Arrowhead Lake, MT 14 Day Weather

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Arrowhead Lake, MT Weather - 14-Day Weather Forecast

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Arrowhead Lake MT Weather - Clear - 68°F
Clear
68°F
Updated 7:06 pm
Feels Like 60°F
Humidity 52%
Wind SSE 5 mph
Barometer  30.1 in
Dew Point 50°F
Arrowhead Lake MT Weather - Clear - 20°C
Clear
20°C
Updated 7:06 pm
Feels Like 16°C
Humidity 52%
Wind SSE 8 km/h
Barometer  101.9 kPa
Dew Point 10°C
Arrowhead Lake, MT Weather and Current Conditionsarrowhead lake mt weather forecast

Arrowhead Lake, MT Weather Forecast

Arrowhead Lake Montana WeatherArrowhead Lake, Montana Weather Weather Forecast
14 day API forecast for Arrowhead Lake. Note. The 7-day Arrowhead Lake weather forecast is the most reliable and accurate forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days in advance.
Arrowhead Lake, MT Weather Forecast Dated: 706 PM Thu Sep 17 2026
Expect a cool pattern with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Thursday, September 17, 2026

Mid-Morning
Arrowhead Lake Weather - 2026-09-17 - Morning - Overcast
56°F 13°C
Overcast
Mid-Afternoon
Arrowhead Lake Weather - 2026-09-17 - Afternoon - Scattered Showers
74°F 23°C
Scattered Showers
Early-Evening
Arrowhead Lake Weather - 2026-09-17 - Evening - Scattered Showers
67°F 20°C
Scattered Showers
Pleasant near 74°F 23°C, periods of heavy rain and gusty conditions, with steady humidity and barometric pressure falling. Winds turning from the ESE to the SW at 9 mph 14 km/h.

Friday, September 18, 2026

Mid-Morning
Arrowhead Lake Weather - 2026-09-18 - Morning - Scattered Showers
66°F 19°C
Scattered Showers
Mid-Afternoon
Arrowhead Lake Weather - 2026-09-18 - Afternoon - Scattered Showers
75°F 24°C
Scattered Showers
Early-Evening
Arrowhead Lake Weather - 2026-09-18 - Evening - Light Showers
61°F 16°C
Light Showers
Comfortable with temperatures reaching 75°F 24°C, scattered downpours possible, with increasing humidity and steady pressure.

Saturday, September 19, 2026

Mid-Morning
Arrowhead Lake Weather - 2026-09-19 - Morning - Nearby Thunderstorms
51°F 11°C
Nearby Thunderstorms
Mid-Afternoon
Arrowhead Lake Weather - 2026-09-19 - Afternoon - Light Showers
60°F 16°C
Light Showers
Early-Evening
Arrowhead Lake Weather - 2026-09-19 - Evening - Light Showers
54°F 12°C
Light Showers
Comfortable at 60°F 16°C, heavy thunderstorms conditions at times, with steady humidity and steady pressure. Winds switching from the N to the NW at 7 mph 12 km/h.

Sunday, September 20, 2026

Mid-Morning
Arrowhead Lake Weather - 2026-09-20 - Morning - Sunny
52°F 11°C
Sunny
Mid-Afternoon
Arrowhead Lake Weather - 2026-09-20 - Afternoon - Sunny
68°F 20°C
Sunny
Early-Evening
Arrowhead Lake Weather - 2026-09-20 - Evening - Sunny
64°F 18°C
Sunny
Mild temperatures up to 68°F 20°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling.

Monday, September 21, 2026

Mid-Morning
Arrowhead Lake Weather - 2026-09-21 - Morning - Sunny
62°F 17°C
Sunny
Mid-Afternoon
Arrowhead Lake Weather - 2026-09-21 - Afternoon - Overcast
74°F 24°C
Overcast
Early-Evening
Arrowhead Lake Weather - 2026-09-21 - Evening - Overcast
67°F 20°C
Overcast
Mild with a high of 74°F 24°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and barometric pressure falling. Winds moving from the SSE to the SW at 7 mph 12 km/h.

