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As of 20:20 MDT

Weather in Big Arm, MT

38°Current weather

Big Arm, Saturday, 31 October, 20:20

Overcast. Feels like 38°. High 45°, low 35°.

Pressure30.06 inHg
Wind1.2 mph N
Humidity55%
Visibility6.2 mi
Dew point27°

10-day forecast for Big Arm, MT: 34° to 59°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.

59°
Best day: Sunday, November 8
49° · 0.06 in
Worst day: Monday, November 9

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

Sun, 0143° / 34°0Overcast
MorningOvercast37°feels 37°
AfternoonOvercast42°feels 42°
EveningPartly cloudy37°feels 37°
OvernightOvercast35°feels 35°
43 °Overcast

Big Arm, Sunday, 1 November

Overcast. High 43°, low 34°.

Pressure29.94 inHg
Wind0.6 mph S
Humidity78%
Visibility6.2 mi
Dew point37°
Mon, 0242° / 35°0Overcast
MorningOvercast36°feels 36°
AfternoonOvercast41°feels 38°
EveningClear37°feels 37°
OvernightPartly cloudy36°feels 36°
42 °Overcast

Big Arm, Monday, 2 November

Overcast. High 42°, low 35°.

Pressure30.39 inHg
Wind4.4 mph S
Humidity83%
Visibility6.2 mi
Dew point35°
Tue, 0346° / 35°0Overcast
MorningOvercast36°feels 36°
AfternoonOvercast45°feels 45°
EveningOvercast42°feels 42°
OvernightOvercast35°feels 35°
46 °Overcast

Big Arm, Tuesday, 3 November

Overcast. High 46°, low 35°.

Pressure30.21 inHg
Wind1.4 mph S
Humidity89%
Visibility1.3 mi
Dew point38°
Wed, 0447° / 37°0Mostly clear
MorningOvercast37°feels 37°
AfternoonClear46°feels 45°
EveningClear41°feels 41°
OvernightOvercast38°feels 38°
47 °Mostly clear

Big Arm, Wednesday, 4 November

Mostly clear. High 47°, low 37°.

Pressure30.15 inHg
Wind2.5 mph S
Humidity77%
Visibility1.9 mi
Dew point37°
Thu, 0544° / 37°0Overcast
MorningOvercast38°feels 37°
AfternoonOvercast40°feels 37°
EveningOvercast42°feels 36°
OvernightOvercast39°feels 35°
44 °Overcast

Big Arm, Thursday, 5 November

Overcast. High 44°, low 37°.

Pressure30.09 inHg
Wind11.6 mph SW
Humidity76%
Visibility—
Dew point33°
Fri, 0643° / 35°0Overcast
MorningOvercast37°feels 35°
AfternoonOvercast41°feels 36°
EveningOvercast42°feels 38°
OvernightOvercast39°feels 35°
43 °Overcast

Big Arm, Friday, 6 November

Overcast. High 43°, low 35°.

Pressure30.09 inHg
Wind10.3 mph S
Humidity81%
Visibility—
Dew point34°
Sat, 0753° / 37°0Overcast
MorningOvercast40°feels 37°
AfternoonOvercast47°feels 45°
EveningOvercast48°feels 47°
OvernightOvercast43°feels 40°
53 °Overcast

Big Arm, Saturday, 7 November

Overcast. High 53°, low 37°.

Pressure30.15 inHg
Wind5.4 mph SW
Humidity69%
Visibility—
Dew point36°
Sun, 0859° / 43°0.03Light rain
MorningLight rain46°feels 43°
AfternoonLight rain53°feels 50°
EveningLight rain49°feels 48°
OvernightLight rain46°feels 45°
59 °Light rain

Big Arm, Sunday, 8 November

Light rain. High 59°, low 43°.

Pressure29.91 inHg
Wind8.8 mph SW
Humidity57%
Visibility—
Dew point37°
Mon, 0949° / 42°0.06Light rain
MorningLight rain45°feels 44°
AfternoonLight rain46°feels 43°
EveningLight rain47°feels 47°
OvernightLight rain44°feels 44°
49 °Light rain

Big Arm, Monday, 9 November

Light rain. High 49°, low 42°.

Pressure30.21 inHg
Wind7.2 mph N
Humidity74%
Visibility—
Dew point38°

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.