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Boulder, MT Weather - 14-Day Weather Forecast

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Boulder MT Weather - Clear - 68°F
Clear
68°F
Updated 5:41 pm
Feels Like 58°F
Humidity 43%
Wind N 8 mph
Barometer  29.98 in
Dew Point 45°F
Boulder MT Weather - Clear - 20°C
Clear
20°C
Updated 5:41 pm
Feels Like 15°C
Humidity 43%
Wind N 13 km/h
Barometer  101.5 kPa
Dew Point 7°C
Boulder, MT Weather and Current Conditionsboulder mt weather forecast

Boulder, MT Weather Forecast

Boulder Montana WeatherBoulder, Montana Weather Weather Forecast
Here is the API 14 day weather forecast for Boulder, Montana. Note: The 7-day weather forecast for Boulder, 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.
Boulder, MT Weather Forecast Dated: 541 PM Sat Sep 12 2026
Expect a cool pattern with plenty of sunshine and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.

Saturday, September 12, 2026

Mid-Morning
Boulder Weather - 2026-09-12 - Morning - Overcast
46°F 8°C
Overcast
Mid-Afternoon
Boulder Weather - 2026-09-12 - Afternoon - Overcast
66°F 19°C
Overcast
Early-Evening
Boulder Weather - 2026-09-12 - Evening - Overcast
56°F 13°C
Overcast
Refreshing around 66°F 19°C, overcast throughout the day, with lower humidity and barometric pressure falling.

Sunday, September 13, 2026

Mid-Morning
Boulder Weather - 2026-09-13 - Morning - Sunny
49°F 9°C
Sunny
Mid-Afternoon
Boulder Weather - 2026-09-13 - Afternoon - Cloudy
72°F 22°C
Cloudy
Early-Evening
Boulder Weather - 2026-09-13 - Evening - Sunny
55°F 13°C
Sunny
Comfortable with temperatures reaching 72°F 22°C, sunny in the morning, cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure. Winds turning from the SE to the NNW at 11 mph 18 km/h.

Monday, September 14, 2026

Mid-Morning
Boulder Weather - 2026-09-14 - Morning - Cloudy
44°F 7°C
Cloudy
Mid-Afternoon
Boulder Weather - 2026-09-14 - Afternoon - Overcast
57°F 14°C
Overcast
Early-Evening
Boulder Weather - 2026-09-14 - Evening - Sunny
49°F 9°C
Sunny
Chilly near 57°F 14°C, overcast through the afternoon, turning sunny this evening, with steady humidity and steady pressure. Winds switching from the WSW to the NNW at 9 mph 14 km/h.

Tuesday, September 15, 2026

Mid-Morning
Boulder Weather - 2026-09-15 - Morning - Overcast
45°F 7°C
Overcast
Mid-Afternoon
Boulder Weather - 2026-09-15 - Afternoon - Overcast
61°F 16°C
Overcast
Early-Evening
Boulder Weather - 2026-09-15 - Evening - Overcast
56°F 13°C
Overcast
Cool with a high near 61°F 16°C, overcast throughout the day, with lower humidity and barometric pressure falling.

Wednesday, September 16, 2026

Mid-Morning
Boulder Weather - 2026-09-16 - Morning - Light Showers
42°F 5°C
Light Showers
Mid-Afternoon
Boulder Weather - 2026-09-16 - Afternoon - Partly Cloudy
66°F 19°C
Partly Cloudy
Early-Evening
Boulder Weather - 2026-09-16 - Evening - Partly Cloudy
59°F 15°C
Partly Cloudy
Refreshing around 66°F 19°C, scattered morning showers before drying out later, with lower humidity and steady pressure. Winds SE at 6 mph 9 km/h.

Thursday, September 17, 2026

Mid-Morning
Boulder Weather - 2026-09-17 - Morning - Sunny
56°F 13°C
Sunny
Mid-Afternoon
Boulder Weather - 2026-09-17 - Afternoon - Sunny
74°F 23°C
Sunny
Early-Evening
Boulder Weather - 2026-09-17 - Evening - Sunny
64°F 17°C
Sunny
Pleasant near 74°F 23°C, sunny throughout the day, with lower humidity and steady pressure.

Friday, September 18, 2026

Mid-Morning
Boulder Weather - 2026-09-18 - Morning - Sunny
57°F 14°C
Sunny
Mid-Afternoon
Boulder Weather - 2026-09-18 - Afternoon - Sunny
77°F 25°C
Sunny
Early-Evening
Boulder Weather - 2026-09-18 - Evening - Sunny
65°F 19°C
Sunny
Comfortable with temperatures reaching 77°F 25°C, sunny throughout the day, with lower humidity and barometric pressure falling.

