Weather forecast for 10 daysSaint Johns, MT
Weather forecast for the weekend
Saturday Oct 17, 2026
- 73°F
- 34°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 19mphWSW 242°
- Humidity: 26%
- UV index: 3
- Sunrise: 7:43 am MDT
- Sunset: 6:26 pm MDT
- details ▼
Today, on Saturday, October 17, moderate cloud cover will mix with sunshine throughout the day.
Considerable temperature fluctuations from a high of a moderately hot 73.4°F to a low of an icy 33.8°F are anticipated.
Today, the temperature will be higher and more consistent with September's typical high of 70.5°F than with October's 54.3°F.
Sunrise was at 7:43 am and sunset will be at 6:26 pm; the daylight will last for 10h and 43min.
Considerable temperature fluctuations from a high of a moderately hot 73.4°F to a low of an icy 33.8°F are anticipated.
Today, the temperature will be higher and more consistent with September's typical high of 70.5°F than with October's 54.3°F.
Sunrise was at 7:43 am and sunset will be at 6:26 pm; the daylight will last for 10h and 43min.
Sunday Oct 18, 2026
- 59°F
- 34°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 9mphE 91°
- Humidity: 44%
- UV index: 3
- Sunrise: 7:45 am MDT
- Sunset: 6:24 pm MDT
- details ▼
Tomorrow, on Sunday, October 18, uninterrupted sunshine is also anticipated.
The temperature is forecasted to oscillate between a maximum of a refreshing 59°F and a minimum of a wintry 33.8°F.
Tomorrow's peak is anticipated to be slightly warmer than the regular high for October at 54.3°F.
Sunrise will be at 7:45 am and sunset at 6:24 pm; tomorrow's daylight will last for 10h and 40min.
The temperature is forecasted to oscillate between a maximum of a refreshing 59°F and a minimum of a wintry 33.8°F.
Tomorrow's peak is anticipated to be slightly warmer than the regular high for October at 54.3°F.
Sunrise will be at 7:45 am and sunset at 6:24 pm; tomorrow's daylight will last for 10h and 40min.
10-day overview
Daily temperatures
Warmest day: today 73°C.
Coldest period: Sunday - Monday 45°C.
Coldest period: Sunday - Monday 45°C.
Chance of precipitation
Highest chance: Friday 49%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- 73°F
- 34°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 19mphWSW 242°
- Humidity: 26%
- UV index: 3
- Sunrise: 7:43 am MDT
- Sunset: 6:26 pm MDT
- details ▼
- Sunday
- Oct 18, 2026
- 59°F
- 34°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 9mphE 91°
- Humidity: 44%
- UV index: 3
- Sunrise: 7:45 am MDT
- Sunset: 6:24 pm MDT
- details ▼
- Monday
- Oct 19, 2026
- 63°F
- 34°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 7mphESE 112°
- Humidity: 55%
- UV index: 2
- Sunrise: 7:46 am MDT
- Sunset: 6:22 pm MDT
- details ▼
- Tuesday
- Oct 20, 2026
- 59°F
- 30°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 9mphNW 319°
- Humidity: 57%
- UV index: 2
- Sunrise: 7:48 am MDT
- Sunset: 6:20 pm MDT
- details ▼
- Wednesday
- Oct 21, 2026
- 63°F
- 37°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 7mphSE 143°
- Humidity: 60%
- UV index: 2
- Sunrise: 7:50 am MDT
- Sunset: 6:19 pm MDT
- details ▼
- Thursday
- Oct 22, 2026
- 64°F
- 41°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0.04"
- Wind: 8mphSSW 202°
- Humidity: 61%
- UV index: 2
- Sunrise: 7:51 am MDT
- Sunset: 6:17 pm MDT
- details ▼
- Friday
- Oct 23, 2026
- 55°F
- 32°F
Showers
- Precip. probability: 49%
- Precipitation: 0.08"
- Wind: 18mphWNW 289°
- Humidity: 68%
- UV index: 1
- Sunrise: 7:53 am MDT
- Sunset: 6:15 pm MDT
- details ▼
- Saturday
- Oct 24, 2026
- 46°F
- 27°F
Partly Cloudy
- Precip. probability: 19%
- Precipitation: 0"
- Wind: 16mphW 278°
- Humidity: 63%
- UV index: 2
- Sunrise: 7:54 am MDT
- Sunset: 6:13 pm MDT
- details ▼
- Sunday
- Oct 25, 2026
- 45°F
- 27°F
Mostly Cloudy
- Precip. probability: 20%
- Precipitation: 0"
- Wind: 11mphENE 60°
- Humidity: 68%
- UV index: 2
- Sunrise: 7:56 am MDT
- Sunset: 6:11 pm MDT
- details ▼
- Monday
- Oct 26, 2026
- 45°F
- 28°F
Partly Cloudy
- Precip. probability: 12%
- Precipitation: 0"
- Wind: 10mphSSE 149°
- Humidity: 72%
- UV index: 2
- Sunrise: 7:57 am MDT
- Sunset: 6:10 pm MDT
- details ▼
For the next ten days, a combination of primarily gloomy and occasionally sun-filled and wet weather is anticipated.
With a probability of 49%, rainfall is anticipated only on Friday. The precipitation will be minimal at 0.08".
Temperature fluctuation will be noticeable over the next several days. The temperature is expected to swing from 44.6°F up to 73.4°F, while the nightly low temperatures will show also a considerable swing, as the overnight lows will vary from 26.6°F to 41°F.
With a high of 73.4°F, today is the warmest day; next Sunday and Monday, with the highest temperature of 44.6°F, will be the coldest days.
With a probability of 49%, rainfall is anticipated only on Friday. The precipitation will be minimal at 0.08".
Temperature fluctuation will be noticeable over the next several days. The temperature is expected to swing from 44.6°F up to 73.4°F, while the nightly low temperatures will show also a considerable swing, as the overnight lows will vary from 26.6°F to 41°F.
With a high of 73.4°F, today is the warmest day; next Sunday and Monday, with the highest temperature of 44.6°F, will be the coldest days.
Updated: Oct 17, 2026 @ 17:16:04 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 Saint Johns, some passing clouds may drift through, but the sun will shine at times.
Today, the highest temperature in Saint Johns will be 73.4°F, while the lowest temperature will be 33.8°F.
Today, the maximum temperature will be notably higher than the average highest temperature of 54.3°F in October. Today, the lowest temperature will be relatively lower than the average low temperature.
Today, the maximum temperature will be notably higher than the average highest temperature of 54.3°F in October. Today, the lowest temperature will be relatively lower than the average low temperature.
On Saturday, in Saint Johns, sunrise was at 7:43 am and sunset will be at 6:26 pm (MDT).
In Saint Johns, the length of the day today will be 10h and 43min.
Tomorrow, sunshine is forecasted under mostly clear skies.
Tomorrow, the highest temperature will be 59°F, while the lowest temperature will be 33.8°F.
The highest temperature tomorrow will be moderately higher than the average maximum temperature in October. Tomorrow, the lowest temperature will be also moderately lower than the average low temperature.
The highest temperature tomorrow will be moderately higher than the average maximum temperature in October. Tomorrow, the lowest temperature will be also moderately lower than the average low temperature.
On Sunday, in Saint Johns, sunrise will be at 7:45 am and sunset at 6:24 pm (MDT).
Tomorrow, the daylight will last for 10h and 40min.
