Weather forecast for 10 daysSaint Johns, MT
Weather forecast for the weekend
Sunday Oct 18, 2026
- 61°F
- 36°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 10mphE 89°
- Humidity: 44%
- UV index: 3
- Sunrise: 7:45 am MDT
- Sunset: 6:24 pm MDT
- details ▼
Tomorrow, in Saint Johns, sunny conditions are also expected to continue.
The maximum temperature will be an enjoyable 60.8°F, while the minimum temperature will be a cold 35.6°F.
Tomorrow's maximum temperature is forecasted to be moderately higher than the usual 54.3°F high in October.
Sunrise will be at 7:45 am and sunset at 6:24 pm; tomorrow's daylight will last for 10h and 40min.
The maximum temperature will be an enjoyable 60.8°F, while the minimum temperature will be a cold 35.6°F.
Tomorrow's maximum temperature is forecasted to be moderately higher than the usual 54.3°F high in October.
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: Thursday 66°C.
Coldest day: Sunday 25.10. 41°C.
Coldest day: Sunday 25.10. 41°C.
Chance of precipitation
Highest chance: Friday 36%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 34°F
Mostly Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 14mphNW 312°
- Humidity: 55%
- UV index: 0
- Sunrise: 7:43 am MDT
- Sunset: 6:26 pm MDT
- details ▼
- Sunday
- Oct 18, 2026
- 61°F
- 36°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 10mphE 89°
- Humidity: 44%
- UV index: 3
- Sunrise: 7:45 am MDT
- Sunset: 6:24 pm MDT
- details ▼
- Monday
- Oct 19, 2026
- 63°F
- 36°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 7mphSE 127°
- Humidity: 53%
- UV index: 2
- Sunrise: 7:46 am MDT
- Sunset: 6:22 pm MDT
- details ▼
- Tuesday
- Oct 20, 2026
- 61°F
- 30°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 8mphNNW 331°
- Humidity: 56%
- 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: 62%
- UV index: 2
- Sunrise: 7:50 am MDT
- Sunset: 6:19 pm MDT
- details ▼
- Thursday
- Oct 22, 2026
- 66°F
- 41°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 9mphSSW 202°
- Humidity: 62%
- UV index: 2
- Sunrise: 7:51 am MDT
- Sunset: 6:17 pm MDT
- details ▼
- Friday
- Oct 23, 2026
- 50°F
- 32°F
Showers
- Precip. probability: 36%
- Precipitation: 0.12"
- Wind: 16mphNW 310°
- Humidity: 74%
- UV index: 2
- Sunrise: 7:53 am MDT
- Sunset: 6:15 pm MDT
- details ▼
- Saturday
- Oct 24, 2026
- 45°F
- 27°F
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 14mphWNW 292°
- Humidity: 62%
- UV index: 2
- Sunrise: 7:54 am MDT
- Sunset: 6:13 pm MDT
- details ▼
- Sunday
- Oct 25, 2026
- 41°F
- 28°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 13mphNE 41°
- Humidity: 72%
- UV index: 2
- Sunrise: 7:56 am MDT
- Sunset: 6:11 pm MDT
- details ▼
- Monday
- Oct 26, 2026
- 43°F
- 27°F
Mostly Sunny
- Precip. probability: 13%
- Precipitation: 0"
- Wind: 10mphESE 121°
- Humidity: 67%
- UV index: 2
- Sunrise: 7:57 am MDT
- Sunset: 6:10 pm MDT
- details ▼
Looking ahead, conditions suggest a period of cloudy, mostly clear and wet weather is forecasted.
With a 36% probability, rainfall is forecasted only for Friday. The precipitation will be minimal at 0.12".
Substantial differences in temperature are forecasted over the next several days. The maximum temperature will vary between 41°F and 66.2°F, while there will be also a marked difference in overnight low temperatures, as temperatures overnight will fluctuate from 26.6°F up to 41°F.
With the highest temperature of 66.2°F, Thursday will be the warmest day; next Sunday will be the coldest day, with the highest temperature of 41°F.
With a 36% probability, rainfall is forecasted only for Friday. The precipitation will be minimal at 0.12".
Substantial differences in temperature are forecasted over the next several days. The maximum temperature will vary between 41°F and 66.2°F, while there will be also a marked difference in overnight low temperatures, as temperatures overnight will fluctuate from 26.6°F up to 41°F.
With the highest temperature of 66.2°F, Thursday will be the warmest day; next Sunday will be the coldest day, with the highest temperature of 41°F.
Updated: Oct 18, 2026 @ 03:23:16 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
Tomorrow, clear skies and sunshine are anticipated.
Tomorrow, the maximum temperature will be 60.8°F, while the minimum temperature will be 35.6°F.
Tomorrow, the maximum temperature will be moderately higher than the average highest temperature in October. The lowest temperature will be in line with the average low of 38.8°F.
Tomorrow, the maximum temperature will be moderately higher than the average highest temperature in October. The lowest temperature will be in line with the average low of 38.8°F.
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.
