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As of 12:55 MDT

Weather in Big Sag, MT

74°Current weather

Big Sag, Sunday, 9 August, 12:55

Clear. Feels like 73°. High 79°, low 53°.

Pressure29.91 inHg
Wind9.3 mph NW
Humidity38%
Visibility6.2 mi
Dew point47°

Two-week outlook for Big Sag, MT: week one averages a high of 77.9° and week two 88.5°, so week two runs 10.5° warmer than week one. Around 0.2 inches of precipitation are expected over the 14 days, across 1 wet days. The nearest weekend, August 9: 79°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (August 9 – August 15)77.9°54.4°0.2 in / 1 d—
2nd (August 16 – August 22)88.5°65°0.0 in / 0 d—

Weekend weather

Sun, August 9
Clear
79°53°
no precip.
Sat, August 15
Light rain
82°61°
0.01 in
Sun, August 16
Overcast
85°63°
no precip.
Sat, August 22
Mostly clear
85°68°
no precip.
Mon, 1084° / 49°0Clear
84 °Clear

Big Sag, Monday, 10 August

Clear. High 84°, low 49°.

Pressure29.83 inHg
Wind6 mph NW
Humidity21%
Visibility6.2 mi
Dew point38°
Tue, 1185° / 49°0Clear
85 °Clear

Big Sag, Tuesday, 11 August

Clear. High 85°, low 49°.

Pressure29.94 inHg
Wind8 mph NW
Humidity34%
Visibility6.2 mi
Dew point46°
Wed, 1282° / 58°0.01Light rain
82 °Light rain

Big Sag, Wednesday, 12 August

Light rain. High 82°, low 58°.

Pressure29.94 inHg
Wind0.8 mph NE
Humidity40%
Visibility6.2 mi
Dew point47°
Thu, 1366° / 56°0.17Light rain
66 °Light rain

Big Sag, Thursday, 13 August

Light rain. High 66°, low 56°.

Pressure29.94 inHg
Wind2.5 mph E
Humidity70%
Visibility6.2 mi
Dew point54°
Fri, 1467° / 55°0Overcast
67 °Overcast

Big Sag, Friday, 14 August

Overcast. High 67°, low 55°.

Pressure30.06 inHg
Wind7.2 mph N
Humidity77%
Visibility—
Dew point51°
Sat, 1582° / 61°0.01Light rain
82 °Light rain

Big Sag, Saturday, 15 August

Light rain. High 82°, low 61°.

Pressure29.97 inHg
Wind9.1 mph E
Humidity44%
Visibility—
Dew point50°
Sun, 1685° / 63°0Overcast
85 °Overcast

Big Sag, Sunday, 16 August

Overcast. High 85°, low 63°.

Pressure29.80 inHg
Wind24.2 mph NW
Humidity25%
Visibility—
Dew point42°
Mon, 1784° / 60°0Overcast
84 °Overcast

Big Sag, Monday, 17 August

Overcast. High 84°, low 60°.

Pressure29.85 inHg
Wind16 mph W
Humidity22%
Visibility—
Dew point34°
Tue, 1889° / 63°0Overcast
89 °Overcast

Big Sag, Tuesday, 18 August

Overcast. High 89°, low 63°.

Pressure29.85 inHg
Wind17 mph W
Humidity16%
Visibility—
Dew point31°
Wed, 1990° / 65°0Overcast
90 °Overcast

Big Sag, Wednesday, 19 August

Overcast. High 90°, low 65°.

Pressure29.88 inHg
Wind14.5 mph W
Humidity21%
Visibility—
Dew point38°
Thu, 2092° / 68°0Overcast
92 °Overcast

Big Sag, Thursday, 20 August

Overcast. High 92°, low 68°.

Pressure29.88 inHg
Wind18.3 mph NW
Humidity21%
Visibility—
Dew point40°
Fri, 2193° / 68°0Partly cloudy
93 °Partly cloudy

Big Sag, Friday, 21 August

Partly cloudy. High 93°, low 68°.

Pressure29.94 inHg
Wind15.2 mph NW
Humidity23%
Visibility—
Dew point43°
Sat, 2285° / 68°0Mostly clear
85 °Mostly clear

Big Sag, Saturday, 22 August

Mostly clear. High 85°, low 68°.

Pressure30.06 inHg
Wind8.8 mph W
Humidity44%
Visibility—
Dew point53°

About this forecast

Can I plan a trip on a 2-week forecast?

Week one is solid for planning — accuracy is high. Week two shows the trend: go by the averages and the comparison with normal, and check the details closer to the date.

What does the "Vs normal" column mean?

It is the gap between the forecast and the climate normal for those same dates in Big Sag, MT, computed over 60 years. A positive value means the week runs warmer than usual.

Why are weekends shown separately?

Saturday and Sunday plans are what people check most, so we give them their own cards with temperature and precipitation.