10-day forecast for Alta, MT: 31° to 67°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.
67°
Best day: Wednesday, October 21
47° · 0.45 in
Worst day: Friday, October 23
Tap any day below to see morning, afternoon, evening and overnight.
Tue, 2065° / 31°0
Morning31°feels 31°
Afternoon62°feels 59°
Evening48°feels 48°
Overnight39°feels 39°
65 °
Alta, Tuesday, 20 October
Overcast. High 65°, low 31°.
Pressure30.03 inHg
Wind1.7 mph SE
Humidity37%
Visibility6.2 mi
Dew point33°
Wed, 2167° / 31°0
Morning31°feels 31°
Afternoon66°feels 64°
Evening49°feels 48°
Overnight37°feels 37°
67 °
Alta, Wednesday, 21 October
Overcast. High 67°, low 31°.
Pressure30.03 inHg
Wind3.9 mph S
Humidity45%
Visibility6.2 mi
Dew point37°
Thu, 2265° / 40°0.11
Morning40°feels 40°
Afternoon65°feels 63°
Evening51°feels 50°
Overnight42°feels 42°
65 °
Alta, Thursday, 22 October
Rain. High 65°, low 40°.
Pressure29.88 inHg
Wind4.9 mph SE
Humidity53%
Visibility6.2 mi
Dew point42°
Fri, 2347° / 37°0.45
Morning43°feels 40°
Afternoon39°feels 36°
Evening38°feels 34°
Overnight46°feels 46°
47 °
Alta, Friday, 23 October
Snow. High 47°, low 37°.
Pressure29.97 inHg
Wind4.2 mph W
Humidity99%
Visibility1.2 mi
Dew point36°
Sat, 2453° / 34°0.01
Morning38°feels 37°
Afternoon48°feels 46°
Evening47°feels 47°
Overnight36°feels 36°
53 °
Alta, Saturday, 24 October
Light rain. High 53°, low 34°.
Pressure30.21 inHg
Wind4.9 mph S
Humidity63%
Visibility—
Dew point34°
Sun, 2561° / 32°0
Morning38°feels 37°
Afternoon53°feels 50°
Evening51°feels 48°
Overnight41°feels 41°
61 °
Alta, Sunday, 25 October
Mostly clear. High 61°, low 32°.
Pressure30.18 inHg
Wind3.7 mph S
Humidity43%
Visibility—
Dew point29°
Mon, 2664° / 38°0
Morning44°feels 43°
Afternoon59°feels 56°
Evening53°feels 49°
Overnight42°feels 40°
64 °
Alta, Monday, 26 October
Partly cloudy. High 64°, low 38°.
Pressure30.15 inHg
Wind4.4 mph NE
Humidity22%
Visibility—
Dew point18°
Tue, 2760° / 33°0
Morning38°feels 35°
Afternoon52°feels 49°
Evening49°feels 46°
Overnight38°feels 38°
60 °
Alta, Tuesday, 27 October
Mostly clear. High 60°, low 33°.
Pressure30.24 inHg
Wind4.6 mph NE
Humidity34%
Visibility—
Dew point22°
Wed, 2864° / 35°0
Morning41°feels 40°
Afternoon56°feels 53°
Evening52°feels 49°
Overnight44°feels 44°
64 °
Alta, Wednesday, 28 October
Overcast. High 64°, low 35°.
Pressure30.09 inHg
Wind3.9 mph SE
Humidity31%
Visibility—
Dew point23°
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.