Weather forecast for tomorrowHelena, MT
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 63°F
- 36°F
Mostly Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 5mphN 358°
- Humidity: 57%
- UV index: 3
- Sunrise: 7:50 am MDT
- Sunset: 6:36 pm MDT
- details ▼
Tomorrow, on Sunday, a crisp, sunny atmosphere is likely.
A wide temperature range is predicted, from a high of an enjoyable 62.6°F to a low of a cold 35.6°F.
The expected high of 62.6°F appears seasonally off, better matching September's typical values.
Sunrise will be at 7:50 am and sunset at 6:36 pm; tomorrow's daylight will last for 10h and 46min.
A wide temperature range is predicted, from a high of an enjoyable 62.6°F to a low of a cold 35.6°F.
The expected high of 62.6°F appears seasonally off, better matching September's typical values.
Sunrise will be at 7:50 am and sunset at 6:36 pm; tomorrow's daylight will last for 10h and 46min.
Hourly overview
Hourly temperatures
Warmest period: 3 pm - 6 pm 59°C.
Coldest period: 6 am - 9 am 43°C.
Coldest period: 6 am - 9 am 43°C.
Chance of precipitation
Highest chance: 6 am - 9 am 4%.
Hourly weather forecast
- 12 am
- 48°F
- Feels like:48°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphWSW 241°
- Humidity: 52%
- Pressure: 30.03"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 46°F
- Feels like:46°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 2mphWSW 249°
- Humidity: 60%
- Pressure: 30.06"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 43°F
- Feels like:43°F
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 3mphWSW 251°
- Humidity: 65%
- Pressure: 30.09"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 43°F
- Feels like:43°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 2mphWSW 246°
- Humidity: 70%
- Pressure: 30.12"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:50 am
- 8 am
- 39°F
- Feels like:39°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 2mphWSW 249°
- Humidity: 77%
- Pressure: 30.12"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 45°F
- Feels like:45°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 1mphWNW 301°
- Humidity: 69%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 12 pm
- 52°F
- Feels like:52°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphNNE 27°
- Humidity: 55%
- Pressure: 30.09"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 2 pm
- 57°F
- Feels like:57°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphENE 74°
- Humidity: 48%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 61°F
- Feels like:61°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphE 90°
- Humidity: 41%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 59°F
- Feels like:59°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphW 270°
- Humidity: 47%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:36 pm
- 8 pm
- 52°F
- Feels like:52°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphWSW 253°
- Humidity: 55%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 48°F
- Feels like:48°F
Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 2mphWSW 247°
- Humidity: 63%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Sunday, primarily dull and occasionally mostly clear weather is anticipated.
The temperature will vary between a minimum of 39.2°F and a maximum of 60.8°F. The warmest part of the day will be at 4 pm and 5 pm.
The forecasted maximum is more comparable to September's typical high of 68.2°F than the average for October. The night temperature will be alike with the standard October low of 32.7°F.
The temperature will vary between a minimum of 39.2°F and a maximum of 60.8°F. The warmest part of the day will be at 4 pm and 5 pm.
The forecasted maximum is more comparable to September's typical high of 68.2°F than the average for October. The night temperature will be alike with the standard October low of 32.7°F.
Updated: Oct 17, 2026 @ 13:42:13 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
On Sunday, sunny intervals will be long-lasting, with few disruptions.
Tomorrow, the highest temperature will be 62.6°F, while the lowest temperature will be 35.6°F.
The maximum temperature tomorrow will be uncommonly higher than the average highest temperature of 51.3°F in October. The lowest temperature tomorrow will be in line with the average low temperature.
The maximum temperature tomorrow will be uncommonly higher than the average highest temperature of 51.3°F in October. The lowest temperature tomorrow will be in line with the average low temperature.
On Sunday, in Helena, sunrise will be at 7:50 am and sunset at 6:36 pm (MDT).
Tomorrow, the daylight will last for 10h and 46min.
