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As of 01:35 MDT

Weather in Big Sag, MT

67°Current weather

Big Sag, Sunday, 9 August, 01:35

Overcast. Feels like 65°. High 81°, low 53°.

Pressure29.88 inHg
Wind5.2 mph SE
Humidity38%
Visibility6.2 mi
Dew point40°

10-day forecast for Big Sag, MT: 48° to 88°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.

88°
Best day: Monday, August 17
64° · 0.07 in
Worst day: Friday, August 14

Tap any day below to see morning, afternoon, evening and overnight.

Mon, 1085° / 48°0Clear
MorningMostly clear56°feels 53°
AfternoonClear79°feels 79°
EveningClear80°feels 80°
OvernightOvercast55°feels 53°
85 °Clear

Big Sag, Monday, 10 August

Clear. High 85°, low 48°.

Pressure29.83 inHg
Wind6.2 mph NW
Humidity22%
Visibility6.2 mi
Dew point39°
Tue, 1185° / 62°0Clear
MorningClear65°feels 63°
AfternoonClear83°feels 80°
EveningClear78°feels 76°
OvernightClear69°feels 67°
85 °Clear

Big Sag, Tuesday, 11 August

Clear. High 85°, low 62°.

Pressure29.94 inHg
Wind8.8 mph NW
Humidity31%
Visibility6.2 mi
Dew point44°
Wed, 1286° / 60°0Overcast
MorningPartly cloudy65°feels 63°
AfternoonOvercast84°feels 81°
EveningOvercast80°feels 80°
OvernightClear66°feels 64°
86 °Overcast

Big Sag, Wednesday, 12 August

Overcast. High 86°, low 60°.

Pressure29.91 inHg
Wind0.5 mph N
Humidity29%
Visibility6.2 mi
Dew point42°
Thu, 1383° / 62°0.02Light rain
MorningLight rain66°feels 65°
AfternoonLight rain78°feels 76°
EveningLight rain81°feels 79°
OvernightLight rain66°feels 66°
83 °Light rain

Big Sag, Thursday, 13 August

Light rain. High 83°, low 62°.

Pressure29.83 inHg
Wind12.9 mph SE
Humidity39%
Visibility—
Dew point48°
Fri, 1464° / 56°0.07Light rain
MorningLight rain57°feels 56°
AfternoonLight rain61°feels 60°
EveningLight rain64°feels 63°
OvernightLight rain60°feels 59°
64 °Light rain

Big Sag, Friday, 14 August

Light rain. High 64°, low 56°.

Pressure30.06 inHg
Wind11.9 mph N
Humidity74%
Visibility—
Dew point52°
Sat, 1584° / 55°0.07Light rain
MorningLight rain60°feels 60°
AfternoonLight rain77°feels 76°
EveningLight rain81°feels 80°
OvernightLight rain64°feels 64°
84 °Light rain

Big Sag, Saturday, 15 August

Light rain. High 84°, low 55°.

Pressure30.06 inHg
Wind14 mph E
Humidity45%
Visibility—
Dew point50°
Sun, 1683° / 64°0Overcast
MorningOvercast69°feels 68°
AfternoonOvercast82°feels 80°
EveningOvercast75°feels 74°
OvernightOvercast69°feels 68°
83 °Overcast

Big Sag, Sunday, 16 August

Overcast. High 83°, low 64°.

Pressure29.88 inHg
Wind15.4 mph S
Humidity30%
Visibility—
Dew point46°
Mon, 1788° / 62°0.01Light rain
MorningLight rain68°feels 66°
AfternoonLight rain83°feels 81°
EveningLight rain85°feels 81°
OvernightLight rain67°feels 66°
88 °Light rain

Big Sag, Monday, 17 August

Light rain. High 88°, low 62°.

Pressure29.83 inHg
Wind13.4 mph W
Humidity29%
Visibility—
Dew point45°
Tue, 1883° / 61°0Overcast
MorningOvercast66°feels 65°
AfternoonOvercast79°feels 79°
EveningOvercast79°feels 77°
OvernightOvercast69°feels 67°
83 °Overcast

Big Sag, Tuesday, 18 August

Overcast. High 83°, low 61°.

Pressure29.80 inHg
Wind19.8 mph W
Humidity33%
Visibility—
Dew point45°

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.