Live Weather & Forecast
Weather in Boulder
Montana, United States · Real-time conditions & 3-day outlook
9°C
Feels like 7°C
48°F / Feels 44°F
Thundery outbreaks in nearby
Boulder, Montana
🌞 Daytime
Updated: 2026-04-13 15:15
Humidity
46%
Wind
17.6 km/h W
Wind Gust
20.3 km/h
Pressure
1005 mb
Visibility
10 km
UV Index
3.4
(Moderate)
Precipitation
0 mm
Cloud Cover
100%
Dew Point
-1.8°C
Wind Degree
277°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
153.9 μg/m³
NO₂
2.9 μg/m³
O₃
77 μg/m³
SO₂
1 μg/m³
PM 2.5
1.2 μg/m³
PM 10
1.3 μg/m³
Today's Hourly Forecast
24-hour breakdown for Boulder, Montana
12 AM
-0°
Partly Cloudy
1 AM
-1°
Overcast
2 AM
-2°
Thundery outbreaks in nearby
3 AM
-2°
Clear
4 AM
-2°
Partly Cloudy
5 AM
-2°
Cloudy
6 AM
-2°
Overcast
7 AM
-1°
Overcast
8 AM
1°
Overcast
9 AM
3°
Cloudy
10 AM
5°
Partly Cloudy
11 AM
6°
Cloudy
12 PM
7°
Thundery outbreaks in nearby
1 PM
8°
Thundery outbreaks in nearby
2 PM
9°
Thundery outbreaks in nearby
3 PM
9°
Thundery outbreaks in nearby
4 PM
9°
Thundery outbreaks in nearby
5 PM
9°
Thundery outbreaks in nearby
6 PM
8°
Thundery outbreaks in nearby
7 PM
5°
Thundery outbreaks in nearby
8 PM
2°
Thundery outbreaks in nearby
9 PM
1°
Cloudy
10 PM
-1°
Partly Cloudy
11 PM
-2°
Clear
3-Day Forecast
Daily overview for Boulder, Montana
Today
Thundery outbreaks in nearby
10°
/
-3°
🌧️ 0% chance of rain
💧 Avg. humidity: 66%
💨 Max wind: 22.3 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.1
🌅 Sunrise: 06:45 AM
🌇 Sunset: 08:13 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Partly Cloudy
10°
/
-4°
🌧️ 0% chance of rain
💧 Avg. humidity: 61%
💨 Max wind: 23.4 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:43 AM
🌇 Sunset: 08:15 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Wed, Apr 15
Moderate rain
10°
/
-6°
🌧️ 87% chance of rain
❄️ 6% chance of snow
💧 Avg. humidity: 62%
💨 Max wind: 22 km/h
🌧️ Total precip: 6.86 mm
☀️ UV Index: 0.9
🌅 Sunrise: 06:41 AM
🌇 Sunset: 08:16 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Best Time to Visit Boulder
Plan your trip to Boulder, United States around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Boulder?
Current conditions in Boulder: Thundery outbreaks in nearby, temperature 9°C, humidity 46%.
What is the best time to visit Boulder?
The best time to visit Boulder is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Boulder?
Boulder is located at approximately 46.2° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Boulder?
The wettest period in Boulder is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Boulder?
For visits to Boulder during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Boulder in?
Boulder is located in United States, in the state of Montana.
What are the public holidays in Boulder in 2026?
View the 2026 public holidays for Boulder on our Holidays page.
What are the GPS coordinates used for the weather forecast in Boulder?
The weather forecast for Boulder uses coordinates 46.2366, -112.1208.