10-day forecast for Lanark, MT: 30° to 73°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
71°
Best day: Thursday, October 22
48° · 0.27 in
Worst day: Saturday, October 24
Tap any day below to see morning, afternoon, evening and overnight.
Thu, 2271° / 40°0
Morning44°feels 40°
Afternoon71°feels 70°
Evening54°feels 53°
Overnight47°feels 43°
71 °
Lanark, Thursday, 22 October
Clear. High 71°, low 40°.
Pressure29.91 inHg
Wind4.1 mph SE
Humidity59%
Visibility6.2 mi
Dew point48°
Fri, 2373° / 42°0.3
Morning46°feels 41°
Afternoon71°feels 71°
Evening58°feels 58°
Overnight45°feels 42°
73 °
Lanark, Friday, 23 October
Rain. High 73°, low 42°.
Pressure29.62 inHg
Wind13.1 mph SE
Humidity68%
Visibility6.2 mi
Dew point53°
Sat, 2448° / 36°0.27
Morning36°feels 27°
Afternoon47°feels 41°
Evening39°feels 35°
Overnight39°feels 30°
48 °
Lanark, Saturday, 24 October
Rain. High 48°, low 36°.
Pressure30.39 inHg
Wind12.8 mph W
Humidity60%
Visibility6.2 mi
Dew point26°
Sun, 2547° / 32°0
Morning33°feels 27°
Afternoon46°feels 41°
Evening36°feels 32°
Overnight33°feels 28°
47 °
Lanark, Sunday, 25 October
Clear. High 47°, low 32°.
Pressure30.56 inHg
Wind8.2 mph E
Humidity58%
Visibility6.2 mi
Dew point22°
Mon, 2638° / 31°0.04
Morning37°feels 31°
Afternoon37°feels 31°
Evening36°feels 30°
Overnight36°feels 30°
38 °
Lanark, Monday, 26 October
Light rain. High 38°, low 31°.
Pressure30.62 inHg
Wind8 mph SE
Humidity87%
Visibility—
Dew point34°
Tue, 2741° / 32°0.04
Morning34°feels 30°
Afternoon41°feels 38°
Evening40°feels 36°
Overnight35°feels 30°
41 °
Lanark, Tuesday, 27 October
Light snow. High 41°, low 32°.
Pressure30.45 inHg
Wind7.8 mph NW
Humidity74%
Visibility—
Dew point32°
Wed, 2847° / 30°0
Morning33°feels 29°
Afternoon42°feels 37°
Evening41°feels 36°
Overnight37°feels 31°
47 °
Lanark, Wednesday, 28 October
Partly cloudy. High 47°, low 30°.
Pressure30.45 inHg
Wind11.9 mph S
Humidity62%
Visibility—
Dew point28°
Thu, 2953° / 35°0
Morning39°feels 34°
Afternoon49°feels 47°
Evening46°feels 44°
Overnight43°feels 40°
53 °
Lanark, Thursday, 29 October
Overcast. High 53°, low 35°.
Pressure29.80 inHg
Wind11 mph SE
Humidity34%
Visibility—
Dew point21°
Fri, 3059° / 45°0
Morning49°feels 45°
Afternoon56°feels 54°
Evening51°feels 49°
Overnight48°feels 46°
59 °
Lanark, Friday, 30 October
Clear. High 59°, low 45°.
Pressure29.53 inHg
Wind18.3 mph W
Humidity40%
Visibility—
Dew point32°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Lanark, MT around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.