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As of 18:39 MST

Weather in Big Arm, MT

39°Current weather

Big Arm, Thursday, 12 November, 18:39

Overcast. Feels like 39°. High 53°, low 39°.

Pressure29.85 inHg
Wind0.8 mph NE
Humidity94%
Visibility1.7 mi
Dew point38°

10-day forecast for Big Arm, MT: 25° to 53°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.

53°
Best day: Thursday, November 12
42° · 0.16 in
Worst day: Monday, November 16

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

Fri, 1352° / 34°0Overcast
MorningOvercast34°feels 34°
AfternoonOvercast52°feels 49°
EveningOvercast41°feels 41°
OvernightOvercast36°feels 36°
52 °Overcast

Big Arm, Friday, 13 November

Overcast. High 52°, low 34°.

Pressure29.59 inHg
Wind1.6 mph SE
Humidity52%
Visibility—
Dew point34°
Sat, 1444° / 34°0.03Light rain
MorningOvercast34°feels 34°
AfternoonOvercast42°feels 42°
EveningPartly cloudy40°feels 40°
OvernightOvercast36°feels 36°
44 °Light rain

Big Arm, Saturday, 14 November

Light rain. High 44°, low 34°.

Pressure29.83 inHg
Wind2.2 mph SW
Humidity94%
Visibility6.2 mi
Dew point39°
Sun, 1548° / 36°0Overcast
MorningMostly clear36°feels 36°
AfternoonPartly cloudy48°feels 46°
EveningOvercast44°feels 42°
OvernightClear39°feels 39°
48 °Overcast

Big Arm, Sunday, 15 November

Overcast. High 48°, low 36°.

Pressure29.94 inHg
Wind4.9 mph SW
Humidity61%
Visibility6.2 mi
Dew point33°
Mon, 1642° / 35°0.16Light rain
MorningLight rain39°feels 39°
AfternoonLight rain40°feels 40°
EveningLight rain38°feels 38°
OvernightOvercast42°feels 40°
42 °Light rain

Big Arm, Monday, 16 November

Light rain. High 42°, low 35°.

Pressure30.03 inHg
Wind2.2 mph SW
Humidity94%
Visibility4.9 mi
Dew point38°
Tue, 1740° / 33°0.07Snow
MorningSnow35°feels 35°
AfternoonSnow38°feels 35°
EveningSnow37°feels 33°
OvernightSnow35°feels 29°
40 °Snow

Big Arm, Tuesday, 17 November

Snow. High 40°, low 33°.

Pressure30.09 inHg
Wind12.7 mph NE
Humidity84%
Visibility—
Dew point33°
Wed, 1837° / 34°0.11Light snow
MorningLight snow34°feels 32°
AfternoonLight snow36°feels 35°
EveningLight snow37°feels 34°
OvernightLight snow36°feels 32°
37 °Light snow

Big Arm, Wednesday, 18 November

Light snow. High 37°, low 34°.

Pressure29.91 inHg
Wind5.5 mph NW
Humidity93%
Visibility—
Dew point34°
Thu, 1939° / 33°0Overcast
MorningOvercast34°feels 28°
AfternoonOvercast36°feels 31°
EveningOvercast37°feels 33°
OvernightOvercast33°feels 26°
39 °Overcast

Big Arm, Thursday, 19 November

Overcast. High 39°, low 33°.

Pressure30.03 inHg
Wind8.9 mph N
Humidity71%
Visibility—
Dew point27°
Fri, 2038° / 28°0Overcast
MorningOvercast32°feels 26°
AfternoonOvercast35°feels 31°
EveningOvercast33°feels 33°
OvernightOvercast29°feels 28°
38 °Overcast

Big Arm, Friday, 20 November

Overcast. High 38°, low 28°.

Pressure30.18 inHg
Wind6.5 mph N
Humidity67%
Visibility—
Dew point24°
Sat, 2138° / 25°0Overcast
MorningOvercast29°feels 29°
AfternoonOvercast33°feels 32°
EveningOvercast30°feels 26°
OvernightOvercast27°feels 27°
38 °Overcast

Big Arm, Saturday, 21 November

Overcast. High 38°, low 25°.

Pressure30.27 inHg
Wind5.2 mph S
Humidity77%
Visibility—
Dew point26°

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.