Tuesday, September 22, 2026

Mid-Morning
Arrowhead Lake Weather - 2026-09-22 - Morning - Sunny
51°F 11°C
Sunny
Mid-Afternoon
Arrowhead Lake Weather - 2026-09-22 - Afternoon - Scattered Showers
57°F 14°C
Scattered Showers
Early-Evening
Arrowhead Lake Weather - 2026-09-22 - Evening - Scattered Showers
51°F 11°C
Scattered Showers
Cool and brisk at 57°F 14°C, locally heavy downpours at times, with lower humidity and barometric pressure rising. Winds swinging from the NW to the W at 11 mph 17 km/h.

Wednesday, September 23, 2026

Mid-Morning
Arrowhead Lake Weather - 2026-09-23 - Morning - Sunny
51°F 11°C
Sunny
Mid-Afternoon
Arrowhead Lake Weather - 2026-09-23 - Afternoon - Partly Cloudy
66°F 19°C
Partly Cloudy
Early-Evening
Arrowhead Lake Weather - 2026-09-23 - Evening - Sunny
62°F 17°C
Sunny
Comfortable at 66°F 19°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure.

Thursday, September 24, 2026

Mid-Morning
Arrowhead Lake Weather - 2026-09-24 - Morning - Sunny
58°F 14°C
Sunny
Mid-Afternoon
Arrowhead Lake Weather - 2026-09-24 - Afternoon - Sunny
73°F 23°C
Sunny
Early-Evening
Arrowhead Lake Weather - 2026-09-24 - Evening - Partly Cloudy
66°F 19°C
Partly Cloudy
Enjoyable around 73°F 23°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling. Winds shifting from the ENE to the S at 9 mph 14 km/h.

Friday, September 25, 2026

Mid-Morning
Arrowhead Lake Weather - 2026-09-25 - Morning - Partly Cloudy
67°F 19°C
Partly Cloudy
Mid-Afternoon
Arrowhead Lake Weather - 2026-09-25 - Afternoon - Sunny
85°F 29°C
Sunny
Early-Evening
Arrowhead Lake Weather - 2026-09-25 - Evening - Overcast
73°F 23°C
Overcast
Warm temperatures up to 85°F 29°C, cloudy in the morning, sunny in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling. Winds turning from the SSE to the SW at 8 mph 12 km/h.

Saturday, September 26, 2026

Mid-Morning
Arrowhead Lake Weather - 2026-09-26 - Morning - Overcast
69°F 21°C
Overcast
Mid-Afternoon
Arrowhead Lake Weather - 2026-09-26 - Afternoon - Overcast
81°F 27°C
Overcast
Early-Evening
Arrowhead Lake Weather - 2026-09-26 - Evening - Scattered Showers
72°F 22°C
Scattered Showers
Very warm with a high of 81°F 27°C, periods of heavy rain and gusty conditions, with steady humidity and barometric pressure falling. Winds switching from the SW to the WSW at 8 mph 13 km/h.

Sunday, September 27, 2026

Mid-Morning
Arrowhead Lake Weather - 2026-09-27 - Morning - Sunny
63°F 17°C
Sunny
Mid-Afternoon
Arrowhead Lake Weather - 2026-09-27 - Afternoon - Overcast
72°F 22°C
Overcast
Early-Evening
Arrowhead Lake Weather - 2026-09-27 - Evening - Light Showers
57°F 14°C
Light Showers
Pleasant near 72°F 22°C, mainly dry until evening showers arrive, with increasing humidity and steady pressure. Winds moving from the SW to the NNE at 8 mph 12 km/h.

