10-day forecast for Alta, MT: 27° to 66°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.
66°
Best day: Wednesday, October 21
47° · 0.58 in
Worst day: Friday, October 23
Tap any day below to see morning, afternoon, evening and overnight.
Tue, 2064° / 32°0
Morning32°feels 32°
Afternoon62°feels 59°
Evening47°feels 47°
Overnight37°feels 37°
64 °
Alta, Tuesday, 20 October
Overcast. High 64°, low 32°.
Pressure30.03 inHg
Wind1.7 mph E
Humidity37%
Visibility6.2 mi
Dew point32°
Wed, 2166° / 32°0
Morning37°feels 37°
Afternoon65°feels 63°
Evening48°feels 48°
Overnight36°feels 36°
66 °
Alta, Wednesday, 21 October
Overcast. High 66°, low 32°.
Pressure30.00 inHg
Wind4.1 mph SE
Humidity45%
Visibility6.2 mi
Dew point37°
Thu, 2264° / 40°0.06
Morning40°feels 40°
Afternoon64°feels 62°
Evening50°feels 50°
Overnight42°feels 42°
64 °
Alta, Thursday, 22 October
Light rain. High 64°, low 40°.
Pressure29.83 inHg
Wind5.1 mph SE
Humidity54%
Visibility6.2 mi
Dew point42°
Fri, 2347° / 35°0.58
Morning39°feels 35°
Afternoon38°feels 32°
Evening37°feels 31°
Overnight47°feels 47°
47 °
Alta, Friday, 23 October
Snow. High 47°, low 35°.
Pressure30.00 inHg
Wind6.9 mph W
Humidity96%
Visibility2.0 mi
Dew point34°
Sat, 2450° / 27°0
Morning31°feels 31°
Afternoon43°feels 41°
Evening42°feels 42°
Overnight31°feels 31°
50 °
Alta, Saturday, 24 October
Clear. High 50°, low 27°.
Pressure30.15 inHg
Wind4.9 mph S
Humidity68%
Visibility—
Dew point31°
Sun, 2561° / 31°0
Morning38°feels 37°
Afternoon54°feels 50°
Evening50°feels 47°
Overnight40°feels 40°
61 °
Alta, Sunday, 25 October
Mostly clear. High 61°, low 31°.
Pressure30.21 inHg
Wind4.7 mph SW
Humidity28%
Visibility—
Dew point19°
Mon, 2662° / 37°0
Morning43°feels 40°
Afternoon57°feels 53°
Evening52°feels 49°
Overnight44°feels 44°
62 °
Alta, Monday, 26 October
Overcast. High 62°, low 37°.
Pressure30.15 inHg
Wind4.3 mph S
Humidity22%
Visibility—
Dew point17°
Tue, 2760° / 35°0
Morning41°feels 37°
Afternoon52°feels 49°
Evening49°feels 47°
Overnight40°feels 39°
60 °
Alta, Tuesday, 27 October
Overcast. High 60°, low 35°.
Pressure30.24 inHg
Wind4.7 mph NE
Humidity35%
Visibility—
Dew point24°
Wed, 2864° / 36°0
Morning42°feels 41°
Afternoon56°feels 53°
Evening53°feels 50°
Overnight44°feels 44°
64 °
Alta, Wednesday, 28 October
Partly cloudy. High 64°, low 36°.
Pressure30.09 inHg
Wind4.1 mph SE
Humidity29%
Visibility—
Dew point22°
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 Alta, 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.