Weather forecast for tomorrowSpearfish, SD
Weather forecast for tomorrow
Monday Oct 19, 2026
- 70°F
- 48°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 11mphESE 117°
- Humidity: 37%
- UV index: 3
- Sunrise: 7:16 am MDT
- Sunset: 6:04 pm MDT
- details ▼
Tomorrow, clear and sunny conditions are also expected.
The temperature will fluctuate from a high of an agreeable 69.8°F to a low of a chilly 48.2°F.
Temperatures are trending warmer, with a peak resembling September's average maximum rather than October's seasonal high.
Sunrise will be at 7:16 am and sunset at 6:04 pm; tomorrow's daylight will last for 10h and 49min.
The temperature will fluctuate from a high of an agreeable 69.8°F to a low of a chilly 48.2°F.
Temperatures are trending warmer, with a peak resembling September's average maximum rather than October's seasonal high.
Sunrise will be at 7:16 am and sunset at 6:04 pm; tomorrow's daylight will last for 10h and 49min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 68°C.
Coldest hour: 6 am 43°C.
Coldest hour: 6 am 43°C.
Chance of precipitation
Highest chance: 1%.
Hourly weather forecast
- 12 am
- 48°F
- Feels like:43°F
Mostly Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphSE 140°
- Humidity: 46%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 45°F
- Feels like:43°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphSSE 155°
- Humidity: 50%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 45°F
- Feels like:41°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphSSE 166°
- Humidity: 52%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 43°F
- Feels like:39°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphSSE 154°
- Humidity: 59%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:16 am
- 8 am
- 45°F
- Feels like:43°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphSE 143°
- Humidity: 59%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 57°F
- Feels like:57°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphESE 105°
- Humidity: 35%
- Pressure: 30.09"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 12 pm
- 66°F
- Feels like:66°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphESE 103°
- Humidity: 28%
- Pressure: 30.03"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 2 pm
- 68°F
- Feels like:68°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 8mphESE 110°
- Humidity: 28%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 66°F
- Feels like:66°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 11mphESE 108°
- Humidity: 30%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 61°F
- Feels like:59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphESE 120°
- Humidity: 37%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:04 pm
- 8 pm
- 54°F
- Feels like:52°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphSSE 165°
- Humidity: 48%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 52°F
- Feels like:50°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphS 186°
- Humidity: 49%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Monday, a cloudless sky and mainly sunshiny weather are expected.
The temperature will vary between a minimum of 41°F and a maximum of 68°F. The warmest part of the day will be at 2 pm and 3 pm.
The maximum temperature will align more closely with September's average high of 72.5°F than with October's 54.5°F. The expected low will be also more comparable to what’s typical in September than in October.
The temperature will vary between a minimum of 41°F and a maximum of 68°F. The warmest part of the day will be at 2 pm and 3 pm.
The maximum temperature will align more closely with September's average high of 72.5°F than with October's 54.5°F. The expected low will be also more comparable to what’s typical in September than in October.
Updated: Oct 18, 2026 @ 08:18:31 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 Monday, sunshine and minimal clouds are in the outlook.
Tomorrow, the highest temperature will be 69.8°F, while the lowest temperature will be 48.2°F.
The maximum temperature will be uncommonly higher than the average highest temperature of 54.5°F in October. The lowest temperature will be also noticeably higher than the average low of 38.3°F.
The maximum temperature will be uncommonly higher than the average highest temperature of 54.5°F in October. The lowest temperature will be also noticeably higher than the average low of 38.3°F.
On Monday, in Spearfish, sunrise will be at 7:16 am and sunset at 6:04 pm (MDT).
Tomorrow, the daylight will last for 10h and 49min.