Monday, September 28, 2026

Mid-Morning
Arrowhead Lake Weather - 2026-09-28 - Morning - Scattered Showers
49°F 9°C
Scattered Showers
Mid-Afternoon
Arrowhead Lake Weather - 2026-09-28 - Afternoon - Scattered Showers
44°F 7°C
Scattered Showers
Early-Evening
Arrowhead Lake Weather - 2026-09-28 - Evening - Scattered Showers
39°F 4°C
Scattered Showers
Cold with a high near 44°F 7°C, locally heavy downpours at times, with steady humidity and barometric pressure rising. Winds swinging from the N to the NW at 9 mph 14 km/h.

Tuesday, September 29, 2026

Mid-Morning
Arrowhead Lake Weather - 2026-09-29 - Morning - Light Fog
38°F 3°C
Light Fog
Mid-Afternoon
Arrowhead Lake Weather - 2026-09-29 - Afternoon - Scattered Showers
44°F 7°C
Scattered Showers
Early-Evening
Arrowhead Lake Weather - 2026-09-29 - Evening - Overcast
44°F 6°C
Overcast
Nippy around 44°F 7°C, periods of heavy rain and gusty conditions, with lower humidity and barometric pressure falling.

Wednesday, September 30, 2026

Mid-Morning
Arrowhead Lake Weather - 2026-09-30 - Morning - Overcast
42°F 5°C
Overcast
Mid-Afternoon
Arrowhead Lake Weather - 2026-09-30 - Afternoon - Scattered Showers
57°F 14°C
Scattered Showers
Early-Evening
Arrowhead Lake Weather - 2026-09-30 - Evening - Scattered Showers
52°F 11°C
Scattered Showers
Cool and brisk at 57°F 14°C, scattered downpours possible, with lower humidity and steady pressure. Winds shifting from the NNW to the S at 6 mph 10 km/h.