Saturday, September 19, 2026

Mid-Morning
Boulder Weather - 2026-09-19 - Morning - Sunny
59°F 15°C
Sunny
Mid-Afternoon
Boulder Weather - 2026-09-19 - Afternoon - Sunny
79°F 26°C
Sunny
Early-Evening
Boulder Weather - 2026-09-19 - Evening - Sunny
69°F 21°C
Sunny
Enjoyable around 79°F 26°C, sunny throughout the day, with lower humidity and barometric pressure falling.

Sunday, September 20, 2026

Mid-Morning
Boulder Weather - 2026-09-20 - Morning - Overcast
61°F 16°C
Overcast
Mid-Afternoon
Boulder Weather - 2026-09-20 - Afternoon - Cloudy
80°F 27°C
Cloudy
Early-Evening
Boulder Weather - 2026-09-20 - Evening - Overcast
72°F 22°C
Overcast
Warm temperatures up to 80°F 27°C, overcast throughout the day, with steady humidity and barometric pressure falling.

Monday, September 21, 2026

Mid-Morning
Boulder Weather - 2026-09-21 - Morning - Cloudy
59°F 15°C
Cloudy
Mid-Afternoon
Boulder Weather - 2026-09-21 - Afternoon - Nearby Thunderstorms
69°F 21°C
Nearby Thunderstorms
Early-Evening
Boulder Weather - 2026-09-21 - Evening - Heavy Thunderstorms
54°F 13°C
Heavy Thunderstorms
Mild with a high of 69°F 21°C, periods of heavy thunderstorms, with increasing humidity and steady pressure. Winds swinging from the N to the NNE at 5 mph 7 km/h.

Tuesday, September 22, 2026

Mid-Morning
Boulder Weather - 2026-09-22 - Morning - Sunny
52°F 11°C
Sunny
Mid-Afternoon
Boulder Weather - 2026-09-22 - Afternoon - Sunny
71°F 22°C
Sunny
Early-Evening
Boulder Weather - 2026-09-22 - Evening - Sunny
61°F 16°C
Sunny
Pleasant near 71°F 22°C, sunny throughout the day, with lower humidity and steady pressure.

Wednesday, September 23, 2026

Mid-Morning
Boulder Weather - 2026-09-23 - Morning - Sunny
53°F 12°C
Sunny
Mid-Afternoon
Boulder Weather - 2026-09-23 - Afternoon - Sunny
72°F 22°C
Sunny
Early-Evening
Boulder Weather - 2026-09-23 - Evening - Sunny
65°F 18°C
Sunny
Comfortable with temperatures reaching 72°F 22°C, sunny throughout the day, with lower humidity and barometric pressure falling.

Thursday, September 24, 2026

Mid-Morning
Boulder Weather - 2026-09-24 - Morning - Sunny
62°F 16°C
Sunny
Mid-Afternoon
Boulder Weather - 2026-09-24 - Afternoon - Sunny
79°F 26°C
Sunny
Early-Evening
Boulder Weather - 2026-09-24 - Evening - Cloudy
62°F 17°C
Cloudy
Enjoyable around 79°F 26°C, sunny through the afternoon, turning cloudy this evening, with increasing humidity and steady pressure. Winds building from SW at 3 mph 5 km/h to NNW at 13 mph 20 km/h. Gusts up to 22 mph 35 km/h.

Friday, September 25, 2026

Mid-Morning
Boulder Weather - 2026-09-25 - Morning - Light Showers
38°F 3°C
Light Showers
Mid-Afternoon
Boulder Weather - 2026-09-25 - Afternoon - Overcast
41°F 5°C
Overcast
Early-Evening
Boulder Weather - 2026-09-25 - Evening - Overcast
42°F 5°C
Overcast
Biting cold near 41°F 5°C, scattered morning showers before drying out later, with steady humidity and steady pressure.

