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As of 20:58 MDT

Weather in Big Arm, MT

48°Current weather

Big Arm, Thursday, 22 October, 20:58

Overcast. Feels like 48°. High 66°, low 37°.

Pressure29.68 inHg
Wind0.8 mph N
Humidity83%
Visibility6.2 mi
Dew point42°

Two-week outlook for Big Arm, MT: week one averages a high of 49.6° and week two 38.2°, so week two runs 11.4° cooler than week one. Around 0.5 inches of precipitation are expected over the 14 days, across 2 wet days. The nearest weekend, October 24: 50°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (October 22 – October 28)49.6°34.5°0.2 in / 1 d—
2nd (October 29 – November 4)38.2°28°0.3 in / 1 d—

Weekend weather

Sat, October 24
Clear
50°29°
no precip.
Sun, October 25
Overcast
50°35°
no precip.
Sat, October 31
Snow
35°31°
0.22 in
Sun, November 1
Light snow
38°27°
0.03 in
Fri, 2346° / 32°0.17Rain
46 °Rain

Big Arm, Friday, 23 October

Rain. High 46°, low 32°.

Pressure29.91 inHg
Wind9.5 mph N
Humidity91%
Visibility4.5 mi
Dew point44°
Sat, 2450° / 29°0Clear
50 °Clear

Big Arm, Saturday, 24 October

Clear. High 50°, low 29°.

Pressure30.24 inHg
Wind6.2 mph SW
Humidity64%
Visibility6.2 mi
Dew point34°
Sun, 2550° / 35°0Overcast
50 °Overcast

Big Arm, Sunday, 25 October

Overcast. High 50°, low 35°.

Pressure30.24 inHg
Wind7.6 mph NE
Humidity65%
Visibility6.2 mi
Dew point30°
Mon, 2648° / 35°0Overcast
48 °Overcast

Big Arm, Monday, 26 October

Overcast. High 48°, low 35°.

Pressure30.12 inHg
Wind3.1 mph NE
Humidity63%
Visibility6.2 mi
Dew point31°
Tue, 2745° / 37°0.01Light rain
45 °Light rain

Big Arm, Tuesday, 27 October

Light rain. High 45°, low 37°.

Pressure30.06 inHg
Wind4.5 mph NE
Humidity69%
Visibility—
Dew point33°
Wed, 2842° / 34°0.03Light snow
42 °Light snow

Big Arm, Wednesday, 28 October

Light snow. High 42°, low 34°.

Pressure30.39 inHg
Wind7.8 mph NE
Humidity79%
Visibility—
Dew point34°
Thu, 2938° / 28°0Partly cloudy
38 °Partly cloudy

Big Arm, Thursday, 29 October

Partly cloudy. High 38°, low 28°.

Pressure30.18 inHg
Wind8.9 mph N
Humidity56%
Visibility—
Dew point19°
Fri, 3037° / 29°0.04Snow
37 °Snow

Big Arm, Friday, 30 October

Snow. High 37°, low 29°.

Pressure30.00 inHg
Wind7.1 mph N
Humidity68%
Visibility—
Dew point25°
Sat, 3135° / 31°0.22Snow
35 °Snow

Big Arm, Saturday, 31 October

Snow. High 35°, low 31°.

Pressure30.06 inHg
Wind8.4 mph S
Humidity91%
Visibility—
Dew point31°
Sun, 0138° / 27°0.03Light snow
38 °Light snow

Big Arm, Sunday, 1 November

Light snow. High 38°, low 27°.

Pressure30.36 inHg
Wind3.3 mph S
Humidity83%
Visibility—
Dew point30°
Mon, 0239° / 27°0Partly cloudy
39 °Partly cloudy

Big Arm, Monday, 2 November

Partly cloudy. High 39°, low 27°.

Pressure30.62 inHg
Wind5.7 mph SW
Humidity75%
Visibility—
Dew point28°
Tue, 0339° / 25°0Overcast
39 °Overcast

Big Arm, Tuesday, 3 November

Overcast. High 39°, low 25°.

Pressure30.77 inHg
Wind1.9 mph E
Humidity77%
Visibility—
Dew point27°
Wed, 0441° / 28°0Overcast
41 °Overcast

Big Arm, Wednesday, 4 November

Overcast. High 41°, low 28°.

Pressure30.59 inHg
Wind2.8 mph NE
Humidity79%
Visibility—
Dew point29°

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 Arm, 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.