °Overcast

Lanark, Wednesday, 19 August

Overcast. High 74°, low 57°.

Pressure30.12 inHg
Wind15.7 mph E
Humidity42%
Visibility—
Dew point46°
Thu, 2088° / 60°0.11Light rain
88 °Light rain

Lanark, Thursday, 20 August

Light rain. High 88°, low 60°.

Pressure29.83 inHg
Wind14.9 mph S
Humidity38%
Visibility—
Dew point51°
Fri, 2176° / 66°0.25Light rain
76 °Light rain

Lanark, Friday, 21 August

Light rain. High 76°, low 66°.

Pressure29.74 inHg
Wind16.2 mph W
Humidity75%
Visibility—
Dew point59°
Sat, 2277° / 61°0Light rain
77 °Light rain

Lanark, Saturday, 22 August

Light rain. High 77°, low 61°.

Pressure29.88 inHg
Wind17.6 mph NW
Humidity30%
Visibility—
Dew point38°
Sun, 2391° / 61°0Overcast
91 °Overcast

Lanark, Sunday, 23 August

Overcast. High 91°, low 61°.

Pressure29.80 inHg
Wind16.3 mph S
Humidity23%
Visibility—
Dew point38°

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 Lanark, 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 Lanark, 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.