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Weather by the Numbers

Sat, 12th
Boulder MT Weather - Saturday, Sep 12, 2026 - Overcast
Hi: 67°F 19°C
Lo: 39°F 4°C
Sunrise 07:03 AM
Sunset 07:46 PM
Wind SSE 5 mph8 km/h
Dew Point 37°F3°C
uv Index 4
Barometric Pressure 29.97 in1015 mb
POP 12% *
Humidity 50%
Sun, 13th
Boulder MT Weather - Sunday, Sep 13, 2026 - Partly Cloudy
Hi: 72°F 22°C
Lo: 40°F 5°C
Sunrise 07:04 AM
Sunset 07:44 PM
Wind SSE 7 mph12 km/h
Dew Point 32°F-0°C
uv Index 5
Barometric Pressure 29.77 in1008 mb
POP 3% *
Humidity 36%
Mon, 14th
Boulder MT Weather - Monday, Sep 14, 2026 - Cloudy
Hi: 57°F 14°C
Lo: 38°F 3°C
Sunrise 07:06 AM
Sunset 07:42 PM
Wind W 14 mph22 km/h
Dew Point 29°F-2°C
uv Index 4
Barometric Pressure 29.94 in1014 mb
POP 7% *
Humidity 39%
Tue, 15th
Boulder MT Weather - Tuesday, Sep 15, 2026 - Overcast
Hi: 62°F 17°C
Lo: 37°F 3°C
Sunrise 07:07 AM
Sunset 07:40 PM
Wind SSE 4 mph7 km/h
Dew Point 30°F-1°C
uv Index 4
Barometric Pressure 29.94 in1014 mb
POP 10% *
Humidity 40%
Wed, 16th
Boulder MT Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 66°F 19°C
Lo: 38°F 3°C
Sunrise 07:08 AM
Sunset 07:38 PM
Wind SSE 3 mph5 km/h
Dew Point 37°F3°C
uv Index 4
Barometric Pressure 30.12 in1020 mb
POP 1% *
Humidity 42%
Thu, 17th
Boulder MT Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 74°F 23°C
Lo: 47°F 8°C
Sunrise 07:09 AM
Sunset 07:36 PM
Wind SE 3 mph4 km/h
Dew Point 32°F0°C
uv Index 6
Barometric Pressure 30.12 in1020 mb
POP 0% *
Humidity 26%
Fri, 18th
Boulder MT Weather - Friday, Sep 18, 2026 - Sunny
Hi: 77°F 25°C
Lo: 48°F 9°C
Sunrise 07:11 AM
Sunset 07:34 PM
Wind SSE 3 mph5 km/h
Dew Point 31°F-1°C
uv Index 6
Barometric Pressure 30.12 in1020 mb
POP 0% *
Humidity 23%
Sat, 19th
Boulder MT Weather - Saturday, Sep 19, 2026 - Sunny
Hi: 79°F 26°C
Lo: 50°F 10°C
Sunrise 07:12 AM
Sunset 07:32 PM
Wind SSE 5 mph9 km/h
Dew Point 29°F-2°C
uv Index 6
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 20%
Sun, 20th
Boulder MT Weather - Sunday, Sep 20, 2026 - Overcast
Hi: 80°F 27°C
Lo: 53°F 12°C
Sunrise 07:13 AM
Sunset 07:30 PM
Wind SSE 6 mph9 km/h
Dew Point 25°F-4°C
uv Index 5
Barometric Pressure 29.88 in1012 mb
POP 9% *
Humidity 16%
Mon, 21st
Boulder MT Weather - Monday, Sep 21, 2026 - Sunny
Hi: 69°F 21°C
Lo: 52°F 11°C
Sunrise 07:14 AM
Sunset 07:28 PM
Wind N 7 mph12 km/h
Dew Point 37°F3°C
uv Index 5
Barometric Pressure 29.91 in1013 mb
POP 1% *
Humidity 35%
Tue, 22nd
Boulder MT Weather - Tuesday, Sep 22, 2026 - Sunny
Hi: 71°F 22°C
Lo: 46°F 8°C
Sunrise 07:16 AM
Sunset 07:26 PM
Wind WSW 1 mph1 km/h
Dew Point 42°F5°C
uv Index 5
Barometric Pressure 29.97 in1015 mb
POP 1% *
Humidity 42%
Wed, 23rd
Boulder MT Weather - Wednesday, Sep 23, 2026 - Sunny
Hi: 72°F 22°C
Lo: 46°F 8°C
Sunrise 07:17 AM
Sunset 07:24 PM
Wind SE 5 mph8 km/h
Dew Point 35°F1°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 32%
Thu, 24th
Boulder MT Weather - Thursday, Sep 24, 2026 - Sunny
Hi: 79°F 26°C
Lo: 42°F 5°C
Sunrise 07:18 AM
Sunset 07:22 PM
Wind W 13 mph20 km/h
Dew Point 24°F-4°C
uv Index 6
Barometric Pressure 29.71 in1006 mb
POP 0% *
Humidity 14%
Fri, 25th
Boulder MT Weather - Friday, Sep 25, 2026 - Light Rain Shower
Hi: 42°F 5°C
Lo: 37°F 3°C
Sunrise 07:20 AM
Sunset 07:20 PM
Wind N 5 mph8 km/h
Dew Point 35°F2°C
uv Index 1
Barometric Pressure 30.3 in1026 mb
POP 67% *
Humidity 88%
* POP = Probability of Precipitation. Data for 12:00 PM.