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As of 17:00 MST

Weather in Big Arm, MT

38°Current weather

Big Arm, Saturday, 14 November, 17:00

Partly cloudy. Feels like 38°. High 42°, low 31°.

Pressure29.91 inHg
Wind2.6 mph SW
Humidity51%
Visibility0.3 mi
Dew point26°

10-day forecast for Big Arm, MT: 29° to 43°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.

43°
Best day: Monday, November 23
41° · 0.23 in
Worst day: Tuesday, November 17

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

Sun, 1540° / 29°0.01Light rain
MorningOvercast29°feels 29°
AfternoonOvercast40°feels 37°
EveningLight rain34°feels 34°
OvernightOvercast32°feels 32°
40 °Light rain

Big Arm, Sunday, 15 November

Light rain. High 40°, low 29°.

Pressure29.97 inHg
Wind4 mph SW
Humidity69%
Visibility6.2 mi
Dew point32°
Mon, 1642° / 33°0.04Light rain
MorningOvercast39°feels 39°
AfternoonOvercast42°feels 42°
EveningOvercast39°feels 39°
OvernightOvercast35°feels 35°
42 °Light rain

Big Arm, Monday, 16 November

Light rain. High 42°, low 33°.

Pressure30.09 inHg
Wind2.3 mph SW
Humidity95%
Visibility6.2 mi
Dew point40°
Tue, 1741° / 35°0.23Snow
MorningOvercast36°feels 34°
AfternoonLight rain40°feels 37°
EveningSnow35°feels 32°
OvernightOvercast38°feels 38°
41 °Snow

Big Arm, Tuesday, 17 November

Snow. High 41°, low 35°.

Pressure29.97 inHg
Wind5.5 mph N
Humidity82%
Visibility6.2 mi
Dew point34°
Wed, 1839° / 34°0.04Snow
MorningOvercast34°feels 34°
AfternoonOvercast39°feels 39°
EveningSnow36°feels 36°
OvernightOvercast34°feels 34°
39 °Snow

Big Arm, Wednesday, 18 November

Snow. High 39°, low 34°.

Pressure30.09 inHg
Wind1.9 mph NE
Humidity85%
Visibility6.2 mi
Dew point33°
Thu, 1941° / 32°0Partly cloudy
MorningPartly cloudy34°feels 34°
AfternoonPartly cloudy38°feels 38°
EveningPartly cloudy35°feels 35°
OvernightPartly cloudy33°feels 30°
41 °Partly cloudy

Big Arm, Thursday, 19 November

Partly cloudy. High 41°, low 32°.

Pressure30.09 inHg
Wind3 mph N
Humidity83%
Visibility—
Dew point33°
Fri, 2039° / 32°0Overcast
MorningOvercast33°feels 33°
AfternoonOvercast37°feels 36°
EveningOvercast37°feels 35°
OvernightOvercast36°feels 33°
39 °Overcast

Big Arm, Friday, 20 November

Overcast. High 39°, low 32°.

Pressure30.03 inHg
Wind4.6 mph SW
Humidity73%
Visibility—
Dew point28°
Sat, 2141° / 34°0Overcast
MorningOvercast35°feels 32°
AfternoonOvercast39°feels 39°
EveningOvercast38°feels 38°
OvernightOvercast36°feels 35°
41 °Overcast

Big Arm, Saturday, 21 November

Overcast. High 41°, low 34°.

Pressure30.21 inHg
Wind5.6 mph S
Humidity77%
Visibility—
Dew point32°
Sun, 2242° / 33°0Overcast
MorningOvercast35°feels 35°
AfternoonOvercast39°feels 39°
EveningOvercast38°feels 37°
OvernightOvercast35°feels 31°
42 °Overcast

Big Arm, Sunday, 22 November

Overcast. High 42°, low 33°.

Pressure30.12 inHg
Wind5.7 mph SW
Humidity75%
Visibility—
Dew point31°
Mon, 2343° / 32°0Overcast
MorningOvercast34°feels 34°
AfternoonOvercast39°feels 37°
EveningOvercast37°feels 37°
OvernightOvercast34°feels 34°
43 °Overcast

Big Arm, Monday, 23 November

Overcast. High 43°, low 32°.

Pressure30.18 inHg
Wind5.7 mph SW
Humidity82%
Visibility—
Dew point33°

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 Arm, 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.