Big Arm, MT 14 Day Weather - 59910 WeatherWorld.com

Feedback E-mail the Weather

Quick Weather Clicks

Big Arm, MT Weather - 14-Day Weather Forecast

Current Conditions

Settings
Big Arm MT Weather - Overcast - 55°F
Overcast
55°F
Updated 9:36 pm
Feels Like 53°F
Humidity 83%
Wind NNE 3 mph
Barometer  30.02 in
Dew Point 50°F
Big Arm MT Weather - Overcast - 13°C
Overcast
13°C
Updated 9:36 pm
Feels Like 12°C
Humidity 83%
Wind NNE 5 km/h
Barometer  101.7 kPa
Dew Point 10°C
Big Arm, MT Weather and Current Conditionsbig arm mt weather forecast

Big Arm, MT Weather Forecast

Big Arm Montana WeatherBig Arm, Montana Weather Weather Forecast
Here is the API 14 day weather forecast for Big Arm, Montana. Note: The 7-day weather forecast for Big Arm, MT is the most reliable and accurate weather forecast. This template should only be used as a probable scenario. Forecasting weather beyond the next 7 days is a challenge.
Big Arm, MT Weather Forecast Dated: 936 PM Fri Sep 04 2026
Expect a cool pattern with more clouds than sun and frequent chances of rain over the coming period. moderate humidity and no major pressure swings will dominate.

Friday, September 4, 2026

Mid-Morning
Big Arm Weather - 2026-09-04 - Morning - Rain
51°F 11°C
Rain
Mid-Afternoon
Big Arm Weather - 2026-09-04 - Afternoon - Partly Cloudy
63°F 17°C
Partly Cloudy
Early-Evening
Big Arm Weather - 2026-09-04 - Evening - Overcast
61°F 16°C
Overcast
Refreshing around 63°F 17°C, early showers breaking for a drier afternoon, with lower humidity and steady pressure.

Saturday, September 5, 2026

Mid-Morning
Big Arm Weather - 2026-09-05 - Morning - Light Showers
53°F 12°C
Light Showers
Mid-Afternoon
Big Arm Weather - 2026-09-05 - Afternoon - Sunny
66°F 19°C
Sunny
Early-Evening
Big Arm Weather - 2026-09-05 - Evening - Sunny
61°F 16°C
Sunny
Mildly cool near 66°F 19°C, scattered morning showers before drying out later, with steady humidity and barometric pressure falling.

Sunday, September 6, 2026

Mid-Morning
Big Arm Weather - 2026-09-06 - Morning - Partly Cloudy
53°F 12°C
Partly Cloudy
Mid-Afternoon
Big Arm Weather - 2026-09-06 - Afternoon - Overcast
65°F 18°C
Overcast
Early-Evening
Big Arm Weather - 2026-09-06 - Evening - Overcast
62°F 17°C
Overcast
Comfortable at 65°F 18°C, cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and barometric pressure falling.

Monday, September 7, 2026

Mid-Morning
Big Arm Weather - 2026-09-07 - Morning - Overcast
55°F 13°C
Overcast
Mid-Afternoon
Big Arm Weather - 2026-09-07 - Afternoon - Light Showers
64°F 18°C
Light Showers
Early-Evening
Big Arm Weather - 2026-09-07 - Evening - Light Showers
52°F 11°C
Light Showers
Cool with a high near 64°F 18°C, drier morning followed by showers lasting through evening, with increasing humidity and steady pressure. Winds picking up from NNW at 1 mph 2 km/h to S at 11 mph 17 km/h.

Tuesday, September 8, 2026

Mid-Morning
Big Arm Weather - 2026-09-08 - Morning - Sunny
50°F 10°C
Sunny
Mid-Afternoon
Big Arm Weather - 2026-09-08 - Afternoon - Overcast
69°F 20°C
Overcast
Early-Evening
Big Arm Weather - 2026-09-08 - Evening - Sunny
64°F 18°C
Sunny
Mild with a high of 69°F 20°C, sunny in the morning, overcast in the afternoon, and sunny this evening, with lower humidity and steady pressure.

Wednesday, September 9, 2026

Mid-Morning
Big Arm Weather - 2026-09-09 - Morning - Overcast
54°F 12°C
Overcast
Mid-Afternoon
Big Arm Weather - 2026-09-09 - Afternoon - Sunny
73°F 23°C
Sunny
Early-Evening
Big Arm Weather - 2026-09-09 - Evening - Overcast
68°F 20°C
Overcast
Pleasant near 73°F 23°C, overcast in the morning, sunny in the afternoon, and overcast this evening, with lower humidity and barometric pressure falling.

Thursday, September 10, 2026

Mid-Morning
Big Arm Weather - 2026-09-10 - Morning - Cloudy
58°F 14°C
Cloudy
Mid-Afternoon
Big Arm Weather - 2026-09-10 - Afternoon - Overcast
82°F 28°C
Overcast
Early-Evening
Big Arm Weather - 2026-09-10 - Evening - Overcast
72°F 22°C
Overcast
Balmy with temperatures reaching 82°F 28°C, overcast throughout the day, with lower humidity and barometric pressure falling. Winds building from SSW at 4 mph 6 km/h to SW at 13 mph 20 km/h. Gusts up to 24 mph 39 km/h.

