Weather forecast for 10 daysHappy Haven, MT
Weather forecast for the weekend
Sunday Oct 18, 2026
- 59°F
- 32°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 4mphNE 53°
- Humidity: 68%
- UV index: 3
- Sunrise: 8:02 am MDT
- Sunset: 6:42 pm MDT
- details ▼
Today, on Sunday, October 18, sunny conditions are expected to continue.
A high of a mild 59°F during the day contrasts markedly with a low of a wintry 32°F at night.
Today, the expected high of 59°F is expected to reflect September's average high of 65.5°F.
Sunrise will be at 8:02 am and sunset at 6:42 pm; the daylight will last for 10h and 40min.
A high of a mild 59°F during the day contrasts markedly with a low of a wintry 32°F at night.
Today, the expected high of 59°F is expected to reflect September's average high of 65.5°F.
Sunrise will be at 8:02 am and sunset at 6:42 pm; the daylight will last for 10h and 40min.
10-day overview
Daily temperatures
Warmest period: Tuesday - Thursday 63°C.
Coldest period: Sunday - Tuesday 43°C.
Coldest period: Sunday - Tuesday 43°C.
Chance of precipitation
Highest chance: Friday 41%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 59°F
- 32°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 4mphNE 53°
- Humidity: 68%
- UV index: 3
- Sunrise: 8:02 am MDT
- Sunset: 6:42 pm MDT
- details ▼
- Monday
- Oct 19, 2026
- 61°F
- 34°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 2mphENE 71°
- Humidity: 61%
- UV index: 2
- Sunrise: 8:03 am MDT
- Sunset: 6:40 pm MDT
- details ▼
- Tuesday
- Oct 20, 2026
- 63°F
- 34°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 3mphENE 76°
- Humidity: 63%
- UV index: 2
- Sunrise: 8:05 am MDT
- Sunset: 6:38 pm MDT
- details ▼
- Wednesday
- Oct 21, 2026
- 63°F
- 37°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 4mphE 97°
- Humidity: 61%
- UV index: 2
- Sunrise: 8:06 am MDT
- Sunset: 6:37 pm MDT
- details ▼
- Thursday
- Oct 22, 2026
- 63°F
- 39°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0.12"
- Wind: 5mphE 84°
- Humidity: 64%
- UV index: 2
- Sunrise: 8:08 am MDT
- Sunset: 6:35 pm MDT
- details ▼
- Friday
- Oct 23, 2026
- 50°F
- 28°F
AM Showers
- Precip. probability: 41%
- Precipitation: 0.08"
- Wind: 7mphW 272°
- Humidity: 81%
- UV index: 1
- Sunrise: 8:09 am MDT
- Sunset: 6:33 pm MDT
- details ▼
- Saturday
- Oct 24, 2026
- 45°F
- 27°F
Partly Cloudy
- Precip. probability: 13%
- Precipitation: 0.08"
- Wind: 6mphESE 115°
- Humidity: 73%
- UV index: 2
- Sunrise: 8:11 am MDT
- Sunset: 6:31 pm MDT
- details ▼
- Sunday
- Oct 25, 2026
- 43°F
- 25°F
AM Snow Showers
- Precip. probability: 35%
- Precipitation: 0.08"
- Wind: 8mphNE 50°
- Humidity: 76%
- UV index: 2
- Sunrise: 8:12 am MDT
- Sunset: 6:29 pm MDT
- details ▼
- Monday
- Oct 26, 2026
- 43°F
- 25°F
Partly Cloudy
- Precip. probability: 22%
- Precipitation: 0"
- Wind: 6mphNE 53°
- Humidity: 75%
- UV index: 2
- Sunrise: 8:14 am MDT
- Sunset: 6:28 pm MDT
- details ▼
- Tuesday
- Oct 27, 2026
- 43°F
- 25°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 6mphE 81°
- Humidity: 84%
- UV index: 2
- Sunrise: 8:15 am MDT
- Sunset: 6:26 pm MDT
- details ▼
The next ten days will bring unstable conditions, and a combination of primarily cloud-filled and occasionally mostly clear, wet and snow-filled weather is forecasted.
Rainfall is anticipated on Thursday through Saturday.
With a probability of 35%, snowfall is expected only on next Sunday. The precipitation will be light at 0.12".
Temperature fluctuation will be noticeable over the next several days. The temperature is expected to swing from 42.8°F up to 62.6°F, while there will be also a marked difference in overnight low temperatures, as the minimum temperature is expected to range between 24.8°F and 39.2°F.
Tuesday through Thursday, with the highest temperature of 62.6°F, will be the warmest days; the coldest days will be next Sunday through next Tuesday, with a maximum of 42.8°F.
Rainfall is anticipated on Thursday through Saturday.
With a probability of 35%, snowfall is expected only on next Sunday. The precipitation will be light at 0.12".
Temperature fluctuation will be noticeable over the next several days. The temperature is expected to swing from 42.8°F up to 62.6°F, while there will be also a marked difference in overnight low temperatures, as the minimum temperature is expected to range between 24.8°F and 39.2°F.
Tuesday through Thursday, with the highest temperature of 62.6°F, will be the warmest days; the coldest days will be next Sunday through next Tuesday, with a maximum of 42.8°F.
Updated: Oct 18, 2026 @ 09:24:33 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Today, in Happy Haven, sunshine is expected with little to no cloud cover.
Today, the highest temperature will be 59°F, while the lowest temperature will be 32°F.
The maximum temperature today will be notably higher than the average highest temperature of 48.4°F in October. The lowest temperature will be in line with the average low of 30.7°F.
The maximum temperature today will be notably higher than the average highest temperature of 48.4°F in October. The lowest temperature will be in line with the average low of 30.7°F.
On Sunday, in Happy Haven, sunrise will be at 8:02 am and sunset at 6:42 pm (MDT).
In Happy Haven, today, there will be 10h and 40min of daylight.
