EN
English Español

As of 18:34 MDT

Weather in Big Arm, MT

39°Current weather

Big Arm, Monday, 26 October, 18:34

Overcast. Feels like 36°. High 46°, low 34°.

Pressure29.94 inHg
Wind4.1 mph SW
Humidity67%
Visibility2.3 mi
Dew point30°

10-day forecast for Big Arm, MT: 28° to 49°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.

44°
Best day: Friday, October 30
42° · 0.18 in
Worst day: Sunday, November 1

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

Tue, 2749° / 36°0.07Light rain
MorningOvercast40°feels 34°
AfternoonOvercast45°feels 40°
EveningPartly cloudy39°feels 34°
OvernightOvercast40°feels 36°
49 °Light rain

Big Arm, Tuesday, 27 October

Light rain. High 49°, low 36°.

Pressure29.94 inHg
Wind10 mph S
Humidity89%
Visibility6.2 mi
Dew point37°
Wed, 2840° / 35°0.13Snow
MorningLight rain36°feels 29°
AfternoonLight rain40°feels 35°
EveningOvercast36°feels 31°
OvernightOvercast38°feels 32°
40 °Snow

Big Arm, Wednesday, 28 October

Snow. High 40°, low 35°.

Pressure30.00 inHg
Wind8.4 mph S
Humidity79%
Visibility4.0 mi
Dew point33°
Thu, 2943° / 33°0Light snow
MorningOvercast33°feels 33°
AfternoonPartly cloudy42°feels 39°
EveningOvercast36°feels 32°
OvernightOvercast34°feels 29°
43 °Light snow

Big Arm, Thursday, 29 October

Light snow. High 43°, low 33°.

Pressure30.12 inHg
Wind3.5 mph SE
Humidity72%
Visibility6.2 mi
Dew point31°
Fri, 3044° / 34°0Overcast
MorningOvercast34°feels 29°
AfternoonOvercast43°feels 43°
EveningOvercast40°feels 40°
OvernightOvercast36°feels 30°
44 °Overcast

Big Arm, Friday, 30 October

Overcast. High 44°, low 34°.

Pressure29.97 inHg
Wind2.6 mph NE
Humidity71%
Visibility6.2 mi
Dew point31°
Sat, 3146° / 34°0.02Light rain
MorningLight rain37°feels 37°
AfternoonLight rain41°feels 41°
EveningLight rain42°feels 42°
OvernightLight rain39°feels 39°
46 °Light rain

Big Arm, Saturday, 31 October

Light rain. High 46°, low 34°.

Pressure30.00 inHg
Wind2.7 mph E
Humidity85%
Visibility—
Dew point36°
Sun, 0142° / 32°0.18Snow
MorningSnow37°feels 36°
AfternoonSnow41°feels 37°
EveningSnow39°feels 36°
OvernightSnow33°feels 28°
42 °Snow

Big Arm, Sunday, 1 November

Snow. High 42°, low 32°.

Pressure30.09 inHg
Wind6.3 mph SW
Humidity68%
Visibility—
Dew point30°
Mon, 0241° / 29°0.01Light snow
MorningLight snow32°feels 30°
AfternoonLight snow38°feels 38°
EveningLight snow35°feels 35°
OvernightLight snow30°feels 30°
41 °Light snow

Big Arm, Monday, 2 November

Light snow. High 41°, low 29°.

Pressure30.45 inHg
Wind4.4 mph SW
Humidity72%
Visibility—
Dew point29°
Tue, 0341° / 28°0Clear
MorningClear31°feels 31°
AfternoonClear37°feels 37°
EveningClear35°feels 35°
OvernightClear32°feels 32°
41 °Clear

Big Arm, Tuesday, 3 November

Clear. High 41°, low 28°.

Pressure30.47 inHg
Wind3.8 mph NE
Humidity67%
Visibility—
Dew point26°
Wed, 0444° / 31°0Overcast
MorningOvercast34°feels 34°
AfternoonOvercast38°feels 38°
EveningOvercast37°feels 37°
OvernightOvercast34°feels 34°
44 °Overcast

Big Arm, Wednesday, 4 November

Overcast. High 44°, low 31°.

Pressure30.18 inHg
Wind2.7 mph NE
Humidity64%
Visibility—
Dew point27°

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.