Friday, September 11, 2026

Mid-Morning
Big Arm Weather - 2026-09-11 - Morning - Light Showers
58°F 14°C
Light Showers
Mid-Afternoon
Big Arm Weather - 2026-09-11 - Afternoon - Light Showers
53°F 12°C
Light Showers
Early-Evening
Big Arm Weather - 2026-09-11 - Evening - Light Showers
53°F 12°C
Light Showers
Crisp with a high near 53°F 12°C, persistent showers off and on through the day, with increasing humidity and steady pressure.

Saturday, September 12, 2026

Mid-Morning
Big Arm Weather - 2026-09-12 - Morning - Scattered Showers
55°F 13°C
Scattered Showers
Mid-Afternoon
Big Arm Weather - 2026-09-12 - Afternoon - Sunny
69°F 21°C
Sunny
Early-Evening
Big Arm Weather - 2026-09-12 - Evening - Partly Cloudy
64°F 18°C
Partly Cloudy
Mild temperatures up to 69°F 21°C, locally heavy downpours at times, with lower humidity and steady pressure.

Sunday, September 13, 2026

Mid-Morning
Big Arm Weather - 2026-09-13 - Morning - Cloudy
52°F 11°C
Cloudy
Mid-Afternoon
Big Arm Weather - 2026-09-13 - Afternoon - Cloudy
69°F 20°C
Cloudy
Early-Evening
Big Arm Weather - 2026-09-13 - Evening - Cloudy
60°F 16°C
Cloudy
Mild with a high of 69°F 20°C, cloudy through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds moving from the SSW to the SSE at 5 mph 8 km/h.

Monday, September 14, 2026

Mid-Morning
Big Arm Weather - 2026-09-14 - Morning - Overcast
53°F 12°C
Overcast
Mid-Afternoon
Big Arm Weather - 2026-09-14 - Afternoon - Overcast
60°F 16°C
Overcast
Early-Evening
Big Arm Weather - 2026-09-14 - Evening - Nearby Thunderstorms
53°F 12°C
Nearby Thunderstorms
Comfortable at 60°F 16°C, locally heavy thunderstorms at times, with steady humidity and steady pressure. Winds out of the WSW at 13 mph 20 km/h.

Tuesday, September 15, 2026

Mid-Morning
Big Arm Weather - 2026-09-15 - Morning - Light Showers
46°F 8°C
Light Showers
Mid-Afternoon
Big Arm Weather - 2026-09-15 - Afternoon - Light Showers
53°F 12°C
Light Showers
Early-Evening
Big Arm Weather - 2026-09-15 - Evening - Light Showers
47°F 8°C
Light Showers
Crisp with a high near 53°F 12°C, on-and-off showers throughout the day, with steady humidity and barometric pressure rising. Winds shifting from the SSW to the N at 10 mph 16 km/h.

Wednesday, September 16, 2026

Mid-Morning
Big Arm Weather - 2026-09-16 - Morning - Scattered Showers
43°F 6°C
Scattered Showers
Mid-Afternoon
Big Arm Weather - 2026-09-16 - Afternoon - Overcast
49°F 9°C
Overcast
Early-Evening
Big Arm Weather - 2026-09-16 - Evening - Overcast
48°F 9°C
Overcast
Brisk around 49°F 9°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds turning from the NNE to the N at 11 mph 18 km/h.

Thursday, September 17, 2026

Mid-Morning
Big Arm Weather - 2026-09-17 - Morning - Sunny
39°F 4°C
Sunny
Mid-Afternoon
Big Arm Weather - 2026-09-17 - Afternoon - Sunny
53°F 12°C
Sunny
Early-Evening
Big Arm Weather - 2026-09-17 - Evening - Overcast
48°F 9°C
Overcast
Cool and brisk at 53°F 12°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling. Winds switching from the NNE to the N at 13 mph 20 km/h.

Trending Headlines

Big Arm, MT Weather Radar Map

Use the map search tool if you want to place a location marker on the radar map...

Big Arm, MT 7 Day Weather

National Two Day Weather Forecast


E-mail the Big Arm Weather Forecast

Voice your opinion or tell us about page issues...