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Weather by the Numbers

Thu, 17th
Arrowhead Lake MT Weather - Thursday, Sep 17, 2026 - Overcast
Hi: 74°F 23°C
Lo: 48°F 9°C
Sunrise 06:58 AM
Sunset 07:24 PM
Wind SE 11 mph18 km/h
Dew Point 36°F2°C
uv Index 4
Barometric Pressure 30 in1016 mb
POP 9% *
Humidity 30%
Fri, 18th
Arrowhead Lake MT Weather - Friday, Sep 18, 2026 - Patchy Rain Nearby
Hi: 75°F 24°C
Lo: 58°F 14°C
Sunrise 06:59 AM
Sunset 07:22 PM
Wind NE 6 mph10 km/h
Dew Point 43°F6°C
uv Index 4
Barometric Pressure 29.94 in1014 mb
POP 4% *
Humidity 34%
Sat, 19th
Arrowhead Lake MT Weather - Saturday, Sep 19, 2026 - Thundery Outbreaks In Nearby
Hi: 61°F 16°C
Lo: 48°F 9°C
Sunrise 07:00 AM
Sunset 07:20 PM
Wind N 8 mph13 km/h
Dew Point 46°F8°C
uv Index 1
Barometric Pressure 30.03 in1017 mb
POP 22% *
Humidity 60%
Sun, 20th
Arrowhead Lake MT Weather - Sunday, Sep 20, 2026 - Sunny
Hi: 68°F 20°C
Lo: 48°F 9°C
Sunrise 07:02 AM
Sunset 07:18 PM
Wind ESE 7 mph11 km/h
Dew Point 40°F4°C
uv Index 4
Barometric Pressure 30 in1016 mb
POP 1% *
Humidity 40%
Mon, 21st
Arrowhead Lake MT Weather - Monday, Sep 21, 2026 - Cloudy
Hi: 74°F 24°C
Lo: 50°F 10°C
Sunrise 07:03 AM
Sunset 07:16 PM
Wind SE 9 mph14 km/h
Dew Point 34°F1°C
uv Index 5
Barometric Pressure 29.83 in1010 mb
POP 6% *
Humidity 26%
Tue, 22nd
Arrowhead Lake MT Weather - Tuesday, Sep 22, 2026 - Patchy Rain Nearby
Hi: 61°F 16°C
Lo: 45°F 7°C
Sunrise 07:04 AM
Sunset 07:14 PM
Wind NNW 17 mph27 km/h
Dew Point 26°F-3°C
uv Index 3
Barometric Pressure 30.06 in1018 mb
POP 17% *
Humidity 36%
Wed, 23rd
Arrowhead Lake MT Weather - Wednesday, Sep 23, 2026 - Sunny
Hi: 67°F 20°C
Lo: 44°F 6°C
Sunrise 07:05 AM
Sunset 07:12 PM
Wind E 5 mph8 km/h
Dew Point 21°F-6°C
uv Index 5
Barometric Pressure 30.12 in1020 mb
POP 1% *
Humidity 23%
Thu, 24th
Arrowhead Lake MT Weather - Thursday, Sep 24, 2026 - Sunny
Hi: 73°F 23°C
Lo: 51°F 11°C
Sunrise 07:07 AM
Sunset 07:10 PM
Wind ESE 9 mph14 km/h
Dew Point 29°F-2°C
uv Index 5
Barometric Pressure 30.18 in1022 mb
POP 1% *
Humidity 24%
Fri, 25th
Arrowhead Lake MT Weather - Friday, Sep 25, 2026 - Overcast
Hi: 85°F 29°C
Lo: 58°F 15°C
Sunrise 07:08 AM
Sunset 07:08 PM
Wind SE 9 mph14 km/h
Dew Point 31°F-1°C
uv Index 5
Barometric Pressure 29.83 in1010 mb
POP 8% *
Humidity 18%
Sat, 26th
Arrowhead Lake MT Weather - Saturday, Sep 26, 2026 - Sunny
Hi: 81°F 27°C
Lo: 63°F 17°C
Sunrise 07:09 AM
Sunset 07:06 PM
Wind SSE 8 mph12 km/h
Dew Point 40°F4°C
uv Index 7
Barometric Pressure 29.77 in1008 mb
POP 1% *
Humidity 26%
Sun, 27th
Arrowhead Lake MT Weather - Sunday, Sep 27, 2026 - Cloudy
Hi: 72°F 22°C
Lo: 49°F 10°C
Sunrise 07:10 AM
Sunset 07:04 PM
Wind WNW 4 mph7 km/h
Dew Point 32°F-0°C
uv Index 5
Barometric Pressure 29.77 in1008 mb
POP 6% *
Humidity 24%
Mon, 28th
Arrowhead Lake MT Weather - Monday, Sep 28, 2026 - Patchy Rain Nearby
Hi: 49°F 9°C
Lo: 39°F 4°C
Sunrise 07:12 AM
Sunset 07:03 PM
Wind N 11 mph18 km/h
Dew Point 41°F5°C
uv Index 2
Barometric Pressure 30.03 in1017 mb
POP 30% *
Humidity 81%
Tue, 29th
Arrowhead Lake MT Weather - Tuesday, Sep 29, 2026 - Patchy Rain Nearby
Hi: 44°F 7°C
Lo: 38°F 3°C
Sunrise 07:13 AM
Sunset 07:01 PM
Wind N 3 mph5 km/h
Dew Point 38°F3°C
uv Index 1
Barometric Pressure 30.18 in1022 mb
POP 32% *
Humidity 89%
Wed, 30th
Arrowhead Lake MT Weather - Wednesday, Sep 30, 2026 - Patchy Rain Nearby
Hi: 57°F 14°C
Lo: 40°F 5°C
Sunrise 07:14 AM
Sunset 06:59 PM
Wind N 6 mph10 km/h
Dew Point 39°F4°C
uv Index 2
Barometric Pressure 30 in1016 mb
POP 13% *
Humidity 65%
* POP = Probability of Precipitation. Data for 12:00 PM.