10-day forecast for Big Sag, MT: 32° to 67°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.
67°
Best day: Wednesday, November 11
43°
Worst day: Thursday, November 19
Tap any day below to see morning, afternoon, evening and overnight.
Wed, 1167° / 46°0
Morning47°feels 41°
Afternoon67°feels 65°
Evening55°feels 52°
Overnight47°feels 42°
67 °
Big Sag, Wednesday, 11 November
Mostly clear. High 67°, low 46°.
Pressure30.06 inHg
Wind14.5 mph SW
Humidity36%
Visibility6.2 mi
Dew point38°
Thu, 1265° / 50°0
Morning50°feels 49°
Afternoon65°feels 63°
Evening54°feels 51°
Overnight54°feels 51°
65 °
Big Sag, Thursday, 12 November
Overcast. High 65°, low 50°.
Pressure29.88 inHg
Wind2.4 mph NE
Humidity38%
Visibility6.2 mi
Dew point39°
Fri, 1366° / 46°0
Morning47°feels 44°
Afternoon66°feels 64°
Evening57°feels 54°
Overnight49°feels 49°
66 °
Big Sag, Friday, 13 November
Overcast. High 66°, low 46°.
Pressure29.56 inHg
Wind3.6 mph SW
Humidity32%
Visibility6.2 mi
Dew point31°
Sat, 1452° / 42°0.02
Morning51°feels 48°
Afternoon51°feels 49°
Evening48°feels 44°
Overnight52°feels 49°
52 °
Big Sag, Saturday, 14 November
Light rain. High 52°, low 42°.
Pressure29.62 inHg
Wind12.9 mph SW
Humidity62%
Visibility—
Dew point39°
Sun, 1559° / 40°0
Morning44°feels 40°
Afternoon53°feels 51°
Evening49°feels 46°
Overnight47°feels 41°
59 °
Big Sag, Sunday, 15 November
Clear. High 59°, low 40°.
Pressure29.80 inHg
Wind13.6 mph SW
Humidity43%
Visibility—
Dew point30°
Mon, 1658° / 43°0
Morning47°feels 43°
Afternoon54°feels 51°
Evening49°feels 47°
Overnight46°feels 43°
58 °
Big Sag, Monday, 16 November
Overcast. High 58°, low 43°.
Pressure29.77 inHg
Wind9.9 mph SW
Humidity31%
Visibility—
Dew point23°
Tue, 1751° / 39°0
Morning45°feels 42°
Afternoon49°feels 46°
Evening44°feels 39°
Overnight40°feels 34°
51 °
Big Sag, Tuesday, 17 November
Clear. High 51°, low 39°.
Pressure29.74 inHg
Wind17.6 mph SW
Humidity47%
Visibility—
Dew point30°
Wed, 1848° / 35°0
Morning39°feels 33°
Afternoon45°feels 40°
Evening40°feels 37°
Overnight35°feels 31°
48 °
Big Sag, Wednesday, 18 November
Partly cloudy. High 48°, low 35°.
Pressure29.85 inHg
Wind12 mph W
Humidity40%
Visibility—
Dew point21°
Thu, 1943° / 32°0
Morning35°feels 29°
Afternoon40°feels 36°
Evening37°feels 36°
Overnight33°feels 28°
43 °
Big Sag, Thursday, 19 November
Clear. High 43°, low 32°.
Pressure30.15 inHg
Wind8.6 mph W
Humidity52%
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 Big Sag, 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.