Weather by the Numbers

Fri, 4th
Big Arm MT Weather - Friday, Sep 4, 2026 - Partly Cloudy
Hi: 65°F 18°C
Lo: 49°F 10°C
Sunrise 07:00 AM
Sunset 08:11 PM
Wind SE 1 mph1 km/h
Dew Point 48°F9°C
uv Index 2
Barometric Pressure 29.94 in1014 mb
POP 9% *
Humidity 74%
Sat, 5th
Big Arm MT Weather - Saturday, Sep 5, 2026 - Patchy Rain Nearby
Hi: 67°F 20°C
Lo: 51°F 10°C
Sunrise 07:01 AM
Sunset 08:09 PM
Wind N 6 mph9 km/h
Dew Point 45°F7°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 22% *
Humidity 64%
Sun, 6th
Big Arm MT Weather - Sunday, Sep 6, 2026 - Overcast
Hi: 67°F 19°C
Lo: 51°F 10°C
Sunrise 07:02 AM
Sunset 08:07 PM
Wind E 2 mph4 km/h
Dew Point 49°F9°C
uv Index 4
Barometric Pressure 30 in1016 mb
POP 18% *
Humidity 70%
Mon, 7th
Big Arm MT Weather - Monday, Sep 7, 2026 - Overcast
Hi: 64°F 18°C
Lo: 49°F 10°C
Sunrise 07:04 AM
Sunset 08:05 PM
Wind NE 1 mph1 km/h
Dew Point 50°F10°C
uv Index 3
Barometric Pressure 29.8 in1009 mb
POP 17% *
Humidity 67%
Tue, 8th
Big Arm MT Weather - Tuesday, Sep 8, 2026 - Sunny
Hi: 71°F 21°C
Lo: 45°F 7°C
Sunrise 07:05 AM
Sunset 08:03 PM
Wind SW 3 mph5 km/h
Dew Point 45°F7°C
uv Index 4
Barometric Pressure 30.12 in1020 mb
POP 2% *
Humidity 51%
Wed, 9th
Big Arm MT Weather - Wednesday, Sep 9, 2026 - Cloudy
Hi: 75°F 24°C
Lo: 47°F 9°C
Sunrise 07:06 AM
Sunset 08:01 PM
Wind S 2 mph3 km/h
Dew Point 39°F4°C
uv Index 4
Barometric Pressure 30.12 in1020 mb
POP 5% *
Humidity 38%
Thu, 10th
Big Arm MT Weather - Thursday, Sep 10, 2026 - Overcast
Hi: 82°F 28°C
Lo: 52°F 11°C
Sunrise 07:08 AM
Sunset 07:59 PM
Wind SSW 5 mph8 km/h
Dew Point 41°F5°C
uv Index 5
Barometric Pressure 29.88 in1012 mb
POP 10% *
Humidity 35%
Fri, 11th
Big Arm MT Weather - Friday, Sep 11, 2026 - Light Rain Shower
Hi: 67°F 20°C
Lo: 53°F 12°C
Sunrise 07:09 AM
Sunset 07:57 PM
Wind NNE 4 mph6 km/h
Dew Point 50°F10°C
uv Index 3
Barometric Pressure 29.8 in1009 mb
POP 40% *
Humidity 78%
Sat, 12th
Big Arm MT Weather - Saturday, Sep 12, 2026 - Patchy Rain Nearby
Hi: 69°F 21°C
Lo: 52°F 11°C
Sunrise 07:10 AM
Sunset 07:55 PM
Wind SW 6 mph9 km/h
Dew Point 44°F7°C
uv Index 4
Barometric Pressure 29.77 in1008 mb
POP 17% *
Humidity 49%
Sun, 13th
Big Arm MT Weather - Sunday, Sep 13, 2026 - Overcast
Hi: 69°F 20°C
Lo: 47°F 8°C
Sunrise 07:12 AM
Sunset 07:53 PM
Wind SW 9 mph15 km/h
Dew Point 39°F4°C
uv Index 4
Barometric Pressure 29.83 in1010 mb
POP 10% *
Humidity 44%
Mon, 14th
Big Arm MT Weather - Monday, Sep 14, 2026 - Overcast
Hi: 62°F 17°C
Lo: 48°F 9°C
Sunrise 07:13 AM
Sunset 07:51 PM
Wind SW 7 mph12 km/h
Dew Point 40°F5°C
uv Index 4
Barometric Pressure 29.74 in1007 mb
POP 11% *
Humidity 45%
Tue, 15th
Big Arm MT Weather - Tuesday, Sep 15, 2026 - Patchy Rain Nearby
Hi: 54°F 12°C
Lo: 43°F 6°C
Sunrise 07:14 AM
Sunset 07:49 PM
Wind SW 10 mph15 km/h
Dew Point 39°F4°C
uv Index 3
Barometric Pressure 29.94 in1014 mb
POP 19% *
Humidity 58%
Wed, 16th
Big Arm MT Weather - Wednesday, Sep 16, 2026 - Patchy Rain Nearby
Hi: 50°F 10°C
Lo: 42°F 6°C
Sunrise 07:16 AM
Sunset 07:47 PM
Wind N 7 mph12 km/h
Dew Point 40°F5°C
uv Index 2
Barometric Pressure 30.33 in1027 mb
POP 28% *
Humidity 86%
Thu, 17th
Big Arm MT Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 53°F 12°C
Lo: 37°F 3°C
Sunrise 07:17 AM
Sunset 07:45 PM
Wind N 10 mph16 km/h
Dew Point 25°F-4°C
uv Index 3
Barometric Pressure 30.45 in1031 mb
POP 2% *
Humidity 45%
* POP = Probability of Precipitation. Data for 12:00 PM.